# Questions Asked onOctober 22, 2013

1. ## science

Which of the following is NOT a function of proteins? a: act as a main fuel for cells B: control chemical reactions in a cell

2. ## geometry

Lenny’s favorite radio station has this schedule: news: 15 min. commercials: 3 min. music: 42 min. If Lenny chooses a time of day at random to turn on the radio to his favorite station, what is the probability that the news will be on?

3. ## Oganizational Behavior

a form of intrinsic motivation rooted in the belief that work tasks contribute to some larger purpose is know as: a. self efficacy b. goal commitment c. goal setting d. psychological empowerment

4. ## Math

In a mathematics quiz, 20 problems are given, 5 points are given for each correct answer and 2 points are deducted for each incorrect answer. Ashley scores 51 points. How many correct answers does she have?

5. ## Calculus

To find the length of the curve defined by x=7t−t^2,y=4t^(3/2) from the point (0,0) to the point (12,32), you'd have to compute çb to a f(t)dt where a= b= f(t) =

6. ## math

Stephen drove at a constant speed from Town X to Y at 9 A.M.yesterday. Half an hour later Cole drove from Town X to Y at A constant speed that was 30 km/h faster than Stephens. By 9:30 A.m, Stephanie had already traveled 40 km. Cole caught up with Stephen

7. ## World History

What are some common things people do for a living in the Complex Civilization time period?

8. ## Mathematics

George vacuums the rugs every 21 days, mows the grass every 12 days, and pays the bills every 15 days. Today he did all three. How long will it be before he has another day like today?

9. ## Chemistry

Solutions of potassium carbonate, copper(II) chloride, and lead(II) nitrate are each added to a beaker. Will any compound(s) precipitate from solution? Write a balanced net ionic equation for any precipitation reaction that occurs. I have gotten this so

10. ## math

If f(x+y)=f(x)+f(y)+5xy and lim f(h)/h =3. h»0 Find f'(x)

11. ## Chemistry

An 80.0 g sample of a gas was heated from 25 degree C to 225 degree C. During this process, 346 J of work was done by the system and its internal energy increased by 7495 J. What is the specific heat of the gas? J/(g∗C)

12. ## math

the lenght of a rectangular room is 6 feet longer than twice the width. If the room's perimeter is 132 feet, what are the room's dimensions?

13. ## Physics

A spherical source radiates sound uniformly in all directions. At a distance of 12 m, the sound intensity level is 100 dB. At what distance from the source is the intensity level 40 dB? When I set it up as 100dB/40dB = r^2/(12m)^2, and got x = 18.97

14. ## Chemistry

The protective action of ozone in the atmosphere comes through ozone's absorption of UV radiation in the 230 to 290 nm wavelength range. What is the energy, in kilojoules per mole, associated with radiation in the wavelength range?

15. ## Algebra 1 HELP

Identify the range of the function with the given domain. x+3y=-8 Domain x¡Ý0

16. ## Calculus

Use continuity to evaluate. as x approaches 2, lim arctan((2x^2-8)/(3x^2-6x))

17. ## algebra

the weight of a body above the surface of earth varies inversely with the square of the distance from the center of the earth. if maria weighs 125 pounds when she is on the surface of the earth(3960 miles from the center),determine maria weight if she is

18. ## science

You have a pulley 13.9 cm in diameter and with a mass of 1.7 kg. You get to wondering whether the pulley is uniform. That is, is the mass evenly distributed, or is it concentrated toward the center or the rim? To find out, you hang the pulley on a hook,

19. ## Math

A girl is three years older than her brother. If their combined age is 35 years, how old is each?

20. ## Finance

Assume a bank has \$5 million in deposits and \$1 million in vault cash. If the bank holds \$1 million in excess reserves and the required reserves ratio is 8 percent, what level of deposits are being held?

21. ## Physics pls anyone can help me? its urgent

Three negative charges with charge -q occupy the vertices of an equilateral triangle with sides of length L What is the magnitude of the electric field in units of k*q/L^2 at the center of the triangle? Give a numerical answer that is the number that would

22. ## math

In a class of 40 students, 27 like math and 25 like Filipino. At most how many students do not like at least one of these subjects?

23. ## Science

In a particular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? 25 50 75 100

24. ## math

Evaluate the expression 6^-2 x 4^0. a)12 b)48 c)1/36 d)36 Write 3^2 x 3^-3 x 3^6 as a single exponent. a)3^4 b)3^5 c)3^11 d)27^5

25. ## Calculus

Evaluate the limit. as x approaches infinity, lim sqrt(x^2+6x+3)-x

26. ## college physics

Three negative charges with charge -q occupy the vertices of an equilateral triangle with sides of length L What is the magnitude of the electric field in units of k*q/L^2 at the center of the triangle? Give a numerical answer that is the number that would

27. ## college physics

A small sphere of mass m and charge +q with zero velocity falls under the influence of gravity (acceleration = g from height h onto an infinite uniformly charged plane with positive charge density sigma as shown below. What will the velocity of the sphere

28. ## Math - Urgent

3-2/9b=1/3b-7 What does b equal? Please show all work

29. ## Chemistry

what is the resultig pH if 0.005 mol of NaOH is added to 100.0mL of buffer containing 0.010 mol acetic acid (CH3COOH,pKa = 4.74)and 0.010 mol sodium acetate (NaCH3COO)? (Assume the final volume is 100 mL) So i worked it out, i just need to double check the

30. ## science

A substance that has a mass of 20g and volume of 10cm3. How much mass does one cm3 of this substance have? A substance with a mass of 125g and a volume of 25cm3. How much mass does one cm3 of this substance have? Please tell me how to do this.

31. ## Chemistry

In a constant-pressure calorimeter, 65.0 mL of 0.330 M Ba(OH)2 was added to 65.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 23.85 °C to 28.35 °C. If the solution has the same density and specific heat as water,

32. ## ap chemistry

A sample of 1.67 grams of Z is dissolved into 500 grams of water which is in a Styrofoam coffee cup. The temperature is monitored and is found to rise from 25.594◦C to 26.041◦C. What is Hsolution for substance Z? Assume no heat is lost/gained by the

33. ## English

Could someone please check my answers? I'll type the directions above the different types of questions. *Cross out any prepositional phrases. Underline the subject once and the verb twice. 1. Below the sink is the garbage can. (prepositional phrase- below

34. ## ap chemistry

Consider the specific heats H2O(s) =2.09 J/g ¡¤◦C,H2O (§¤) = 4.18 J/g ¡¤◦C, and H2O(g) = 2.03 J/g ¡¤◦C. The heat of fusion for water is 334 J/g and its heat of vaporization is 2260 J/g. Calculate the amount of heat required to convert 92 g of

35. ## ap chemistry

Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.) The combustion of carbon is described by the equation C(s) + O2(g) −! CO2(g) H◦ = −394 kJ What is the value

36. ## geometry

8. iN triangle ABC, a point D is on AC so that AB=AD. ANGLE ABC - ANGLE ACB = 30. IND ANGLE CBD. PLEASE TELL ME WHAT TO DO. I BEG YOU. PLEASE

37. ## physics

You hold one end of a rope and pull horizontally with a force of 65N. Calculate the tension in the rope if the other end is tied to a wall and held by a friend who pulls with 65 N in the opposite direction. It's tied to a object on a smooth ice.

38. ## Math

Sophia buys an eqaul number of oranges and pears for a party. The oranges are bought at a price of 7 for \$2 and the pears are bought at a price of 5 for \$3. She pays \$33 more for the pears than the oranges. How much does Sophia pay in all? How many oranges

39. ## MATH

Marit and jennifer had an equal number of crackers. Each day, Marit ate 12 crackers and Jennifer ate 6 more crackers than Marit. When Jennifer had 24 crackers left, Marit had 96 crackers left. How many crackers did each of them have at first?

40. ## Math

Robert and Damien had the same amount of money. Each day, Robert spent \$4 and Damien spent \$6. When Damien had \$12 left, Robert had 4 times as much money as Damien. How much money did each boy have at first?

41. ## World History

Hi sorry for another question but How could historians help us understand why two groups of people are in conflict?

42. ## science

Which of the following is NOT a function of proteins? a: act as a main fuel for cells B: control chemical reactions in a cell

43. ## s.s

in the poem o captain my caption, identify all the descriptions Whitman use to compare the war to a storm and the north to a ship .how do the words used in each separate comparison characterize the war and the north

44. ## Physics

A spherical source radiates sound uniformly in all directions. At a distance of 12 m, the sound intensity level is 100 dB. At what distance from the source is the intensity level 40 dB? When I set it up as 100dB/40dB = r^2/(12m)^2, and got x = 18.97

45. ## Physics

A spherical source radiates sound uniformly in all directions. At a distance of 12 m, the sound intensity level is 100 dB. At what distance from the source is the intensity level 40 dB? When I set it up as 100dB/40dB = r^2/(12m)^2, and got x = 18.97

46. ## Applied Physics

When a 3600 lb automobile runs out of gas, it is pushed by its unhappy driver and a friend a quarter of a mile (0.250 mi). To keep the car rolling, they must exert a constant force of 175 lb. (a.) How much work do they do? (b.) If it takes them 15 minutes,

47. ## statistics

a sample of 50 women is obtained and their heights (in inches) and pulse rates (in beats per min) are measured. the linear correlation coefficient is 0.229 and the equation of the regression line y= 17.9 +0.870x where x represents hight. the mean of the 50

48. ## math

Erin is thinking of a 3-digit number.It uses the digits 1,7 and 4.How many numbers can I make that are odd? How many numbers can I make that are even ?Thanks!

49. ## News

We have to point out the significance and impact to this story: Michigan residents looking to trade in their vehicle for a new one may be in line for a tax break. State lawmakers appear poised to vote to phase out a requirement that buyers pay sales tax on

50. ## CHEMISTRY

What volume of 0.400 M Hg(NO3)2 is needed to precipitate all the I- ions from 250.0 mL of 0.300 M FeI3 There will be a follow-up questions so pay attention to my post!

EXPLAIN HOW YOU INTERPRET THE REMAINDER. THERE ARE 10 PENCILS TO BE GIVEN TO 3 STUDENTS. HOW MANY PENCILS DOES EACH STUDENT GET?

52. ## math

Erin is thinking of a 3-digit number.It uses the digits 1,7 and 4.How many numbers can I make that are odd? How many numbers can I make that are even ?Thanks!

53. ## Science

Suppose you found a fossil of a clam shell what can you conclude about the once-living organism and how it became a fossil? I need some ideas for answering this question.

SIXTY-SEVEN STUDENTS ARE GOING ON A FIELD TRIP TO THE ZOO. THE PRINCIPAL NEEDS TO DECIDE HOW MANY CARS AND VANS ARE NEEDED TO TRANSPORT THE STUDENTS. EACH CAR CAN SEAT 5 STUDENTS AND EACH VAN SEATS 9. THE PRINCIPAL WOULD LIKE TO USE THE FEWEST NUMBER OF

A hawk flying at 25 m/s at an altitude of 150 m accidentally drops its prey. The parabolic trajectory of the falling prey is described parametrically by x=25t,y=150−4.9t^2 until it hits the ground. The variable x represents the horizontal distance

56. ## Chemistry

A calorimeter contains 50.0 mL of water; both are at 21.2 degrees C. Then the 50.0 mL of water at 57.6 degrees C is added to the calorimeter. At equilibrium, the final temperature of the water and the calorimeter is 33.3 degrees C. Calculate the heat

57. ## math

Pencils come in cartons of 24 boxes.A school bought 50 cartons of pencils. Each box of pencils cost \$2. How much did the school spend on pencils?

FRANK, KENDRA, AND LIN ARE PAINTING A MURAL. THERE ARE 2 SETS OF PAINTS, EACH WITH 50 COLORS. PAINTS ARE PASSED OUT UNTIL EVERYONE HAS THE SAME NUMBER. HOW MANY COLORS DOES EACH WORKER GET?

59. ## math

Write the multiplication expression for each expanded form. The match the multiplication expression with its product. (7x900)+(7x80)+(7x7) A. 15,144 B. 7,065

60. ## Science

In an experiment to find out how the proportion of cement in a concrete mixture affects the products strenghth what would be two controlled variables and what could a possible source of error in this experiment be ? Thank you for your help!

61. ## hihhh

A car starts from rest and covers a distance of 22.0 m while accelerating at a constant rate of 2.6 m/s2. If the radius of the car wheels is 26.0 cm, what is the final angular speed (in rad/s) of the car wheels? Hint: If you're unsure where to start, think

62. ## algebra

the weight of a body above the surface of earth varies inversely with the square of the distance from the center of the earth. if maria weighs 125 pounds when she is on the surface of the earth(3960 miles from the center),determine maria weight if she is

63. ## Math

The lengths of two rivers are given in the table. About how many times as long is the Nile River (4,160) as the Monongahela? (128)

64. ## Math - Urgent

3/4x+2=7+1/3x What does x equal? Please show all work.

65. ## math

just want to check if my answer is right for this problem: 4+[20/4)*2] + [(2*8)/4]=18 is the answer 18?

66. ## MATHS

A store sells almonds for \$16 per kilo and peanuts for \$6 per kilo. If it sells 20 kilos of mixed nuts for \$13 per kilo, how many kilos of almonds are in the mixed nuts?

67. ## math

Ron has 4 new songs on his MP3 player. In how many different order can he burn them to a cd?

69. ## venn diagrams

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 29 said they drove alone. 25 rode in a carpool. 30 rode public transportation. 7 used both carpools and public transportation. 6 used

70. ## Math - Urgent

3-2/9b=1/3b-7 What does b equal? Please show all work.

71. ## MathJ.C.

Solve the system using matrices 4x+2y=2 5x+8y=30

72. ## math

A geologist collected a 2.5-kg soil sample for analysis. If she only needs 20 grams of sample to perform the analysis, what percentage of the soil sample will be tested? Answer: .8% 2.5kg = 2500g 20/2500 = .008 = .8%

73. ## Practice Exam Calculus

f(x) = 6sqrt{x}- 9x n the interval [1,9]. f(c)=f(9)-f(1)/9-(1)=? Verify that the conclusion of the Mean Value Theorem holds by computing Now find,c in (1, 9) so that f'(c) equals the answer you just found. c=?

74. ## Jonh Muir

Juan collects shells. He had 15 before he went on vacation. On vacation he found 4 shells per day for 3 days. Then he found 6 shells on the fourth day. Write an expression and solve it to find out how many shell he has after vacation.

75. ## Algebra 1

A gardener at a nursery is ﬁlling pots with soil to prepare to transplant seedlings into these larger pots. Each new pot needs about 27 cubic inches of soil. The amount of soil s (in cubic inches) it takes to ﬁll p pots is given by the function s 5

76. ## English 1

What does Lao-tzu imply about the role of government versus the role of the people in the Tao- te Ching? Is one role much more important than the other? What can modern readers learn about the two roles when applying Lao-tzu’s principles to modern

77. ## Calculus

x=7t−t^2,y=4t^(3/2) from the point (0,0) to the point (12,32), you'd have to compute integral b to a f(t)dt where a= b= f(t) =

78. ## Chemistry

Make sure the water’s Mass is still set to 1.0 kg and its Temp is 25 °C. Set the cylinder’s Height to 500 m. How does doubling the mass affect the temperature change of the water?

79. ## cal

Find the slope of the graph of the function at x = 5. f(x)= -2x^2+6/x^2

80. ## economics

A museum increases its admission price by 10 percent. As a result, total revenues increase by 10 percent. This implies that, ignoring the sign, the price elasticity of demand for admission is:

81. ## social studies

in the poem o captain my caption, identify all the descriptions Whitman use to compare lincoln to a ship's caption.what kind of a leader dose the speaker consider lincoln?

82. ## Physics

if an acrobat who weighs 800 N is clinging to a vertical pol using only his hands, neither moving up nor down can we determine the coefficient of static friction between his hands and the pole? Explain your answer.

83. ## Math

Which numbers are rational: 1/7; the square root of 13; 19.12; -15; The square root of 200; 8/15; 52.7246...

84. ## math

Felicity is deep-sea diving with two friends. Todd is exploring a coral reef 6 meters in front of Felicity, and Beth is floating on the surface directly above Felicity. If Beth and Todd are 10 meters apart, how far apart are Felicity and Beth?

85. ## Math

Which of these numbers are real numbers and rational numbers: -2/3; 0.32; 27.38452...; 6.4; the square root of 15

86. ## math

charlie used his cell phone for a total of 1216 minutes in one month. if he talked the same number of minutes each day, what is the best estimate for his daliy minute usage? A. 4,000 minutes B. 400 minutes C. 40 minutes D. 4 minutes PLEASE HELP ME IF I

87. ## s.s

in the poem o captain my caption, what is the tone of the speaker in the second stanza ?How do the crowds of people respond to Lincoln arrival ? What deso he suggest when he says," It is some dream that on the deck /You've fallen cold and dead

88. ## Math

What 3 numbers round 72.84 to nearest hundredth

89. ## physics

(a) One of the moons of Jupiter, named Io, has an orbital radius of 4.22 108 m and a period of 1.77 days. Assuming the orbit is circular, calculate the mass of Jupiter. (b) The largest moon of Jupiter, named Ganymede, has an orbital radius of 1.07 109 m

90. ## french

Match the question with the letter of the appropriate answer pourquoi est - CE que tu e' tudies le francais

91. ## chemistry

if 5.2 grams of bismuth react under certain conditions with 10.0 g of oxygen what is the empirical formula of the bismuth formed

92. ## algebra 2

3x2 – 12x + 7x – 28 factor the polynomial by grouping

93. ## Math

Which of these numbers are real numbers and are NOT integers? -6; 0; 12/49; 54.6 5,198

94. ## Chemistry

If you have iron(II) oxide(s) + oxygen(g) ---> Iron(III) oxide(s), Would the answer be FeO3 + O2 ---> FeO3 for a skeleton equation?

95. ## Chemistry...

What volume of 0.400 M Hg(NO3)2 is needed to precipitate all the I- ions from 250.0 mL of 0.300 M FeI3? Is the answer 93.8mL??

96. ## calculus

(A) Consider the wave equation with c=1, l=1, u(0,t)=0, and u(l,t)=0. The initial data are: f(x)=x(1-x)2, g(x)=sin2(pi x). Find the value of the solution at x=0, t=10, and at x=1/3, t=0. Find the value of the solution at x=1/2, t=2. (B) Suppose that l=2,

97. ## math venn

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 29 said they drove alone. 25 rode in a carpool. 30 rode public transportation. 7 used both carpools and public transportation. 6 used

98. ## Finance

Following are selected balance sheet accounts for Third State Bank: vault cash  \$2 million; U.S. government securities  \$5 million; demand deposits  \$13 million; nontransactional accounts  \$20 million; cash items in process of collection \$4 million;

99. ## math

use the number 751,486. write the name of the period that has the digits 486

100. ## math

which of these numbers can be classified as both real and rational ? a) 1/2 b) -1.016879413894 c)square root of 5 d) 0.89089908999

101. ## social studies

in the poem o captain my caption, identify all the descriptions Whitman use to compare lincoln to a ship's caption.what kind of a leader dose the speaker consider lincoln?

102. ## Chemistry

What does a change in the color of precipitate over time when a mixture of two solutions is combined with a reagent indicate?

103. ## Finance

A new bank has vault cash of \$1 million and \$5 million in deposits held at its Federal Reserve District Bank. a. If the required reserves ratio is 8 percent, what dollar amount of deposits can the bank have? b. If the bank holds \$65 million in deposits and

104. ## Physics

Two main strategies are employed to deflect an asteroid: destruction or slowing it down by at least 425 s so that the earth can move out of the impact zone. Assume perfect inelastic collision. (a) If we know the speed of the asteroid (va), mass (ma), and

105. ## Economics

1) What does, "How will you distribute your product." Mean? 2) What does, "How do you intend to create a demand for your product." Mean?

106. ## chemistry

What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 7.9 g of Cl2

107. ## Sociology

Describe the group treatment of minorities as a continuum from acceptance to rejection.

108. ## Chemistry

How many atoms of nitrogen are in the same amount of ammonia? Use molar mass.

109. ## social studies

How did the Lenape divide work between women and men

110. ## science

how dose the sea floor spreading cause tectoni plates to move

111. ## Science

Suppose you found a fossil of a clam shell what can you conclude about the once-living organism and how it became a fossil? I need some ideas for answering this question.

112. ## grammar / english (10th grade)

Two sentences: 1) The race among the three relay teams was close; none of the three; however, is giving up hope of winning. 2) The race among the three relay teams was close; however, none of the three is giving up hope of winning. Which is the correct one

113. ## math

A geologist collected a 2.5-kg soil sample for analysis. If she only needs 20 grams of sample to perform the analysis, what percentage of the soil sample will be tested? Answer: .8% 2.5kg = 2500g 20/2500 = .008 = .8%

Vic puts his photos in albums. He has 1 album of 25 pages. There are 4 photos on each page. He also has a 20 pages album with 3 photos on each page. how many photos doe he have in the two albums

115. ## Chemistry

Help! If I have 0.0031 absorbance/sec, how would I convert this to absorbance/minute? Thanks

116. ## Algebra

Consider a circle with a radius of 3m. Joe thinks the area of the circle is 3m^pi. Do you agree with Joe? Why or why not?

117. ## development studies

“Dependency” theorists believe that moving surplus labor from agriculture to industry where that labor will earn profits that can be reinvested for further growth is the key to overall economic growth and development. Is this statement true or false?

118. ## Algebra

If a circle has an area of 49pi what is the radius of the circle?

Brad took the photos at his aunt's wedding. he took 22 picture before the wedding. half as many many pictures during the wedding and twice as many pictures after wedding. how many wedding pictures did brad take in all?

120. ## college chemistry

exactly 11.2 ml of water at 23°c are added to a hot iron skillet. all of the water is converted into steam at 100°c. the mass of the pan is 1.5 kg and the molar heat capacity of iron is 25.19 j/(m·°c). what is the temperature change of the skillet

121. ## geometry

what year does college look at gpa i got a 3.o for my midterm and if i get 4.0s all other erms of my freshmen year and rest years can i make it to a uc

122. ## algebra

x^2 − 10x + 20 = 0 how would u input this answer?

123. ## Geometry

Compare and Contrast - Describe the difference between saying that two segments are congruent and saying that two segments have equal length. When would you use each phrase?

124. ## ap chemistry

Calculate the energy required to heat 827 g of mercury from 37 ◦C to 42 ◦C. The specific heat capacity of Hg(§¤) is 0.138 J/g ¡¤◦ C. Answer in units of calories

125. ## ap chemistry

When 0.515 g of compound X is burned completely in a bomb calorimeter containing 3000 g of water, a temperature rise of 0.243◦C is observed. What is Urxn for the combustion of compound X? The hardware component of the calorimeter has a heat capacity of

126. ## us history

what was captain Mahan's message? How did it influence Lodge and Roosevelt?-

127. ## mah

does the prime factorization using exponents and then add 1 to each exponent. then he find the product of these numbers.will this method work why or why not

128. ## English

Urgent. Please remove thread asap. English Sam, Monday, October 21, 2013 at 5:50pm Thank you

129. ## math

Draw 3 possible rectangular gardens Nan could make that use 360 feet of fencing. Include the length and width of each garden

130. ## Noun and Adjective Clauses

Amanda bought a prom dress which she considered the most beautiful dress ever made. Adjective clause:Amanda bought a prom dress Word(s) modified:dress

131. ## Linear Algebra

Let R5[t] be the vector space of all polynomials in t of degree 4 or less with real coefficients. Which of the following subsets are subspaces? I know how to test if something is a subspaces, just not sure how to do it with for these polynomial equations.

132. ## Linear Algebra

Let R5[t] be the vector space of all polynomials in t of degree 4 or less with real coefficients. Which of the following subsets are subspaces? I know how to test if something is a subspaces, just not sure how to do it with for these polynomial equations.

133. ## writing

URGENT Please remove thread as previously requested asap. Thank you. Writing Sam, Monday, October 21, 2013 at 5:46pm

134. ## physic

A 2.25kg book is dropped from a height of 2.5m what is the acceleration?

135. ## Algebra

Do side lengths 30, 18 and 24 form a right triangle? How did you figure it out?

136. ## Math

What is the gcf of 1 and any other number?

137. ## ap chemistry

Consider the specific heats CH2O(s) = 2.09 J/g ¡¤◦ C. CH2O(§¤) =4.18 J/g ¡¤◦ C. CH2O(g) = 2.03 J/g ¡¤◦ C. The heat of fusion for water is 334 J/g and the heat of vaporization for water is 2260 J/g. Calculate the amount of heat absorbed when

138. ## ap chemistry

How much heat is required to heat 19 g of solid silver from 100 ◦C to liquid silver at 961◦C? The specific heat of solid silver is 0.235 J/g ·◦ C, and the heat of fusion of silver at its melting point of 961◦C is 11.3 kJ/g. Answer in units of kJ

139. ## Physics

Calculate how much work does a block of aluminum of mass 100 kg do if it is heated at P = 1 atm from 20 degrees to 660 degrees. n.b. - The density of solid aluminum at 20 degrees is p= 2.7 g/cm^3. When it is liquid at 660^C the density of the liquid state

140. ## math

the biology class has a lab every days. the earth science class has a lab every three days . which class day do they both have class ?

141. ## math

A farmer has 110 metres of fencing to fence off a rectangular area. Part of one side is a wall of length 15m. Find the dimensions of the ﬁeld that give the maximum area. Thank you so much for a huge help.

142. ## physics

If my kinetic coefficient and static coefficient are both 1.02, how can I explain why they are the same???? (For a horizontal surface)

143. ## Physics

agent dave, flying a constant 215 km/hr horizontally in a low - flying helicopter wants to drop a small explosive onto a master criminal automobile travelling 155km/hr on a level highway 78m below. At what angle (with the horizontal) should the car be in

144. ## Physics

A generator has a square coil consisting of 700 turns. The coil rotates at 78 rad/s in a 0.21-T magnetic field. The peak output of the generator is 120.00 V. What is the length of one side of the coil?

145. ## Physics

agent dave, flying a constant 215 km/hr horizontally in a low - flying helicopter wants to drop a small explosive onto a master criminal automobile travelling 155km/hr on a level highway 78m below. At what angle (with the horizontal) should the car be in

146. ## American Govt

What expectations does the American public have of the federal government?

147. ## Math

A caterpillar has twice as many legs as a spider. Together, they have 24 legs. How many legs does the spider have? How many legs does the caterpillar have?

148. ## Math-Algebra

Mrs. Fine had a car accident. According to the police investigation, her car make skid marks which were 42 ft in length. What was the speed of the car of Mrs. Fine at the time of the accident? Did she manage to follow the speed limit?

149. ## Science

How does seafloor spreading cause tectonic plates to move ?

150. ## math

Aaron and Benga have a total of 976 trading cards. Benga has 7 times as many cards as Aaron. How many cards should Benga give Aaron so that Aaron will have 3 times as many cards as Benga?

151. ## Math-Algebra

Bracy would like to form a right triangle our of her wooden sticks. She cut the first stick of the length 6 inches and the second stick of the length 4 inches. What should be the length of the third stick to make sure she will be able to form a right

Can you check these, please(studying order of operations). 1. Sam bought two CDs for \$13 each. Sales tax for both CDs was \$3. Write an expression to show how much Sam paid in all. Ans: 13*2+3 2. Alicia made 24 chocolate chip cookies and 36 sugar cookies.

153. ## cal

Use the Quotient Rule to differentiate the function. f(x)= 8x/x^5+3

154. ## Math-Algebra

If h^2 = 40000 j^8, then the principal root of h is _____.

155. ## Math

There were 149 angelfish and goldfish in an aquarium. There were twice as many guppies as angelfish. After selling 35 goldfish, there are half as many goldfish as angelfish. How many fish are left in the aquarium?

156. ## English

1. On Tuesday Timmy brought in a book about famous explorers. 2. The book told about brave sailors from Europe. 3. Was Columbus looking for gold an spices? 4. His ship got lost and landed off the coast of North America in 1492. 5. Our class also learned

157. ## Math

y = (x^2.7/9 + 7/x^2.7) (9x-1) dy/dx solve derivative and show work

158. ## juvenile justice

17 letter word that means accepting the criminal label

159. ## Science

Explain how our everyday uses of natural resources around us become biomass. Give examples from your everyday life of resources that can later become biomass.

160. ## College Physics

A Major League fastball is thrown at 92.1 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 61.4 ft, how many full turns does the ball make between release and catch? Neglect any

161. ## Creative writing

I've read examples (and seen movie examples), but I'm still having trouble with the idea of writing a story within a story. Basically, a girl is writing a story about a boy, and he eventually LEARNS that he's being written about. So how do I write his

162. ## Microeconomics

Assume that you own a lake house. Unfortunately your job will require that you spend the summer on the road and you won’t be able to enjoy it. You decide that you will rent it out for the summer while you are working. The mortgage payment on the lake

163. ## math

A farmer has 110 metres of fencing to fence off a rectangular area. Part of one side is a wall of length 15m. Find the dimensions of the ﬁeld that give the maximum area. Answers: length and width = 31,25m Thank you so much for a huge help.

164. ## Mathematics

Is 27.38452... a real and a rational number?

165. ## Chemistry- DrBob222

I completed this question like you told me to. Are the answers correct? Is my method for finding the molecular formula correct? 2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass

166. ## Chemistry

List a series of test that would determine the order of activity (least active to most active) for the following metals: Zn, Mn, and Ag.

167. ## Biomechanics

Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larry’s acceleration in m/s2? What is happening to the elevator

168. ## Physics

A generator has a square coil consisting of 700 turns. The coil rotates at 78 rad/s in a 0.21-T magnetic field. The peak output of the generator is 120.00 V. What is the length of one side of the coil?

169. ## Math

For every 5 highlighters that Agnes buys, she gets 1 free. If Agnes needs 80 highlighters, what is the least amount she has to buy?

170. ## physics

Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larry’s acceleration in m/s2? What is happening to the elevator

171. ## physics

A flat circular coil with 113 turns, a radius of 3.64 10-2 m, and a resistance of 0.524 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate

172. ## Math

Benita has 3 ropes measuring 54 centimeters, 108 centimeters and 189 centimeters. She cuts all of them into equal pieces. The length of each piece is the longest possible length she can cut. What is the length of each piece of cut rope? How many pieces of

173. ## American Govt

How much control does the public, through its elected representatives in Congress, exercise over the bureaucracy?

174. ## Math

Jessica and her mother return from shopping with 14 packages. They park the car in the parking lot, which is 120 meters away from their house. Then they make several trips to bring the packages into their house. Jessica's mother can carry 3 packages at a

175. ## engish

what make the theme of "civil peace" a universal theme

176. ## American Govt

Why does the bureaucracy continue to expand?

177. ## American Govt

Is efficiency the best standard for evaluating bureaucratic performance, or are there other important criteria by which to assess what the federal government does?

178. ## Maths

How many rectangle can be draw with 30cm as perimeter?

179. ## Socials

If in Napoleon Bonaparte's perspective, what was the best form of government did he want and why would this be good for the country(France)? Doing a project where you make a campaign trying to persuade people to vote for you(Napoleon) :) Thanks in advance!

180. ## math

How do I simplify -9-(12-3x)

181. ## geometry easy

The perimeter of equilateral triangle TRY is 9y+45 and TY = 2y+25 . find the perimeter of triagle TRY. The perimeter of a parallelogram ABCD is 66 cm, and DC is twice as long as BC . how long is AB ? 2 QUESTIONS .. ANSWERS PLEASE TELL ME WHAT TO DO

182. ## easy GEOMETRY!!

1.The perimeter of parallelogram QUAD is 10 more than 5 times AU. If QU =26 cm. find AU 2.If diagonals of a rhombus are 10 cm and 24 cm. find the area and perimeter of the rhombus SOlutions pleaseeeeeee

183. ## geometry easy

The perimeter of equilateral triangle TRY is 9y+45 and TY = 2y+25 . find the perimeter of triagle TRY. The perimeter of a parallelogram ABCD is 66 cm, and DC is twice as long as BC . how long is AB ? 2 QUESTIONS .. ANSWERS PLEASE TELL ME WHAT TO DO

184. ## math

If I am in a canoe race and my friend is a half mile ahead of me, if I paddle at 3.4 miles per hour and he paddles at 3miles per hour, when will i catch him?

"ending racial inequality" George W. Bush speech

186. ## geometry triangle

1. can you tell me how to find the area of an equilateral triangle ? its sides are all 8 . . 3. i guess this is a right triangle . . how to find its area and perimeter if one side is missing ? tell me please? i want to know thank you so much

187. ## Math

The total cost of renting a car is a function of the basic charge, insurance, and the number of miles driven. Suppose a compact car costs \$0.10 per mile plus \$30 in basic charges and insurance. A mid-size car costs \$50 in basic charges and insurance plus

188. ## geometry isosceles

Find the altitude, perimeter and area of an isosceles trapezoid whose sides have lengths 10 cm, 20 cm , 10 cm, and 30 cm. how??

189. ## Math

The manager of Pine Town Furniture purchased a new copier for \$28,000. She plans to keep it for four years, at which point she expects to trade the copier in and receive \$6000 credit toward the purchase of a new machine. She is going to use straight-line

190. ## History

How did American debates about foreign policy in the 1790s reflect the beliefs of the political parties? i think it tells poltical parties what to change ,but i need more info.

191. ## science

the differences between amino acids are in the? A: side groups B: hydrogen atoms

192. ## Math

These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?(Please express your answer in scientific notation) 16.32 x 10^6 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2.What is the product of

The consecutive sides of a quadrilateral measure (x-17), (24-x), (3x-40) and (x+1). The perimeter is 42 cm . is the quadrilateral a parallelogram ? Hi please will you help me thakn youu

194. ## math

How do I simplify -(5x+5)-4+8x

195. ## science

the differences between amino acids are in the? A: side groups B: hydrogen atoms

196. ## math

Juan buys 18 meter of wire. He cuts the wire into pieces of 3 meters long.how many pieces of wire dose he cut?

197. ## geometry circle

A 16 cm by 12 cm rectangle is inscribed in a circle.. find the radius of the circle. ~answer

198. ## Math

Order from least to greatest. -4, -3.9, - 2/9, 2/11

199. ## Physics

An automobile is traveling 65mph. Its brakes decelerates at 6.0mps. How long will it takes to stop the car?

200. ## Math

Which of the following is another way to think of 6,300/70=? A.63 tens / 70 tens B.63 tens / 7 tens C.630 tens / 7 tens D.6,300 / 7 tens

201. ## GEOMETRY

A. A regular hexagon with a perimeter of 24 units is inscribed in a circle. Find the radius of the circle. B . Find a relationship between the areas of triangle ADC and parallelogram ABCD this is our assignment for tomorrow . . its geeting late please help

202. ## math

evaluate the expression 6^-2 x 4^0. a) 12 b) 48 c) 1/36 d) 36

203. ## science

Which of the following is NOT a function of proteins? a: act as a main fuel for cells B: control chemical reactions in a cell

204. ## math

A company's weekly profit, in riyals, is modeled by the function P(u)=-0.032u^2+46u-3000. where u is the number of units sold each week. a) the maximum weekly profit b) the loss for week's holiday period, where no units are sold c) the number of units sold

205. ## science

the differences between amino acids are in the? A: side groups B: hydrogen atoms

206. ## Physics

A generator has a square coil consisting of 700 turns. The coil rotates at 78 rad/s in a 0.21-T magnetic field. The peak output of the generator is 120.00 V. What is the length of one side of the coil?

207. ## Civics

What departments can be cut to reduce debt in the government (examples of departments- social security and Medicare or defense and military

208. ## algebra 2 honors

Solve by substitution or elimination 1.) -6=3x-6y 4x=4+5y 2.) r+x= -1 2r-3s=6

209. ## Number Sense

If 1 is added to the numerator and denominator of 5/12, is the new number greater than or less than 5/12?

the differences between amino acids are in the? A: side groups B: hydrogen atoms

211. ## Number Thoery

Jhon received at least 100 flowers from an admirer. When he tried to place 5 flowers in each vase, he found that she had 4 flowers left over.When he tried to place 6 flowers in each vase, he found that she had 3 flowers left over. What is the smallest

the differences between amino acids are in the? A: side groups B: hydrogen atoms

213. ## algebra 2 honors

Solve by substitution or elimination 1.) -6=3x-6y 4x=4+5y 2.) r+x= -1 2r-3s=6

214. ## science

A bungee jumper jumps (with no initial speed) from a tall bridge attached to a light elastic cord (bungee cord) of unstretched length L. The cord first straightens and then extends as the jumper falls. This prevents her from hitting the water! Suppose that

215. ## Unions and Intersections of Sets (Algebra)

Part 1: Answer the following question: In a survey of students about favorite sports, the results include 22 who like tennis, 25 who like football, 9 who like tennis and football, 17 who like tennis and baseball, 20 who like football and baseball, 6 who

216. ## Trigonometry

Find all x such that 0< = x

217. ## science

Consider a double star system under the influence of the gravitational force between the stars. Star 1 has mass m1 = 1.72 × 1031 kg and Star 2 has mass m2 = 1.60 × 1031 kg. Assume that each star undergoes uniform circular motion about the center of mass

218. ## Civics...again

How will cutting these departments impact society transportation, housing and urban development agriculture social security and Medicare Homeland Security?

219. ## Global Economics

RedBall Productions is a new company based in Orem, Utah. RedBall supplies stock images of still photography. Utah's state corporate income tax consists of a flat tax rate of 5% on all corporate income. RedBall Production's taxable income in 2005 was

220. ## science

Find and save a piece of junk mail. What is this piece of mail trying to persuade you to do? Were you at all tempted by the offer? Why or why not? What principles of social psychology does it use to accomplish its goals? How could you use your social

221. ## physics

You are walking along Main street one afternoon. At 1 PM you are walking due east and notice you are 50 meters east of the intersection of Main and Elm streets. You continue to walk due east and 50 seconds later you are 100 meters east of the intersection