1. chemistry help

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants? 2Na(s)+Br2(g) ---->2NaBr(s) 1. 2mol Na, 2mol Br2 2. 1.8mol Na, 1.4mol Br2 3. 2.5mol Na, 1mol Br2 4. 12.6mol Na, 6.9 mol Br2

2. science

the neuron that transmit the signal to your foot to kick a soccer ball are called reflexes motor neurons sensory neurons interneurons

3. Statistics 2

In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20

4. physics

A book of mass 7 kg rests on a plank. You tilt one end of the plank and slowly increase the angle of the tilt. The coefficient of static friction between the book and the plank is 0.40. What is the maximum angle of tilt for which the book will remain

5. language arts

From reading “The Raven and the First Men: The Beginnings of the Haida,” the reader can tell that the Haida people value family due to the actions of A.the baby toward the daughter. B.the Sky Chief toward Raven. C.Raven toward the Sky Chief. D.the

6. algebra. help!

Is 4x-3=19 true, false, or open? Which of the following is a solution to the equation 16=4x-4? a. -5 b. -4 c. 5 d. 16

7. Chem

16.3 L N2 at 25 °C and 125 kPa and 40.7 L O2 at 25 °C and 125 kPa were transferred to a tank with a volume of 5.50 L. What is the total pressure at 45 °C?

Describe a real-world situation that is modeled by multiplying two fractions or mixed numbers. Can someone give me an example?

9. "At Harvesttime" by Maya Angelou (ASAP!)

1. In "At Harvesttime," what does Angelou propose is a life principle that cannot be changed? A: In “At Harvesttime,” Angelou proposes that baring the consequences of a person’s actions is a life principle that cannot be changed. 2. How does she

10. Algebra 2

There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that is not covered by the circle? Possible answers: 4x(5) other person's answer 8x2(5

11. statistics 2

In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20

12. Science! Help!!

In pea plants, purple flowers are dominant over white flowers. Which Punnet square correctly shows the cross of a plant with white flowers and a plant that is heterozygous for purple flowers? A. Aa,Aa, aa, aa B. Aa,Aa, Aa,Aa C. AA,Aa, Aa,aa D. AA,AA, Aa,Aa

13. science

the neuron that transmit the signal to your foot to kick a soccer ball are called reflexes motor neurons sensory neurons interneurons

14. Chemistry

The solubility of acetanilide in your recrystallizing solvent is 5.0 mg per mL at 10 degrees Celsius. Calculate the maximum percent recovery in this experiment, assuming a 15.0 mL recrystallizing solution is filtered at 10 degrees Celsius.

15. chemistry

How many grams of chlorine gas are needed to make 5.10 × 106 g of a solution that is 1.50 ppm chlorine by mass?

16. Statistics 7

Home values tend to increase over time under normal conditions, but the recession of 2008 and 2009 has reportedly caused the sales price of existing homes to fall nationwide (BusinessWeek, March 9, 2009). You would like to see if the data support this

17. British Literature

I have to write a compare and contrast essay of the characterization of Sir Gawain and The Wanderer and I can't really find a difference between the two characters. I've found many ways I can compare the characters, but no differences. I need help finding

How is manifest destiny important to our past and future? How is it important? I don't really get what manifest destiny is... all we did in class is read O'Sullivans document called Manifest Destiny

19. Chem 132

If the density of a 40.0 mass % solution of ethylene glycol in water is 1.0514g/mL at 20 celcius what is the molarity

A box of mass m = 6kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One piece, with mass m1 = 2kg moves in the same direction with speed v1 = 8m/s. Find the velocity of the second piece. Its answer is 2 m/s

21. Science

Dust mites are microscopic bugs that are too small to see with a dissecting microscope. To see the details of a dust mite’s skin, which of the following microscopes would you use? A. dissecting microscope B. compound microscope C. transmission electron

22. math

In a football game, a touchdown with an extra point is worth 7 points and a field goal is worth 3 points. Suppose that in a game the only scoring done by teams are touchdowns with extra points and field goals. A: Which of the scores 1 to 25 are impossible

23. calc 3

Find parametric equations for the tangent line to the curve of intersection of the paraboloid z = x2 + y2 and the ellipsoid 7x2 + 2y2 + 6z2 = 33 at the point (−1, 1, 2). (Enter your answer as a comma-separated list of equations. Let x, y, and z be in

24. Language Arts

What final events in "The Finish of Patsy Barnes" and "The Drummer Boy of Shiloh" enable Patsy and Joby to change? A. Wearing maroon and green; beating his drum. B. Riding Black Boy to win the race; encouragement by the general. C. Meeting Mr. Brackett;

25. math

a recipe for 50 banana cookies uses 1 1/2 pounds of bananas. How many pounds of bananas would you need if you wanted to make 75 banana cookies? 1 1/2 divided by 50 and I looked at a measuring and came up with 2 1/4 but don't know how to show how I got that

26. Plz Hellp

Wanda took out a personal loan for \$16,000 at 9% simple interest. How much interest will she pay after 5 years? Suppose she pays off the loan in 3 years instead of 5 years. How much money will she save in interest?

27. Math

A full 355 mL can of Coke is leaking at a rate of 5mL per minute into an empty can. How long will it take for the two cans to have the same amount m of Coke? Is the equation 335+5m= something? I'm not sure

28. chemistry

6 small glass beads are found to weigh 9.34 g. The beads are placed in a graduated cylinder filled with ethyl alcohol (density 0.78 g/mL). The reading of the liquid in the cylinder before the beads were added is 21.5 mL. After the beads sink to the bottom

29. Algebra

Wanda took out a personal loan for \$16,000 at 9% simple interest. How much interest will she pay after 5 years? Suppose she pays off the loan in 3 years instead of 5 years. How much money will she save in interest?

am studyng Grade11 and am confused,I feel i want to study Tourism and hopefully make it my career but i also want a career that includes all my subjects not to pick from one them.What should i study after grade12?Help please

31. language arts

Identify the complete adjective clause. The car I drive has 50,000 miles on the odometer.

32. Physics

The biggest stuffed animal in the world is a snake 420 m long, constructed by Norwegian children. Suppose the snake is laid out in a park as shown in the figure below, forming two straight sides of a 114° angle, with one side 220 m long. Olaf and Inge run

33. Science

smallest unit that consists of at least one atom A. Protons B. Neutrons C. Electrons D. Molecules Im thinking D but im not sure i don't remember.

34. statistics 3

An airline promotion to business travelers is based on the assumption that no more than two-thirds of business travelers use a laptop computer on overnight business trips. 1. What is the sample proportion from an American Express-sponsored survey that

35. Physics

a child slides down a slide with 26 degrees inclined and at the bottom her speed is 1/4 of what it would have been frictionless. Calculate the coefficient of kinetic fiction between the slide and the child?

36. Physics 103

You're squeezing a springy rubber ball in your hand. If you push inward on it with a force of 1 N, it dents inward 2 mm. How far must you dent it before it pushes outward with a force of 3 N?

37. Statistics 1

A study found that, in 2005, 12.5% of U.S. workers belonged to unions (The Wall Street Journal, January 21, 2006). Suppose a sample of 400 U.S. workers is collected in 2006 to determine whether union efforts to organize have increased union membership.

38. Oliver Springs

Please help,Math,Problem;John and George together raked 7/8 of the yard. John raked 3/4 of that amount. What part of the yard did John rake?

39. chemistry

what mass of silver chloride can be prepared by the reaction of 100 ml 0,20 M of silver nitrate with 100,0 ml of 0.15 M calcium chloride calculate the concentration of each ion reamaining in solution after the precipitation is complete

40. statistics 7

Home values tend to increase over time under normal conditions, but the recession of 2008 and 2009 has reportedly caused the sales price of existing homes to fall nationwide (BusinessWeek, March 9, 2009). You would like to see if the data support this

41. chemistry

The reaction of 9.58 g of Carbon with excess O2 yields 8.90 g of CO2, what is the percent yield of this reaction?

42. Statistics 3

An airline promotion to business travelers is based on the assumption that no more than two-thirds of business travelers use a laptop computer on overnight business trips. 1. What is the sample proportion from an American Express-sponsored survey that

I am back AGAIN. 1. Guilds did all of the following except a. vote on religious issues that affected trade. b. set prices and prevented outsiders from selling goods in town. c. set standards for the quality of their goods. d. pay dues that helped support

44. math

Suppose your teacher tells you to write a word problem using the number 3. Which would be the best object to use in your problem? Explain. Then write and solve a word problem using that object. (tricycle, bike, wagon)

45. Pre-Calculus

Help please, am i correct? The border line of the linear inequality 4x-2y < 1 is solid. True False

46. Chemistry

If a sample of silver carbonate contains 1.75 grams of silver [Ag] atoms, calculate the mass (in grams) it contains of oxygen atoms [O].

47. HISTORY

1. What was thee one product that the salzburgers had some success with in Georgia that other settlers did not? A. Squash B. Rice C. Corn D. Silk ***** 2. which of the following actions of the trustees did the malcontents dislike? A. Women were not allowed

48. Language Arts

What is similar about Patsy in "The Finish of Patsy Barnes" and Joby in "The Drummer Boy of Shiloh"? A. Both are affected by their surroundings. B. Both are from Little Africa. C. Both are fighting a war. D. Both are static characteristics. Is the answer

49. Math

jason mixed 3/8 cup of sugar with 1 5/6 cups of water. how many more cups of water than sugar did he use in his mixture?

50. Physics

The biggest stuffed animal in the world is a snake 420 m long, constructed by Norwegian children. Suppose the snake is laid out in a park as shown in the figure below, forming two straight sides of a 114° angle, with one side 220 m long. Olaf and Inge run

51. Chemistry

Four isotopes of Lead occur naturally: 204Pb (mass = 203.973037 amu) 206Pb (mass = 205.974455 amu) 207Pb (mass = 206.975885 amu) 208Pb (mass = 207.976641 amu) If the percent abundance of 204Pb and 208Pb are 1.400 and 52.40, respectively, what is the

52. math

At the city museum, child admission is \$5.40 and adult admission is \$8.70 . On Thursday, three times as many adult tickets as child tickets were sold, for a total sales of \$693.00 . How many child tickets were sold that day?

53. Chemistry

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 400mL of a solution that has a concentration of Na+ ions of 1.10M ?

You drop a water balloon on your friend’s head from the third-story window of your apartment building, 15.0 m from the ground. What is the water balloon’s acceleration while it is in the air? • How much time does it take for the water balloon to

55. ap chemistry

what mass of barium sulfate can be produced when 100 ml 0.100 M of solution of barium chloride is mixed with 100.0 ml of a 0.100 M solution of Iron (III) sulfate

56. English

The 'White House' has been home to many animals as well as presidents. (1 point) common noun proper noun compound noun collective noun

57. math

If tany(1+tanx)=1-tanx, show that dy/dx=-1

58. chemistry

A mothball, composed of naphthalene (C10H8), has a mass of 1.10g

59. Statics

I have a structure that is constructed of circular rod that has a mass of 7 kg per meter of length. I must determine the moment Mo about O caused by the weight of the structure. From the origin (O), the structure is 2m tall (z direction), branches outward

60. math

The base of a triangular prism is a right triangle whose legs are 7cm and 24 cm. The height of the prism is 30cm. What is lateral area of prism?

61. Physics

A proton with a kinetic energy of 4.7×10−16J moves perpendicular to a magnetic field of 0.25T .

62. math

In class of 24 students, 13 students sold over 150 raffle tikets each, and the rest of the class sold about 60 tikets each. the class goal was to sell 2,000 tikets. did they rach their goal?

63. oklahoma history

After the signing of the Treaty of Paris in 1763, France gave __________ to __________.

64. Calculus

The following table shows the percentage of the U.S. Discretionary Budget allocated to education in 2003, 2005, and 2009 (t=0 represents 2000) Year t 3 5 9 Percentage p(t) 6.8 7 6.2 (a) Compute and interpret the average rate of change of P(t) (b) Over the

65. statistics 1

A study found that, in 2005, 12.5% of U.S. workers belonged to unions (The Wall Street Journal, January 21, 2006). Suppose a sample of 400 U.S. workers is collected in 2006 to determine whether union efforts to organize have increased union membership.

66. algebra

If you walk 3/4 mile and then jog 2/5 mile, what is the total distance covered?

67. chemistry

A helium balloon contains 0.30g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?

68. math

Player B's longest home run distance is 500 ft. There are 5,280 ft in 1 mi.How many home runs would Player B need to hit at his longest distance for the total to be greater than 1 mi?

69. Statistics

An ESP experiment is conducted by a psychologist. For part of the experiment, the psychologist takes 10 cards numbered 1-10 and shuffles them. Then she looks at the cards one at a time. While she looks at each card, the subject writes down the number he

70. statistics

The average price of a gallon of unleaded regular gasoline was reported to be \$2.34 in Northern Kentucky use this price as a population mean population standard deviation is \$.20. question. what is the probability that the mean price for a sample of 30

71. math

Am confused. The bases of a prism are right triangles with side lengths 6 meters, 8 meters, and 10 meters. The height of the prism is 3 meters. What is the lateral area of the prism? What is the total surface area? L=Ph perimeter is side(1)

72. Algebra

There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that is not covered by the circle? I keep coming up with 4x(5)but I don't think that is

73. Chemistry

A 45kg sample of water absorbs 349kJ of heat. If the water was initially at 25.5 degrees Celsius, what is its final temperature?

74. physics

A cat is being chased by a dog. Both are running in a straight line at constant speeds. The cat has a head start of 3.6 m. The dog is running with a speed of 8.9 m/s and catches the cat after 6.9 s. How fast did the cat run?

75. physics

A basketball player achieves a hang time of 0.75 s in dunking the ball. What vertical height will he attain? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

76. Algebra

A coin collection contains 30 coins in nickels, dimes, and quarters. There are three more dimes than nickels. The value of the coins is 3.55. Find the number of quarters in the collection.

77. LA - pronouns

Which kind of pronouns are used in the following sentences? After staying up all night to read the complete works of Poe, Tyler managed to scare himself. reflexive intensive personal possessive I asked you if you'd given her the documents yet. reflexive

78. math

A cube with an edge length of 4 in is painted on all its sides. Then the cube is cut into 64 cubes with an edge length of 1 in. What percent of the total surface area is painted?

79. physics

A dog travels at a rate of 4m/s[S] in a train car that is moving 12m/s[N]. Find the dog's velocity relative to the ground.

80. Math

Kendra wants to purchase a bead necklace made of Jade. The cost depends on the amount of Jade in the necklace. Each bead is 7 mm in diameter and there are 100 beads in the necklace. What is the amount of Jade in the necklace in cubic centimeters? Please

81. Math

The weight w of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 miles from the center of the earth), an astronaut weighs 110 pounds. Find her weight when she is 139 miles above the surface of the

82. TO MS SUE

Please check my answers to my question, I posted this question before but no one answered or helped me. All I need is for someone to check my answers :)

83. science

The energy of a mole of photons with frequency 6.00x10^14Hz is what in kJ?

84. Math

1/4 of the roses in the garden are red, 1/3 of the remainder are yellow, and the rest are pink. There are 24 more pink roses than red roses, how many roses are there altogether?

85. English

fragments or run on sentences He's going to law school. To be an attorney like his mother Fragment She was the worst student in her class. Because she got all the lowest grades. Run on senence

86. Math

A conical paper cup is to have a height of 3 inches. Find the radius r of the cone that will result in a surface area of 6ðin^2.

87. Math-calculus

At a certain point on the beach, a post sticks out of the sand, it's top being 76 cm above the beach. The depth of the water at the post varies sinusoidally with time due to the motion of the tides. The depth d is modeled by the equation

88. MATH

Estimate the indicated derivative by any method y=1-x^2 ; estimate dy/dx , x=-1 I know I would use the f(x)= f(x+H)-(x)/h I am a bit overwhelmed with what to do next. Thanks John

89. ap chemistry

what volume of0.100 M NaPO4 is required to precipitate all the lead(II) ions from 150ml of 0.254 M Pb(NO3)2

90. physics

Two canoeists start paddling at the same time and head toward a small island in a lake. Canoeist 1 paddles with a speed of 1.40m/s at an angle of 45 degrees north of east. Canoeist 2 starts on the opposite shore of the lake, a distance of 1.5 km due east

91. Physics

Two cylindrical copper wires have the same mass and are at the same temperature. Wire A is twice as long as wire B. The resistance of wire A is related to that of wire B by : a) RA = RB/4 b) RA = RB/2 c) RA = RB d) RA = 2RB e) RA = 4RB

92. CHEMISTRY

The solubility of NaNO3 at 40 oC is 102 g/100 g H2O , what is the minimum amount of water to dissolve NaNO3 ( mass of solvent ) ?

93. math

A class is. Planning. A. Party. A pizza restaurant cuts. Each. Pizza. Into 8. Slices there are 32 students how many. Pizzas. Does the. Class. Need to. Order. For each. Student to have a slice explain please

94. Math--Teach me?

Use the order of operations to simplify the expression. 2[4(9 – 7) + 1] ÷ 3 Can someone show me how to do this?

95. math

Player A's longest home run distance is 484 ft.if player A hits 45 home runs at his longest distance,what would the total distance be ?

96. physics

What is the moment of inertia of a triangular plate ABC of mass M and side BC=a about an axis passing through A and perpendicular to the plane of the plate.

97. ap chemistry

what volume 0,100M of Na2PO4 is required to precipatate all the lead(II) ions from 150 ml of 0.250M Pb(NO3)2

98. Examination Number

. Among instances of corporate malfeasance in the early twenty-first century, the _______ scandal was the most shocking and economically damaging for employees and shareholders

99. physics

A flatbed truck is supported by its four drive wheels, and is moving with an acceleration of 7.4 m/s2. For what value of the coefficient of static friction between the truck bed and a cabinet will the cabinet slip along the bed surface?

100. Physics

Two cylindrical copper wires have the same mass and are at the same temperature. Wire A is twice as long as wire B. The resistance of wire A is related to that of wire B by a) RA = RB/4 b) RA = RB/2 c) RA = RB d) RA = 2RB e) RA = 4RB

101. math

For every girl taking classes at a Martin martial arts school there are 3 boys who are taking classes at the school. If there a 236 students taking the classes write and solve a proportion to predict the number of boys taking classes at the school?

102. Algebra

I am having a hard time getting the right answer for this problem. Two people disagree. Please help... There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the

103. Math question? Only 1.

Use the order of operations to simplify the expression. –18 + (–4) + 20 + (–3) I know the answer is -5. Care to show me how to do it step by step, please?

104. physics

A hot-air balloon is rising upward with a constant speed of 2.35 m/s. When the balloon is 2.50 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

105. Organic Chemistry

The solubility of compound A in ethanol is 0.5 g per 100 mL at 0oC and 5.0 g per 100 mL at 78oC. (a) To make a hot, saturated solution of 15.0 g of A at 78oC, how much ethanol is required? (b) When the solution prepared in is cooled to 0oC, how much of

106. Chemistry

Assume that the width of your body (across your shoulders) is 50.8 cm inches and the depth of your body (chest to back) is 25.0 cm. If the atmospheric pressure is 14.9lb/in^2, what mass of air (lb) does your body support when you are in an upright

107. History

What are some similarities in the origins of Islam and Christianity?

108. physic

calculate the electric force between the two charged particles q1=4c and q2=6c the distance between these charges is 9 m

109. Math

the angles are adjacent and form an angle measuring 140 degrees. the measure of the smaller is 28 degrees less than the measure of the larger.

110. Chemistry

In lab, we were finding the distribution coefficient for propanoic acid and ethyl acetate. As well as propanoic acid and toluene. How would you write the chemical equation for the reaction of propanoic acid and ethyl acetate? I know it produces water in

111. chemistry

An alka-seltzer tablet weighing 3 grams is added to a flask of water (weighing 250 grams).At the end of the experiment, the flask weighs a total of 249.6 grams.Explain why this experiment does not seem to follow the Law of Conservation of Mass and how the

112. physics

An airplane with a speed of 53.8 m/s is climbing upward at an angle of 42° with respect to the horizontal. When the plane's altitude is 840 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly

113. Urgent english help

I'm writing an English persuasive essay and I'm wanting to put a quote from a person as the thesis. How would I quote it? Do I quote it then put the name of person in parentheses? Please help me thanks!

114. Maths

the ratio of the number of boys to the number of girls in a class is 4:7. if there are 12 more girls than boys, find the total number of pupils in the class.

115. physics

A soccer ball rolling across a field with an acceleration of -0.5m/s/s rolls 12.5 m and then comes to a stop after 8 seconds. What was the ball's initial speed?

116. Physics

One object is thrown straight up at 54.9 m/s from the ground at the base of a building with is 157.9 meters tall. At the same time the object is thrown up at the bottom of the building, another object is thrown straight down at the top of the building. If

117. Physics

A car is moving with a velocity of 10.1m/s [N] while on a ferry that is moving across a lake. If an observer on a shore measures the velocity of the car to be 29.0m/s [N] how quickly is the ferry moving?

118. Grammar

Rewrite each of these sentences, correcting any errors in subject-verb agreement. If the subject and verb, write Correct. 1. No one of Columbus' sailors are in good health. A: Correct? 2. Neither success nor victory comfort the dying soldier. A: Neither

119. math

It is 7 digit even number.There is no repetition of digits. The digit 5 is in thousands place. The greatest digit is in thee millions place. the digit in the hundred thousandsplace twice the digit in the hundreds place.The digit in the thousands place is

120. Brown Mackie College

At the end of the fiscal year, what accounts are debited and credited to record the division of net income among partners?

121. Pharmacy Calculations

You are given a compound which calls for combining 30 grams of 2.5% hydrocortisone cream with 15 grams of zinc oxide. What is the ratio of the hydrocortisone cream to the total amount of the compound?

Identify the word that best describes the underlined word which for this sentence is "the shelter" The volunteers provided the shelter with new crates, beds, and bowls for the dogs. 1.direct object ****** 2.indirect object 3.predicate nominative

123. social studies

True or false The ancient Egyptians were monotheistic;they believed in only one god.

124. Math

At one store a trophy costs 12.50 dollars and engraving cost 0.40 cents. At another store the same trophy costs 14.75 dollar and engraving costs 0.25 cents. How many letters, e must be engraved for the costs to be the same? 15 letters What will the cost of

Choose the word phrase that can be represented by 2 – p. the difference of a number p and 2 the quotient of 2 and a number p 2 more than a number p 2 decreased by a number p **** Which word phrase could represent the variable expression 1/2 a + 4? 4 more

Decide whether the lines in each pair are parallel , perpendicular, or neither. Justify your answers: A.) m=3/4 m=12/16 B.) m=100 m=0.01 C.) m=10 m= -0.1 My answers: A.) parallel because they both equal to 0.75 B.) neither because they aren't the same and

127. Physics

A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.

128. math

How do you study for a math quiz?

129. math

a rectangular pen is divided into 6 rectangular strips by fences running parallel to the width of the pen. if 420m of fencing are available, determine the dimensions that give the maximum area possible.

130. Physics

If the acceleration of this block is 5m/s/s, what is the coiefficient of kinetic friction? 20kg at 60 degrees. _ _ _ _ -------------60 degrees

131. Math 112

A student asks why "congruent" rather than "equal" is used to discuss triangles that have the same size and shape. What do you say?

132. conceptual physics

you are in a plane traveling due North at 325 km/hr. The plane encounters a headwind (South) wind of 50 km/hr. What is the resultant velocity of the plane?

133. math-pre calc

On a drive from your home to town, you wish to average 48 mph. The distance from your home to town is 106 miles. However, at 53 miles (half way), you find you have averaged only 36 mph. What average speed must you maintain in the remaining distance in

134. Algebra

The power P (in watts) generated by a windmill that has efficiency E is given by the formula P = 0.31ED^2V^3, where D is the diameter (in feet) of the windmill blades and V is the wind velocity (in ft/sec). Approximate the wind velocity necessary to

135. algebra. help!

is -7+9=-9+7 true false or open

136. math

An art student wants to make a model of the classroom. The length of the classroom is 2.4 times its width. The length of the students model is 42 in. What should the width of the model be? a. 17.5 in b. 20.5 in c. 83.6 in d. 100.8 in Use mental math to

137. math

let the two angles e represented by 'a' and 'b'. obtain two equations for each case, and then find the angles. the angles are adjacent and form an angle measuring 75 degrees. their difference is 21 degrees.

138. Math

Write a real world description to fit the expression -50 divided by 5.

139. maths

gemma saved £100 to spend on some clothes. she spent 2/5 of her money on one shot. how much money does she have left?

What type(s) of chromatography is/are most appropriate for solids? Explain ----Liquid-Solid Chromatography ----Thin-Layer Chromatograph What type(s) of chromatography is/are most appropriate for liquids? Explain ----High performance liquid chromatograpy

141. Chemistry molar heat of fusion

A styrofoam cup with a mass of 2.97g has 81.68g of hot water at60.0 •C has ice added to it untill it reaches a temrature of 7.0•C and weights 141.12g. What is the molar heat lost by the water to melt the ice. Equation: -(mcdeltaT)=(deltaHn)+(mcdeltaT)

142. Algebra II Honors

There are some interesting special cases in which the graphs turn out to be parallel, perpendicular, or coincident with the coordinate planes or axes. Sketch a graph of each of the following equations by drawing their traces as in Problem 1. Then tell what

143. calculus

Find the interval [a, b] on which the function f(x) = 2 x3+3 x2−12 x+3 is decreasing. Enter your answer as: [a, b] for some constants a, b.

144. Pre-Calculus

help please Identify the slope and intercept of the following linear equation. y=3/7x-5 Slope: 3/7; intercept: 5 Slope: -5; intercept: 3/7 Slope: 5; intercept: 3/7 Slope: 3/7; intercept: -5

145. Physics 103

Your new designer chair has an S-shaped tubular metal frame that behaves just like a spring with the spring constant 13000 N/m. When your friend, who weighs 940 N, sits on the chair, how far does it bend?

146. physics

A bullet is fired straight up from a gun with a muzzle velocity of 225 m/s. Neglecting air resistance, what will be its displacement after 6.1 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

147. math

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7.

148. Pre-Calculus

Help please What is the slope of the line x = 4? would it be undefined??

149. African History

what is the controversy concerning the racial identity of the ancient Egyptians. What is the significance of this controversy for the history of African Americans? .

150. English/language arts

What is the complete subject in the sentence That orange deposit on the outside surface is called rust.

151. Physics

A body of mass 20 kg moving with a velocity of 80 m/s collied with another body mass of 5 kg moving with a velocity of 50 m/s. If they move together after colision. Find common velocity.

152. math

assembly line worker at robs bicycle factory at the sea to bicycle at a rate of 2 seats in 11 minutes. Write a proportion relating to the number of seats s to the number of minutes m at this rate how long will it take to add 16 seats? 19 seats?

153. Algebra Based - Physics Help Please!!!!

a) In 1897, Madeline Boardman won the long-drive contest during the U.S. Women's Amateur Golf Tournament. Her winning drive was 125 m. if the ball was hit off the tee at a 45 degree angle, what did the magnitude of its initial velocity have to be for her

154. Pre-Calculus

help please in what form is the following linear equation written: 3x-2y=4 Slope-intercept Point-slope Standard Rise-run

155. Biology

During transcription, when RNA nucleotides form base pairs with the DNA template, does this mean that RNA nucleotides and DNA nucleotides pair up?

156. Biology

How are RNA bases freed up during transcription to form base pairs?

157. Math-- 1 question

Use the order of operations to simplify the expression. 2[4(9 – 7) + 1] ÷ 3 I know the answer is 6.

158. History

Which was the main region where Christianity spread to in its early days? Is this Europe?

159. CHEMISTRY

How to determine direction of polarity? For instance im studying from a practice quiz, an it says that in CH3OH the oxygen is slightly negative, which is understandable as its next to F. but then it says the H is slightly positive. why the H and not the

160. Calculus

At what point does the normal to y=-5-1x+3x^2 at (1, -3 ) intersect the parabola a second time? Answer: Note: You should enter a cartesian coordinate. The normal line is perpendicular to the tangent line. If two lines are perpendicular their slopes are

161. Physics

A quarterback is trying to throw a football to a stationary receiver. The receiver is not directly in front of him, so the total velocity of the ball and the velocity of the quarterback has to be 20 m/s at an angle of 21.4 degrees from the vertical

162. History

How many main sects are in Christianity? I know that "main" can be interpreted differently, but I want a reasonable number so I get the idea.

163. math

write an expression using n as the variable for this problem. each day julia rides her bike to and from work. she lives 9 blocks from work and burns 13 cal. per block. how many cal. does she burn in n days

164. SocialStudies

how would you help someone to locate jamaica by including information on nearly water bodies and land masses direction , it longitude and latitude?

165. Math

A souvenir consisting of a cube with an inserted sphere is made to represent Earth. Both pieces are made out of solid crystal. The sphere replaces one quarter of the volume of the cube. Calculate the volume of the souvenir piece. The sphere has diameter of

166. SAT Math

A student states that for any positive integer n is the sum of n successive integers is always divisible by n. Which of the following can be used to disprove the student's statement? Please provide answer and how you got it! A) 1+2=3 B) 1+2+3=2x3 C)

167. math

type an expression using n as the variable for this problem. Afamily is having turkey for dinner. There are 52 cal. in each slice. One serving is 3 slices. How many caloties do n people consume if each person has 2 servings?

168. Metric Spaces Proof

d(x,y)={ 1 if x does not equal y 0 if x=y Prove that d satisfies the axioms of a metric. clearly it satisfies d(x,y) existing in the reals, and d(x,y)>=0 and d(x,y)=0 iff x=y. why I don't know is triangle inequality and d(x,y)=d(y,x).

169. Chemistry

Three isotopes of Argon occur naturally: 36Ar (mass = 35.9675 amu) 38Ar (mass = 37.9627 amu) 40Ar (mass = 39.9624 amu) If the percent abundance of 36Ar is 0.3400, what is the percent abundance of 40Ar?

170. Math

Differentiate and simplify (11x)(sqrt10x-5) I think you use the Product rule but square roots confuse me with it being 1/2

171. Algebra

The changes in the price of a certain stock each day from Monday to Thursday of one week were -\$2.25, +\$0.50, +\$1.50, and +\$0.75. If the overall change in the stock price for the week was -\$0.50, write an equation that can be used to find the change in the

172. Physics of Modern Technology

1) In a conventional explosion, when each molecule of high explosive chemically reacts, it produces about 4 x 10-18 J (joules) of energy. If each molecule of high explosive weighs as much as a single uranium 235 atom, and each uranium atom releases about 4

173. Chem

Dear Dr., What formula is this? En = -Z^2RH/n^2 I saw you use it in one of your explanations. I know its been a few yrs since u last posted it. Pls help thanks! Yours sincerely, Johan

174. Algebra

please explain and show step to this factoring problem 9w - w3 and 3h2 the 2 power + 1+3a this really makes no sense to me HELP

175. trig

karen, (who is 1,6m tall) wishes to calculate the height of a tall tree. she stands 50m from the base of the tree and measures its angle of elevation to be 36 degrees. determine the height of the tree?

176. History

How did Jesus begin his teachings on love, ethics, etc?

177. language

I have to do a précis on a book that was published in the 1940-1969 what book would you recommend.

178. Math

Bricks have a mass of 1.75kg each. How many bricks are there in 5wholenumber 1/4 tonnes

179. math

It is equally probable that stock A will have a +10% or -10% rate of return The only other possibility is that it will return 0%.The probability of 0% is twice that for a return of +10%. What is the expected return and Standard deviation of the return for

180. Physics

If a 6.0keV photon scatters from a fee proton at rest, what is the change in the photon's wavelength if the photon recoils at 90 degrees?

181. Maths

Please help me, Wendy went to a bakery to buy cakes and doughnuts. She spent \$14 altogether on 30 cakes and doughnuts. Each cake cost 40 cents and each doughnut cost 50 cents. How many cakes and doughnuts did she buy?

182. Chemistry

Find the mass (in g) of Carbon in 2.980 g Carbon dioxide.

183. Personal Finance

Claire earned \$9000 in a 15 month CD that pays an annual 8.67% . How much did Claire earn with this? Could you show me the steps to the answer

184. Math 112

On a test, a student wrote A B ~= C D instead of A B ~= C D. Is this answer correct? Why

185. geography

ATTENTION!! Iwant the answer of the question RIGHT NOW!! so can anyone answer the question and I'll be waiting for it. Q:1 What do you need in the study of Geography?

186. math

Z=square root of (x^2+y^2) + xy Find the partial derivatives: x, xx, y, yy, xy. Thanks.

187. Math-2 questions

Write a numerical expression to represent the following: Margot took \$45 with her to the amusement park. She spent \$20 on lunch and spent \$5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) +

188. English

Which would be grammatically correct: We both had a goal and objective in mind to get our jobs done. or We both had a goal and objective in mind to get the job done. Thanks!

189. algebra

I invest a sum of money at 10% annual simple rate and twice that amount at 12% annual simple interest.My total yearly in come from both investment was \$2890,how much was invested at each rate? Also What is the speed of each train if one train travels 8 mph

190. physics

Your friend is an environmentalist who is living in a tree for the summer. You are helping provide her with food, and you do so by throwing small packages up to her tree house. If her tree house is 27 m above the ground, what is the minimum (initial) speed

191. physics

if a ball is thrown horizontally from the top of a cliff and takes 3 seconds to reach the beach below. calculate the height of the cliff by considering the vertical motion only. answer : s=ut+half at(square) s=0*3+half*10*3 s=3+45 s=48 m/s(square)

192. Pre-Calc

A quadratic function has its vertex at the point (-5,-2). The function passes through the point (-8,-10). Find the quadratic and linear coefficients and the constant term of the function.

Write a numerical expression to represent the following: Margot took \$45 with her to the amusement park. She spent \$20 on lunch and spent \$5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) +

194. History

What are some differences in the way Islam and Christianity spread? Like the strategies they used?

195. Math

This year, Ms. Nelson's class has 20 students. Which of the following statements must be true? I. This year at least two of these students have their birthdays on a Sunday. II. This year at least two of these students have their birthdays on the same day

196. Algebra

A class of 23 students was using square tiles to build rectangular shapes. Each student had more than 1 tile and each had a different number of tiles. Each student was able to build only one shape of rectangle. All tiles had to be used to build a rectangle

197. Math

A student states that for any positive integer n the sum of n successive integers is always divisible by n. Which of the following can be used to disprove the student's statements? A) 1+2=3 B) 1+2+3=2x3 C) 1+2+3+4+5=3x5 D) p+(p+1)+(p+2)=3(p+1)

198. physics

Points A, B, and C are at the corners of an equilateral triangle of side 9 m. Equal positive charges of 11 mu or micro CC are at A and B. (a) What is the potential at point C? how do I find the potential?

199. english

umm did anyone watch the documentary "Bowling for Columbine"?

200. Math

3sqrt(5x-6) + 2sqrt(7-x) = 13

201. D.L.Perez elem. School

Two different 6-digit numbers each have three 8's and three 7's.No two digits next to each other are the same.write the numbers in standard form.

202. Physics

Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.45 m/s, while the speed of the current is 2.0 m/s. If it takes the swimmer 160 s to cross the river, how wide is the river?

203. career math

Lauren baked bread rolls that were each about 11 centimeters in radius. About how many square centimeters was the area of each roll?

204. math

A rectangular prism has a length of 8 in and a width of 7 in. The lateral area is 150 square in. What is height of prism? Have no idea how to do this....please help

205. Math

Two different 6-digit numbers each have three 8's and and three 7's.No two digits next to each other are the same.write the numbers in standard form

206. Math

For how many values of n where n is a positive integer less than 10 is n+1/2 an integer? A) None B) One C) Three D) Four E) Five Please I would like some help explaining how to get the answer :)

Separation / Chromatography Lets assume I have three component mixture of liquids. And I wish to determine the quantity of each component present. I have reference samples of two of the components but the other component is not identified. How do I design

208. Algebra 2

Without graphing, identify the verx, axis of symmetry, and transformations from the parent function f(x)= absolute value of x y= 4- absolute value of x-2

Separation / Chromatography Lets assume I have three component mixture of liquids. And I wish to determine the quantity of each component present. I have reference samples of two of the components but the other component is not identified. How do I design

210. engineering measurment

A rotating search coil has 10 turns with a cross-sectional area of 5cm2. It rotates at constant speed of 100rpm. The output voltage is 80mV. Calculate magnetic field strength

211. algebra 2

Solve the following systems of equations. If the system cannot be solved ,state that it cannot be solved and explain why. 1.3x+y=7 3x+y=10 2. 5x-2y=-24 -4y=-48-10x

212. Diversity & world culture

I have to do an ethnographic study and its my first time. I have to do a naturalistic observation and evaluation paper. can you tell me how that is written or what it consist of? does it consist of title,intro,body,conclusion, and bibliography? Where does

213. CHEMISTRY

The solubility of LiCl is 83.5 g/100 g H2O at 20 oC , and is 89.8 g / 100 g H2O at 40 oC , then what is the required mass (in gram ) of LiCl to obtain a saturated solution in 300 g H2O at 25 oC ? please explain thank a lot

214. chemistry

if 5.105 gm of KHP (Mwt=204.2)was dissolved in 250 ml,10.70 ml of this solution of KHP was titrated with 10.0 ml of NaOH . Calculate the concentration of NaOH solution

215. Math

1/5 of the people in a village have been inoculated against measles. If 50 people have been inoculated, the number of people in the village is ?

216. Physics - Force

A high-speed maglev train is traveling with a changing velocity. what can be said about the forces acting on the train? Thanks!

217. physics

If a stone is attached with a string and oscillates in to and fro motion then if the string cuts when the stone is at its highest position then what will be the path of the stone to be travelled

218. History

What strategies were employed in the spread of Islam?

219. math

if angle A contains 1/2x and angle B contains 1/2(180-x) are the angles A and B supplementary, complementary, or neither

220. math

using comparative thinking which equations are true a.50+64=62+48 b.50+64=62+62 c.50+64=124+52 d.50+64=66+52

221. math

Jason took 3/4 of an hour to paint 27 1/3 square yards. How many square yards does he paint per hour?

222. Physics

White dwarf stars have been observed with a surface temperature as hot as 200,000 degree C. What is the wavelength of the maximum intensity produced by this star?

223. English

I'm writing an essay about stating my position on whether everyday people can be considered heroes. Can someone give me some ideas of what each paragraph should be about? Like how should I make it flow? Please help

224. Math

Sara cycled 11 miles from home to ranch in 1 1/2 hour. How many miles did she cycle per hour?

225. science urgnt vry urgnt for exam purpouse

explain why sliding friction is less than static friction

226. math

John can build 7 birdhouses in 5 hours, write an equation that will allow john to calculate the time it will take to build any given number of houses. HOW MANY HOUSES in 40 hours? #2 How long will it take to build 35 houses?

227. Algebra Help

How do I find the center of a circle using the points (2,8) (-4,6) (1,-1) I also found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the perpendicular bisector of the

228. Physics

You walk 1300m east and then 880m south in a total time of 16min . Compute your displacement. Enter the east and south components of the displacement separated by a comma. Compute your average velocity in m/s. Enter the east and south components of the

229. math

18.75 lbs = 5000 sq ft how much needed to cover 27000 sq ft

230. algebra

Jesse and Larry entered a pie eating contest. Jesse ate 5 less than twice as many pies as Larry. They ate a total of 16 pies. How many pies did each eat.

231. algebra 2

How do I graph 3x+y

232. science

what is function of the nucleons in a cell?

3 3/5 * 5/6 = 90/45 Do I have correct answer?

234. Math

Determine all values of k for which each pair of vectors is orthogonal. a) (1,2) and (k,k) b) (1,2,1) and (k,2k,4)

235. science

how much energy and joules are in bag of crisps?

237. algebra

midpoint (-5,-15) endpoint (-13,-8). find the other endpoint

238. Math

Convert 62 inches to yards, feet, inches? How do I do all three at once? Please help.

239. math

The domain and range of ln(4-x-y). Thanks.

240. Math

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

241. geometry

In order to properly design a heating system for a greenhouse, the volume of air in the building needs to be determined. Find the volume of air in the greenhouse below. The length of the building is 40 feet long, the width is 20 feet long, and it is 8 feet

242. Pre-Calculus

Help please Find the equation, in standard form, of the line passing through the points (2,-3) and (4,2). 5x-2y=16 y=5/2x+8 5x+2y=16 2x-3y=9

243. Geometry

Please help! I am so lost! The question is "R and S are complementary angles and U and V are also complementary angles. If R=y-2, S=2x+3, U=2x-y and V=x-1, find the values of x, y, R, S, U and V."

244. Physics

An object is launched at an angle of 24 degrees above the horizontal at a velocity of 33.7 m/s from the top of a building which is 110.8 meters above the ground. When the object lands on the ground, what is the horizontal displacement from the base of the

245. Math

Determine whether the given equation is a circle, a point, or a contradiction (no real graph). x^2 + y^2 - 2 x - 16 y + 52 = 0 . The equation is a . (Enter "circle", "point", or "contradiction" in the answer space without quotes.)

246. calculus

Z=square root of(x^2+y^2) + xy Find the partial derivatives: x, xx, y, yy, xy. Thanks.

247. Math

I have to make a real world problem using the greatest common factor of two numbers help me please.

asked by Isabella needs help now
248. Algebra

1.How do I find the center of a circle using the points (2,8) (-4,6) (1,-1) ? 2. The Radius of the circle? 3. Equation of circle THANKS!

249. Grammar

Sentence: I tried all of the natural remedies, such as dishwashing liquid, but the ants kept coming back. Is there a comma before "such as"

250. Math

What is the vertex of y=7(x+5)^2+4?

251. math

A certain pencil comes 4 in a package for \$.75. Find the cost of 24 pencils.

252. English

When a goal states a quantifiable indicator of its achievement such as a target date, it is:

253. Math

How many liters are in 4.371

How do i find the radius of a circle with the center (16/11,79/11)? Thanks

255. Math

which two square roots are used to estimate 47? I think its the square root of 49 and 36.

256. math

What is the domain and range of ln(4-x-y)

257. multiplying fractions

5/7 * 9/10 = 9/14 Should my answer be 45/70 or 9/14?

258. MATHS

Three fair coins are tossed at the same time. What is the probability that one of the coins will show heads and other two will show tails?

259. multiplying fractions

2/11 * 264 = 528/11 Is the answer correct?

260. Algebra

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

261. Finance

Paul's credit card closes on the 14th of the month and his payment is due on the 25th . If he purchases a \$300 stereo on the 18th , how many interest days will he have? I need the answer and how you answered it? Thank you so much!

262. Math Proof

On the real line, define d (x, y ) = sqrt(abs(x − y)) . Prove that d satisfies the axioms of a metric.

263. math

Raul is x years old now, and Phil is 8 years older than Raul. In 2 years, Phil will be exactly twice as old as Raul is then. How old is Raul now? A. 3 B. 5 C. 6 D. 8 E. 10

264. physics

Gravity is pulling downward on a 20.0kg block resting on a 15 degree incline. What is the magnitude of the force component parallel to the surface (hint: how to turn 20.0kg into force)?

265. algebra

A telemarketer claims that every call made to a customer costs at least \$2, if a call costs \$.50 plus \$.10 for each minute, how long does each call last

266. Algebra

x= 3 + sqrt(3x-5)

267. Math

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

268. Linear Algebra

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

269. English

what is the adverb clause in the sentence: Dad takes Ryan to the zoo every Wednesday, unless it is raining

270. Math

My answers will be posted 2! 1. Dimensions of the cube is 5x3x1 a. What is the surface area? ( i said 46ft squared ) b. What is the # of cubes? ( I said 15 ) 2. Dimensions are 5x3x2 a. Surface area? ( 62ft squared ) b. # of cubes? ( 30 ) 3. Dimensions are

271. math

if angle A contains 1/2x and angle B contains 1/2(180-x) are the angles A and B supplementary, complementary, or neither

272. Chm 203

On a size exclusion separation column (e.g. Sephadex) would you expect the longer or shorter chain length compound to be eluted first? Why? Explain? Thanx!

273. physics

A spacecraft is traveling with a velocity of v0x = 5690 m/s along the +x direction. Two engines are turned on for a time of 845 s. One engine gives the spacecraft an acceleration in the +x direction of ax = 1.35 m/s2, while the other gives it an

274. math

a recipe for 50 banana cookies uses 1 1/2 pounds of bananas. How many pounds of bananas would you need if you wanted to make 75 banana cookies?

275. math

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

276. Math

A cylinder has volume of 339.3cm^3 and height of 3cm. What is the radius? Please help! Can you show me the formula to use and the steps involved in getting the answer? Thank you for your time.

277. Math

Determine if correct or incorrect and justify yourself. n^3 = O(n^2 + n^3) The O is the big Oh notation.

278. Physics of Modern Technology

1) In a conventional explosion, when each molecule of high explosive chemically reacts, it produces about 4 x 10-18 J (joules) of energy. If each molecule of high explosive weighs as much as a single uranium 235 atom, and each uranium atom releases about 4

Decide whether the lines in each pair are parallel , perpendicular, or neither. Justify your answers: A.) m=3/4 m=12/16 B.) m=100 m=0.01 C.) m=10 m= -0.1 My answers: A.) parallel because they both equal to 0.75 B.) neither because they aren't the same and

280. logic

When a 3 people goes to a hotel, it is \$30. Later on, the owner had a promotion of \$25, and told them to give \$5 to the service worker but he took \$2 so they can keep \$3. Therefore, each person will have back \$1. Each person will have to pay \$27. Now after

281. math

Bijous I and II start their movies at 7:00 p.m. The movie Bijou I takes 75 min, while the movie Bijou II takes 90 min. If the shows run continuously, when will they start at the same time again?

282. Math

Patty wants to use at most 6 gallons of paint to cover her house and garage. The house takes 5 times as much paint as the garage. Which inequalit best represents the situation if g represents the amount of paint that can be used on the garage A. g+5g ≤ 6

283. Calculus I

Suppose that the number of bacteria in a plate of food is given by N(T)= 10T^2 - 40T + 200, -1

284. math

A glass prism on a chandelier is 75mm long. A base of the prism is an equilateral triangle with side lengths of 9mm and a height of about 7.8 mm. What is approximate surface area of prism?

285. physic

A stone drop from the edge of the roof of a multistoried building. Calculate the teme taken by the pot cross to a particular distance AB of height 2.9m, the upper point A being 19.6m below the roof.

286. social studies

In order to track time of the floods,Egyptians looked to?

287. Education

Personal Reflection: what attitudes, skills, and values, do you do as an individual, need to develop in order to implement a multicultural/anti-bias curriculum? I have to write a paper on that question and I don't understand what this mean? Can anyone

288. CHEMISTRY

Which solute will yield a saturated solution ( in the previous two question ) when we dissolve 36 g of each in 25 g of water at 25 oC ? and why ?

289. system of equations

today, johns mom is 5 times as old as he is. in 7 years she will only be 3 times as old. what is johns age today?

290. social studies

What did the Egyptians believe about the region to the west of the Nile.

291. CHEMISTRY

How can we prepare or change : 1) change unsaturated to saturated soln? 2) change unsaturated to supersaturated? 3) change saturated to unsaturated ? 4) change saturated to supersaturated ? 5) change supersaturated to unsaturated? 6) change supersaturated

292. Physics of Modern Technology

Label as true each of the following processes that are considered destructive to cells of a living organism (like you!). Label as false if they are not considered significantly destructive to cells of a living organism. A slow neutron combines with a