# Questions Asked onSeptember 24, 2016

1. ## Math

Check My answers 2. Name the Property of Equality that justifies this statement: if P = q then p + s = q + s. A. Reflexive Property B. Multiplication Property C. Symmetric Property D Addition Property **** 3. Use the given property to complete the

2. ## Chemistry

Aqueous solutions of copper (II) sulfate, CuSO4, and potassium carbonate, K2CO3, a blue parcipitate of copper (II) carbonate forms in addition to one other compound. We have to write the balanced chemical equation for that but our teacher didn't teach us

3. ## Chemistry

An element has three stable isotopes. One has a mass number of 63 and an abundance of 50%. The second has a mass number of 65 and an abundance of 30%. The third has a mass number of 67 and an abundance of 20%. Calculate the relative atomic mass of this

4. ## Precalculus

Circle O below has radius 1. Eight segment lengths are labeled with lowercase letters. Six of these equal a trigonometric function of theta. Your answer to this problem should be a six letter sequence whose letters represent the segment lengths that equal

5. ## american government

what expressed powers show that the framers wished congress to have the power to secure the nation against? 1. raise armies and a navy 2. establish a federal post office 3. levy taxes, duties, and excises 4. regulate interstate commerce 5. govern the

6. ## History

1. Which group most directly influenced the maya and the Aztec? A: Mexican B.moche C.olmec * D.puebloan 2.Which of the following are evidence that one civilization had a large influence on both the Maya and the Aztec? Select all that apply. (3 are correct)

7. ## Physics

Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.00 m/s and Luna runs at a speed of 1.20 m/s. If Chloe jumps at an angle of 37.0° while still running toward Luna, at what distance from

8. ## Physics

A BMX rider is coming up to a ramp that is set to 23.0° and the end point is 1.60 m above the ground. They travel up the ramp at a steady speed of 9.20 m/s. What speed will they have just before they hit the ground?

9. ## Math

A room measures 6m by 8m to the nearest meter. A carpet tile measures 50cm exactly. What is the maximum number of carpets tiles that need to be bought to cover the floor of the rectangular room?

Juan plans to build a bookcase to store his paperback books, DVDs, and CDs. He has lumber that he will use for the sides and back of the bookcase. The bookcase will have five shelves, and each shelf will be 2 1/2 feet long. DVD cases are 9 16 inch wide. a.

11. ## Math

When might I need to estimate a sum?

12. ## biology

is c2h5 polar or non polar?

13. ## Physics

Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.80 m/s and Luna runs at a speed of 1.60 m/s. If Chloe jumps at an angle of 17.0° while still running toward Luna, at what distance from

14. ## Physics

You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 4.90 m/s. You jump at an angle of 30.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.72 m away from you. If

15. ## chemistry

Paper pulp is sold on the basis that it contains 12% moisture; if the moisture exceeds this value, the purchaser can deduct any charges for the excess moisture and also deduct for the freight costs of the excess moisture. A shipment of pulp became wet and

16. ## chemistry

A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 252 torr . Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What is the mole fraction of

17. ## Social Studies

Before 1720, what was the difference in the relationships between the Spanish and the Apache compared to the Spanish and Hasinai? A. The Spanish made peace with both the Apache and the Hasinai. B. The Spanish had a working relationship with the Hasinai

18. ## Geometry

I have another question that stumped me Line segment AB with length a is divided by points P and Q into three line segments: AP , PQ, and QB , such that AP = 2PQ=2QB. Find: A)the distance between point A and the midpoints of the segments the segment QB B)

19. ## Stats, Statistics, Math

A Statistics professor assigned 10 quizzes over the course of the semester. He wanted to see if there was a relationship between the total mark of all 10 quizzes and the final exam mark. There were 229 students who completed all the quizzes and wrote the

20. ## chemistry

A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 11.07 % naphthalene by mass. Calculate the vapor pressure at 25 ∘C of hexane above the solution. The vapor pressure of pure hexane at 25 ∘C is 151 torr.

21. ## Physics

You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 4.20 m/s. You jump at an angle of 28.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.57 m away from you. If

22. ## Math

A 36 inch board is to be cut into three pieces so that the second piece is 3 times as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first piece find the length s of all three pieces

23. ## value

what happens when a solution of iron 2 sulphate in a test tube was bubbled through chlorine gas

24. ## maths need help

angles of a certain polygon are in arithmetic sequence. The smallest interior angle measures 80 degrees and the largest interior angle measures 160 degrees. How many sides does the polygon have? Plz show me work i don't know it at all plz

25. ## english

There is a text named Adolescent Confusion by Maya Angelou, and I have to write a paragraph about : Most teenagers are, at times, as impulsive and unthinking as Angelou was. Write a narrative about a time during your teenage years when you did something

26. ## Physics

A missile is fired with a launch velocity of 15000 ft/s at a target 1200 miles away. At what angle must it be fired to hit the target? how long after it is fired will the target be hit?

Juan plans to build a bookcase to store his paperback books, DVDs, and CDs. He has lumber that he will use for the sides and back of the bookcase. The bookcase will have five shelves, and each shelf will be 2 1/2 feet. DVD cases are 9 16 inch wide. a. If

28. ## Math

Village B is 7km due south of village A and village C is 9km due south of B. Village D is 8km from A and is due east of B. Find DB and DC.

29. ## math

Juan sells suits in a major department store on weekends.He earns a commission of 5% on the first 10 suits, and if he sells more than 10 He earns an additional 3% on the additional suits. Last weekend Juan sold 13 suits at a price of \$250 each. What was

30. ## Chem

A hypothetical molecule, X–Y, has a dipole moment of 1.76 D and a bond length of 151 pm. Calculate the percent ionic character of this molecule.

31. ## Chemistry (Help!)

Reaction: 1/2N2 + 3/2H2 --> NH3 Delta H = -46Kj/mol 1) Find delta H n(NH3)formed=5 mol. M(NH3=8.5g) 2) Find delta H a)3 mol H2 + 3 mol N2 b) 3 mol H2 + 0.5 mol N2 M NH3 = 17 g/mol ???

32. ## Math

Jacob opens a savings account on Jan 1 with a deposit of \$250. Every other week \$25 is deposited. The bank charges \$3 for a processing fee monthly. How much will he have at the end of the year?

33. ## American Government

which of the following best describes the interpretation of the constitution by a strict constructionist? A. favors a powerful national government that exercises implied powers B. favors a strong president and the necessary and proper clause C. favors a

Which of the following is a primary cause of sick building syndrome in the United States? A. large number of outside ducts B. unsealed windows C. thinly insulated buildings D. hazardous construction materials An : D

35. ## Science

You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already

36. ## Maths

Find the measure of angle BCA and angle BAC if the measure of angle B is 65°

37. ## maths

Prove that in any triangle ABC Sin2A+Sin2B+Sin2C/SinA+SinB+SinC=8Sin(A/2)Sin(B/2)Sin(C/2)

Juan measured the location for the bookcase and realized that his shelves can be no more than 13 4 feet wide. a. What is the maximum number of shelves Juan could build for this new bookcase using the lumber he bought? b. How many DVD cases will he be able

39. ## american government

which of the following gives congress the power to fund parts of the executive branch such as the department of education? A. eminent domain B. judicial powers C. strict constructionists of the constitution D. necessary and proper clause My best answer is

Juan plans to build a bookcase to store his paperback books, DVDs, and CDs. He has lumber that he will use for the sides and back of the bookcase. The bookcase will have five shelves, and each shelf will be 2 1/2 feet. DVD cases are 9 16 inch wide. a. If

41. ## CHEMISTRY HELP

Reaction: 1/2N2 + 3/2H2 --> NH3 Delta H = -46Kj/mol 1) Find delta H n(NH3)formed=5 mol. M(NH3=8.5g) 2) Find delta H a)3 mol H2 + 3 mol N2 b) 3 mol H2 + 0.5 mol N2 M NH3 = 17 g/mol ???

42. ## physics

HARRY GIVES SAM A 30m head start in 100m dash. Harry can run 10m/s, while sam only runs 6.0 m/s per second, how much of a head start does sam need to win!

Juan measured the location for the bookcase and realized that his shelves can be no more than 1 3/4 feet wide. a. What is the maximum number of shelves Juan could build for this new bookcase using the lumber he bought? b. How many DVD cases will he be able

44. ## Physics

Block A (Mass = 3.146 kg) and Block B (Mass = 2.330 kg) are attached by a massless string Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes overa frictionless, massless pulley. Block B hangs down

45. ## Maths

Ari had twice as much money as Rita. After Ari spent \$800 and Rita spent \$240 both of them had the same amount of money left .how much money did each of them have at first

46. ## american government

national emergencies, advances in technology, and demand for services have increased congress's acceptance of which view? A. conservative constructionists B. liberal constructionists C. radical constructionists D. strict constructionist which of the

47. ## Maths Percentage

Find the percentage of pure gold in 22-carat gold, if 24-carat gold is 100% pure gold.

48. ## English

Teen Financier Gets Oprah's Attention. How did Lesley Scorgie acquire the money to make her investments? Why is Lesley Scorgie unusual? Why do you think she was invited to be a guest on Oprah Winfrey's talk show? In what ways could Lesley Scorgie influence

49. ## Math

Information: Juan plans to build a bookcase t store his paperback books, DVDs, and CDs. he has lumber that he will use for the sides and back of the bookcase. Juan plans for his bookcase to have five shelves including, the top and bottom shelves. Each

50. ## communication skills

explore the following types of listening skills i) passive listening ii) active listening

51. ## math

Ron has a piece of rope 6 1/2 long,Tony has one that is 7 2/3m long.How long are their ropes if put together?

52. ## American government

what expressed powers show that the framers wished congress to have the power to secure the nation against? 1. raise armies and a navy 2. establish a federal post office 3. levy taxes, duties, and excises 4. regulate interstate commerce 5. govern the

53. ## Spanish

Can anyone write a short paragraph explaining how things are similar and/or different between the U.S. states that border Mexico?

54. ## Physics

"You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already

55. ## American government

what expressed powers show that the framers wished congress to have the power to secure the nation against? 1. raise armies and a navy 2. establish a federal post office 3. levy taxes, duties, and excises 4. regulate interstate commerce 5. govern the

56. ## Bows

How many pieces of 4 Inches of ribbon can get from a roll of 25 feet ribbon?

57. ## Math

Points P and Q are both in the line segment AB and on the same side of its midpoint. P divides AB in the ratio 2:3, and Q divides AB in the ratio 3:4. If PQ=2, then find the length of the line segment AB.

58. ## Physics

Block A (Mass = 3.500 kg) and Block B (Mass = 2.450 kg) are attached by a massless string Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes overa frictionless, massless pulley. Block B hangs down

59. ## Math

7 is subtracted from the quotient of 48 divided by sum of 5 and difference of 11 and 8

60. ## physical science

How much would a 81.4 kg person weigh on Venus, where the acceleration of gravity is 8.87 m/s2?

61. ## Spanish

Can anyone write a short paragraph explaining how things are similar and/or different between the U.S. states that border Mexico?

Juan has 28 paperback books. Each book is 11 4 inches wide. Will all his books fit on one shelf? If not, how many will fit and how many will have to go on another shelf? If yes, how many more paperback books, if any, will fit on the same shelf? Explain.

63. ## American Government

which of the following powers can congress exercise according to the constitution? 1. abolishing jury trials 2. collecting taxes 3. declaring war 4. requiring people to vote my best answer is 1 and 3

64. ## chemistry

How many GRAMS of carbon dioxide can be produced from 3.70 grams of oxygen ?

65. ## maths

guys need help on ODE questions, i just need you guys to tell me what method to use for the following equations and i will try solve them myself: a) (2y+tany)dx +(x-x^2(tany))dy=0 b) y'=(e^x)(2y+(e^x))+y(1+y) c) y'=1+y^2-x^2 any hints will be good also. XD

66. ## Chem

How many ml of 12M HCl are needed to prepare 500ml of 0.10 M solution? Step by step if you can please.

67. ## Chemistry

to determine the concentration of ascorbic acid in fruit juice using DCPIP

68. ## Social Studies

What countries are the following? is 20 degrees S, 140E? 40N, 20E? 40N, 100W?

69. ## Chemistry

CaCl2(s) -> Ca(aq) + 2Cl(aq) ΔH_rxn = +198.0 KJ "If that g sample of calcium chloride was dissolved in 1000.0g of water, with both substances originally at 25.0C, what would be the final temperature of the solution be? Assume no loss of heat to the

70. ## physics

Hello everyone I'm working on this problem and I need some clarification. A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines? What is the horizontal force that a 700 N pilot exerts on his seat?

71. ## Physics

If a dog chases its tail in a perfect circle of radius r at constant speed v, which of the following is true? A. The dog's acceleration is zero. B. The dog's velocity is constant. C. The sum of the forces, F , acting on the dog is zero. D. The time it

72. ## Biology

Explain the structure of a water molecule and how hydrogen bonding leads to some of its very special properties. Be sure to include how these properties are important to life on Earth

73. ## Physics

Four charges are located at the four corners of a square of side b: Q1 = 3 nC at the top right corner, Q2 = -4 nC at the bottom right corner, Q3 = 5 nC at the top left corner, Q4 = 7 nC at the bottom left corner. What is the electric field at the midpoint

74. ## US History

Could you pls check this time line 1, king George issues Proclamation of 1763 2, stamp act 3. Sons of Liberty 4. Boston Massacre 5. Boston Tea Party 6, coersive acts 7, 1st continental congress 8. 2nd continental congree 9. First sho of American revolution

75. ## Maths

Hey! I have this problem - i'm currently working on Quadratics at school, and i got homework. One of the questions is 18^2+2px+32. I have to find the Value of P, the answer i got is P>+-24. Can someone please confirm this is correct?

76. ## Math

If you had an inequality x is less than or equal to 8 would you shade towards the origin or away from the origin

77. ## maths

A variable tangent to the ellipse (x/a)^2 +(y/b)^2 meets the parabola y^2=4ax at L and M. Find the locus of the midpoint of LM.

78. ## English

1. When did they arrive at Yosemite? - They arrived at Yosemite in the afternoon on July 20. 1-2. When did they arrive at Yosemite? - They arrived at Yosemite in the afternoon on July 20, Friday. 1-3. When did they arrive at Yosemite? - They arrived at

79. ## Physics

While playing catch with your sister, you accidentally throw a tennis ball past her and horizontally out the window of your third floor apartment. If a window washer is startled by the passing tennis ball and drops her sponge from rest at that very moment,

81. ## Chemistry

The pressure in pressure cooker is 1.90 what will be the temperature

82. ## Algebra

To solve by the elimination method. 5x+7y=40,x=y+3

83. ## Algebra

To solve by elimination 4x-6y=10,x+y=0

84. ## English

I'm having trouble making out what this section means: "...and as soon as her daughter was in a condition, sent her to a monastery in France, the abbess of which had been her particular friend. And thus ended an intrigue which, considering the time it

85. ## Maths

There is a staircase connecting point A andB. Measurement of steps are marked. Find the line distance between A and B.fig 4.232 in rd sharma. Class10 Answer is 10

86. ## Report Writing

The narrative of a crime report and the narrative of an arrest report: a. are totally different b. need to be written in present tense and passive voice, c. follow the same rules d follow different rules

87. ## Chemistry

Similar question to http://www.jiskha.com/display.cgi?id=1474753951 "If that 22.33g sample of calcium chloride was dissolved in 1000.0g of water, with both substances originally at 25.0C, what would be the final temperature of the solution be? Assume no

88. ## Math

2,383 -1,907 ----------

89. ## Math

If you had an equation zero is less than or equal to 2 would you say that's true because 0 is less than 2 or false because it isnt equal to 2? What would I write down if it asked for T or F

90. ## Science

If you have 25 glucose molecules transporting out to 5 glucose molecules how will the molecules need to move to reach equilibrium? Out

91. ## Trigonometry

Give me some equations about angle of elevation, angle of depression and angle of inclination that is related to my course. Im a food technology student.

92. ## Physics

A fired bullet sounds is heard after2sec .its speed in air is 340m\sec.what is the distance of sound.

93. ## Math

three numbers are in harmonic progression. their mean is 20.if the first term is twice the third term find the three numbers???

94. ## Math-Algebra

What is the value of 4^2 - 2(3 x 5 + 1)? My answer~ I took (3 x 5 + 1) = 16 x 4^2 = 16 - 2 = 14, and I got 254, but that's not on my answer recommendations, I don't understand this at all, plz help meh!! A.8 B.1 C.-16 D.-21

95. ## Physics

An electric dipole p-> (-> is vector symbol) where p-> = (5x10^-15 C m, -5x10^-15 C m, 0 C m) located at r-> = (0 m, -0.005 m, 0m) Q = 1x10^-6 C at origin. What's the torque on the dipole?

96. ## Organic Chemistry

What would happen to the melting point of a solid if it is mixed with granular particles of glass? Explain.

97. ## English

1. Is John Hajun¡¯s gold friend or silver friend? He is Hajun¡¯s gold friend. 2. What do you want to do in Yosemite? I want to go fishing. 3. How many close friends do you have? I have five close friends. 4. Have you ever been to the States? No, I

98. ## Applications of functions

you have 20 gallons of gas in your car and you burn one gallon every 25 miles. write a function rule for the amount of fuel left in the car after every 25 miles

99. ## chemistry

If 10.0 L of butane and oxygen are combined at the same temperature and pressure, which gas will be left over after reaction? Include your calculation/reasoning.

100. ## Physics

You push a block of mass m up a plane inclined at angle θ at constant velocity v with a force F parallel to the inclined plane. The coeﬃcient of kinetic friction between the block and the plane is µk. Which is the correct equation for F? (g =

101. ## Science

1. What number on the pH scale is the strongest acid? 2. What number on the pH scale is the strongest base? Can you please help me with this. I am not sure.

102. ## Science

A car moves at 20 meters in 2 seconds. What is the momentum of the car if it has a mass of 3,000 kg? A football player runs across the field for a tackle. He has a momentum of 1,120 kg x m/s and is moving down the field at 10 m/s what is the mass of the

103. ## IT

Meaning, types and feautures of digital divide

104. ## Geometry

I am doing 7th grade algebra, and my homework is due by 9:00 and I don't know how to solve this question: Find the measures of supplementary angles 1 and 2 if, A) m angle 1 is less than m angle 2 by 40 degrees B) m angle 1:m angle 2=5:4 Please help soon my

105. ## Math

If you want to add 2/3 and 3/5, you will find the LCM of the denominators then divide the LCM of the denominators and multiply it with the numerators then add it...

106. ## Math/Chem

Is it possible to get a negative percent as an answer to a problem

107. ## maths

How many circles are there whose central lines on X axis and passes through origin?

108. ## Physics

Ximena stands near the edge of a cliff 20 ma bove her friend Javier. If she throws a ball to Javier at an angle = 30 below the horizontal and it reaches him in 1.0 s, ignoring air resistance, what was the magnitude of the sandwich's initial velocity? (use

109. ## Algebra

The perimeter of a rectangle is 80 in. The length is 6 inches more than the width. What are the dimensions of the rectangle

110. ## Chemistry

Five year old Andrew weighs 45 lbs and requires insulin. His doctor has prescribed 0.150 units of insulin/kg body weight/hr while he is in the hospital. The insulin bottle you have possesses a concentration of 20.0 units/15.0 ml and all must be given. Give

111. ## Math

I have a question. My teacher wrote down that 0 is less than or equal to 10 is true. Why is that?

112. ## Chemistry

Andrew weighs 45 lbs and requires insulin. His doctor has prescribed 0.150 units of insulin/kg body weight/hr while he is in the hospital. The insulin bottle you have possesses a concentration of 20.0 units/15.0 ml and all must be given. Give all answers

113. ## Physics

A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines? What is the horizontal force that a 700 N pilot exerts on his seat?

114. ## Maths

In a right angle traingle ANCIENT, ANGLE B=90 DEGREES. IF AB/AC=1/ROOT2 FIND BC/AC.

115. ## SCIENCE

The intensity of solar radiation at the surface of the earth is 1kW/m2 . A roof has a square solar panel of sides 10m that absorbs the radiation completely. What is the average force exerted on the panel?

116. ## maths help

What is the least number of rolls should a fair standard 6-sided die be done so that the recorded numbers that have been shown approximates a binomial distribution of standard deviation of 10 and a success occurs when a 4 is tossed?

117. ## math

Connie has 18 and mae has 16 apple also. How many apple they have? Solve in four different ways.

118. ## Social Studies

What country or continent is located at 40°S,100°E?

119. ## Maths

Muhhamad says my number has 6 tens.the ones digit less then ten digit.what could mahhamad number be show all possibilites.

120. ## Science

The binding energy of election is 13.6 v .the loss of mass in formation of h atom is

121. ## Chemistry

Please help...entrance exam soon Write the oxidation and reduction half reactions(showing e- lost or gained) for the foll O3 + I- -> IO3- + O2 (acidic)

122. ## Science

Q1-Who gave the equation (E=MC^2). Q2-Who gave the equation (V=IR). Q3-What was Newton's second law?. Q4-What was Newton's first law?.

123. ## Science

How do acidity and surface area affect the weathering of most materials? Can you also provide me with a website to read about this as well. I don't know