# Questions Asked onMarch 15, 2013

1. ## chemistry

what is the IUPAC name for CH3CH2C(CH3)2CH2CH(CH3)2?

2. ## Math for Ms. Sue please! Last math questions!

1. What is the term for data that are grouped closely together? (1 point) outlier linear positive clustering 2. What association would you expect if graphing height and weight? (1 point) positive nonlinear negative none of these 4. What association would

3. ## math

If 96% of Chinese couples have one child (which is female 50% of the time), and the remaining 4% of Chinese couples engage in sex-selective abortion until they have a male child, what is the ratio of females per 100 males among the children (to the nearest

4. ## Physics

A baseball with a mass of 0.15 kilograms collides with a bat at a speed of 40 meters/second. The duration of the collision is 8.0 × 10-3 seconds. The ball moves off with a speed of 50 meters/second in the opposite direction. What is the value of the

5. ## math :(

78/132 = .5909 how do i get the answer here without using calculator? any tips?

6. ## Chemistry

The specfic heat of iron is 0.11cal/g C. The heat of fusion of iron, the heat required to convert iron from a solid to liquid at its melting point, is 63.7cal/g. Iron melts at 1530 C. How much heat must be added to 2g of iron at 25c to completely melt it?

7. ## URGENT!

Ian admits to and corrects bookkeeping mistakes right away. Shin Lee reported a conflict-of-interest issue to her supervisor immediately. Who is acting ethically? A. Neither Ian nor Shin Lee B. Both Ian and Shin Lee C. Ian only D. Shin Lee only

8. ## math Ms. Sue please

3. Which of the following examples would show a negative trend? (1 point) height and weight of students test scores and height of students outside temperature and heating bill none of these Is the answer " test scores and height of students"?

Which of the following would require a cash receipt? A. Credit memo B. Purchase order C. Check D. Refund

10. ## trigonometry

A truck with 48-in.-diameter wheels is traveling at 55 mi/h. Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes: __rad/min How many revolutions per minute do the wheels make?__ rpm

11. ## Who is correct?

Sarah says that overhead includes utility, rent, and salary costs. Jonas says that overhead includes liabilities and accounts payable.

12. ## microeconomics

Market demand is given as QD = 200 – 3P. Market supply is given as QS = 2P + 100. Each identical firm has MC = 0.5Q and ATC = 0.25Q. What quantity of output will a typical firm produce? a.10 b.20 c.30 d.40 Market demand is given as QD = 200 – 3P.

13. ## financial

why does direct and indirect costs meet the cost classication

14. ## science

With action-reaction forces, _____. A. the action force is created first B. the reaction force is created first C. the forces are created at the same time D. both forces already existed I think it is D..?

15. ## ECONOMICS

Suppose your college charges you separately for tuition and for room and board. What is a cost of attending college that is not an opportunity cost? What is an explicit opportunity cost of attending college? What is an implicit opportunity cost of

16. ## math

a pumpkin pie costs \$12.55 at a bakery. if the pie has a diameter of 12 inch. what is the cost per square inch of the pie?

17. ## english

Click on the box below to choose the correct sentence pattern for the sentence below. Are there any more cookies in the jar?

18. ## Algebra

The recommended daily intake (RDI) of a nutritional supplement for a certain age group is 600 mg/day. Actually, supplement needs vary from person to person. Write an absolute values inequality to express the RDI plus or minus 50 mg and solve it.

19. ## Math computations

An examination is normally distributed with a mean score of 77 and a deviation of 6. find the percent of individuals scoring as indicated below: between 71-83 between 83-65 above 89 less than 65 between 77 and 65

20. ## Algebra 2

A box with no top is to be constructed from a piece of cardboard whose length measures 12 inches more than its width. the box is formed by cutting squares that measures 4 inches on each sides from 4 corners and then folding up the sides. If the volume of

21. ## Chemistry

How many grams of methanol could be vaporized by the addition of 22.45kJ of heat?

22. ## math

How many positive integers, a, are there such that 2027 divided by a leaves a remainder of 7?

What are some differences between the diary of Anne frank and the hitch-hiker I put that in the diary if Anne frank there is no foreshadowing and they have different personalities and that hitch hiker is a thriller story what else ca I write?

24. ## statistics

Suppose that the heights of female adults in the US are normally distributed with a mean (µ) of 65.4 inches and a standard deviation (σ) of 2.8 inches. Let X denote the height of a randomly chosen adult female. Find the probability that X is between 66

25. ## History

What 1968 event caused U.S. military leaders to be concerned that a quick end to the war was not possible? A.) The Students for a Democratic Society was founded. B.) Eugene McCarthy made a strong showing in the New Hampshire primary. C.) President Johnson

26. ## AP Physics B

An object is 21 cm in front of a diverging lens that has a focal length of -10 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 1.5?

27. ## Physics

A 1.0cm wide diffraction grating has 1000slits. It is illuminated by light of wavelength 550nm. What are the angles of the first two diffraction orders?

28. ## Statistics

A large number of children were surveyed. The table below shows the distribution of the time they spent watching TV in the week before the survey. Intervals include the left endpoint but not the right. You can assume that the times are uniformly

29. ## chemistry

Calculate the concentrations of all species in a 0.690 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8.

30. ## math

Suppose you invest \$2250 in a CD that earns 3% APR and is compounded quarterly. The CD matures in 2 years. How much will this CD be worth at maturity?

31. ## math ALG 2!scientific notations helpp

Write the following value in scientific notation. 23,000,000 Write the following value in scientific notation. 7,400,000 Write the following value in scientific notation. 0.00000021 Write the following value in scientific notation. 0.00003165 Which value

32. ## njit

please life saver i am taking a quiz now can some one help me with this pleeeeeeeaaaaaaaaassssssseeee Calculate the pH of 0.175 M phosphoric acid (H3PO4, a triprotic acid). Ka1 = 7.5 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13.

33. ## Applied Calculus

A truck gets 800/x miles per gallon (mpg) when driven at a constant speed of x mph, where 40 ≤ x ≤ 80. If the price of fuel is \$2.80/gal and the driver is paid \$19/hr, at what speed is it most economical for the trucker to drive? (Round your answer to

34. ## math

completing the square 2m^2-m-15=0 using the quadratic formula 2y^2-3y-6=0

35. ## math

Suppose you want to row your boat across a 3-mile-wide river. You can row at a speed of 2.5 mi/h. The current is flowing south at a rate of 1.4 mi/h. At what angle upstream should you aim your boat so that is ends up going straight across?

36. ## Algebra

1/5x - 3 = 1/2x - 1/5x What's the ?

37. ## ECONOMICS

A senator wants to raise tax revenues and make workers better off. A staff member proposes raising the payroll tax paid by firms and using part of the extra revenues to reduce the payroll tax paid by workers. Would this strategy achieve the senator's goal?

38. ## Chem

If you used the 2600 you expend in energy in one day to heat 7.0×104 of water at 20, what would be its new temperature?

39. ## mathematic

find the ecentricity and coordinates of foci of the ellipse 16x2 + 9y2= 144

40. ## english 4

Her favorite pastime is entertaining friends. noun function

41. ## Office Finances

Which of the following would require a cash receipt? A. Credit memo B. Purchase order C. Check D. Refund

42. ## Algebra

solve for d. sq root d^2-11=5 A. 4,-4 B. 5,-5 C. 5,6 D. 6,-6 I think it is A....?

43. ## math ALG 2!scientific notations helpp

Write the following value in standard notation. 4.25 x 106 Write the following value in standard notation. 3.89 x 104 Write the following value in standard notation. 3.14 x 10-5 Write the following value in standard notation. 2 x 10-6

44. ## economics

what is structural unemployment?

45. ## Algebra

Abe and Sal left at the same time. They traveled in opposite directions. Sal traveled 50mph faster than Abe. After four hours, they were 400 miles apart. Find Abe's speed.

46. ## Social studies

How did the geography of the southern colonist affect what they did for a living?

47. ## trig

A pole is braced with a wire from the top of a pole to the ground. The wire is 100 feet long and makes an angle of 40° with the ground. Find the height of the pole.

48. ## math 0511

Suppose G={x E N : x> 1} and H ={-3;-2; -1; 0; 1; 2} which statement is true? G=[1;

49. ## Physical science

How to draw 5 kg block on an inclined plane that isat 40 degrees to the horizontal?

50. ## Math

Optimization Problem A right circular cylindrical can of volume 128tπ cm^3 is to be manufactured by a company to store their newest kind of soup. They want to minimize the surface area of the can to keep costs down. What are the dimensions of the can with

51. ## math

The tolerance in inches for the diameter of a piston is described by the absolute value inequality |d-5| , or equal to 0.01. What is the desired diameter of the piston? By how much can the actual diamer of the piston vary from the desired diameter?

52. ## Algebra

Which is the extraneous solution of -x=sq root of 2x+15? A. -5 B. -3 C. 3 D. 5 I think it is D...?

53. ## math

How do I measure 5.25% of a 6% bleach for 1 gallon?

54. ## Math

A company invests \$15,000.00 in an account that compounds interest annually. After two years, the account is worth \$16,099.44. Use the function in which r is the annual interest rate, P is the principal, and A is the amount of money after t years. What is

can I receive feedback on this one? (all caps because teacher recommended) MIDLAND MAN WHO KILLED HIS EX-WIFE IN A TRAFFIC CRASH HAS COURT APPEAL REJECTED. 57-YEAR OLD LEWIS HENDERSON APPEALED HIS CONVICTION BY SAYING THAT HE HAD UNPRODUCTIVE COUNSEL AND

56. ## College algebra

Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=

57. ## UMD

A new car that is a gas- and electric-powered hybrid has recently hit the market. The distance traveled on one gallon of fuel follows an exponential distributed with a mean of 63 miles. One car is selected at random and is driven on one gallon of gas. What

58. ## Statistics

A large number of children were surveyed. The table below shows the distribution of the time they spent watching TV in the week before the survey. Intervals include the left endpoint but not the right. You can assume that the times are uniformly

59. ## College algebra!

For the linear function f(x) = 5x + 3 (a) Determine the slope and y-intercept (b) Use the slope and y-intercept to graph the linear function. (c) Determine the average rate of change of the function (d) Determine whether the linear function is increasing,

60. ## math

If a and b are parallel lines and m 3 = 128º, what is the measure of 8? 134º 54º 52º 49º

61. ## STATS

If Ho: μ = 50 and Ha: mu. = 59 and s = 10 what is αlpha if x exceeds 56for n=25

62. ## physics

A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 91.9 m/s2 for 1.53 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude

63. ## algebra

a farmer has both cickens and cattle.These animals have a total of 40 heads and 140 feet.How many chicken and how many cattle has this farmer

64. ## French review

Can someone please check if all of this is correct in french? Is everything conjugated correctly? Its in the imparfait. Quand j'etais jeune, J'ai la cheveux blonds. J'ai les yeux bleus. J'etais un petit diable. J'ai les cheveux courts. J'etais grand.

65. ## Statistics

A class has 3 sections. Here is a summary of the scores on the final exam. Average SD Number of Students Section 1 68 9 20 Section 2 75 9 25 Section 3 60 9 32 Find the average score of all the students in the class.

66. ## nonlinear algebra

Use prime factorization to simplify the following square root leave as exact answer. How do you find the prime factors of this problem? 112 square root

67. ## Economics

How do I figure out the principal in the equation principal X rate X time? I am borrowing \$255,920.00 which is the total amount of the home (\$319,900.00) minus \$63,980.00 (20%I put down). I am trying to figure out what my monthly payment on the loan which

68. ## college physics

if a 12kg ball rolls down a ramp at 3 m/s and crashes into a pillow and it takes 0.65 s to stop the ball what is the momentum of the ball and the force exerted by the pillow? I would like to know the formula on how to figure this out.

69. ## math

Scramble the following letters into a word P,E,S,I,A,R Any guesses?

71. ## math

How do you write a learning assessment system assignment

72. ## math

how to solve this need to change to equivalent divisio with a whole number 0.4/9.16

73. ## College algebra

Determine without graphing, whether the given function has a maximum value and then find the value. f(x)=3x^2+18x-6

74. ## economics

Examples of structural unemployment

75. ## Math

Erick solved the problem (9 x 5 ) + 4= 7y (45) + 4= 7y 49 = 7y 42 = y Explain his mistake.

76. ## chemistry

What is the amount of H2O that can be produced by combining 89.7 of each reactant in the following equation: 4NH3(g) + 5O2 (g)----> 4NO(g) + 6 H2O(g)

77. ## Determine without graphing

Determine without graphing, whether the given function has a maximum value and then find the value. f(x)=3x^2+30x-1

78. ## math

a truck goes from a stop to 60 km/hr brakes for a light and stops in a 8 seconds what is the rate of deceleration?

79. ## calculus

write a simplified algebraic expression in terms of a and h to estimate the instantaneous rate of change of 8t(t+2)

80. ## math

The community is having a book sale to raise money for a new computer. The library sells each book for \$4.00. complete the table, where b represents the number of books sold. How much money will the library earn if b=44? b 4b 40 160 44 ? 50 200 I don't

81. ## physics

A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 15.5 cm in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a θ = 19.0° angle with the vertical as indicated, what

82. ## Chemistry

2A(aq)-> B(aq) +C(aq) Initial concentration of A and B is 1.00 M, with no C. Kc = 0.200 find equilibrium concentrations

I will give the questions and my answers. Someone check it please. Read the passage below and answer the questions that follow. To the Top “Great works are performed, not by strength, but by perseverance.” -Samuel Johnson Have you ever wanted to give

84. ## math

Find the smallest values for a and b so that 21 base a equals 25 base b.

85. ## Math

Two numbers differ by 9. 4 times the smaller is 5 more then twice the larger. Find the numbers.

86. ## Find the following inequality

Find the following inequality. 15(x^2-1)>16x

87. ## Math

Peter solved this equation 6 x y = 490 - 4 6 x y = 486 y = 492 Explain his mistake.

88. ## Algebra 1

Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third

89. ## math

what expression can be used to represent the phrase "3 more than 2 times the number of minutes, m"? a.3m+2 b.2m+3 c.m+3x2 d.2m-3 I think it may be A?

90. ## Math

steps needed to solve one step mixed number g+9 3/4=15 1/2

Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third

92. ## Language Arts

4. Identify the subordinate clause in the following sentence. While I am not entirely sure, Bryant was a gold medalist in the shot put last year. A. While I am not entirely sure B. not entirely sure C. Bryant was a gold medalist D. Bryant was a gold

93. ## science

10 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.1 M C2H3O2-. What is the pH of the resulting solution?

94. ## math

A particular power boat travelling at V0 km/h when its power is turned off will have its speed V given by V(t) = V0 × 10-0.18t where t is the time in seconds since the engine was turned off. If this boat was travelling at 50km/h before powering down,

95. ## Language Arts

Identify the sentence with the independent clause underlined. A. Because she wanted to win, Lanie practiced hard every day. B. Although Cale is fairly sure about the next move, the team decides to follow Manny’s suggestion and go for the touchdown. C.

A motorcycle has a constant acceleration of 2.13 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a) 24.0 to 34.0 m/s, and (b) 54.0 to 64.0 m/s

A principal of \$2500 is invested,part at 8% per annum and the rest at 12% per annum. In a year, the 8% investment interest was doubled the 12% investment interest. How much invested at each rate? Express in the form Ax+By=C

98. ## math

How do I measure 5.25% of a 6% bleach for 1 gallon?

99. ## Statistics

A quiz consists of 10 multiple choice questions. Each question is marked either “right” or “wrong.” Each right answer gets 5 points, and 1 point is taken off for each wrong answer. The correlation between the number of right answers and the number

100. ## chem 126

Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH < 8.3) and pink in the basic form (pH > 10.0). It is a weak acid with a pKa of 8.7. What is the ratio of the conjugate base concentration to the acid concentration, that

101. ## Lang. Arts

Imagine that Emily Costello has written a follow-up article about Bethany. It is called “Still Feeling Complete.” Based on what you read in “A Year of Living Bravely,” and on the title of the follow-up article, what do you think it might be about?

102. ## math

exponent law question: Simplify the following exponents. 1. (16)(2^(x+2)) 2. ((ab)^(2x+y))/(a^(x)b^(y))

103. ## Chemistry

4.34 = 0.391^2 / 0.125 / [SO2]^2 What is the concentration of SO2?

104. ## Quantum Physics

I.Provide a unitary that maps |+> to |1> and |-> to |0> . Enter 0 in all boxes if no such unitary exists. (In this case, you have to enter 0 explicitly. Blanks are not accepted.) a b c d II.Provide a unitary that maps cos (30) |0> + sin (30) |1> to

105. ## Math

Evaluate the following indefinite integrals. Can you show all the steps please! a) ∫xe^x^2+10 dx b) ∫x-2/x-4 dx

106. ## math

4 In e= In (ã(3))/(x)-4 In e Solve the equations by finding the exact solution.

107. ## math

Mr Smith is a farmer. He stores his hay in a shed the shape of a cone. The base has a radius of 30 ft and it is 40 ft. tall. How much hay can he fit in the shed? Leave th answer in terms of pie.( I will use ^ as my pie symbol here) I did v=1/3 BH v=1/3^r2h

108. ## economics

quantity total cost what's the marginal cost? 0 8 2 9 4 10 6 11 8 13 10 19 12 27 14 37

109. ## Econ- labor union members

I am studying labor unions in my Econ class and would like to ask a member a few questions:) Which labor union do you belong to? How long have you been a member? What do you see as the advantages of belonging to a union? What are the disadvantages? Thanks!

111. ## ECE 101

For this assignment, you are asked to design a Plan-Do-Review activity. Be sure to describe in detail each stage of the process (student involvement in the planning, what students would actually do, and what specific questions you would ask during the

112. ## Chemistry

Solid Na2SO4 is added to a solution which is 0.012 M in Pb(NO3)2 and 0.048 M in AgNO3. Assume the volume remains constant. Ksp = 2.0 10-8 for PbSO4 and Ksp = 1.2 10-5 for Ag2SO4. (a) Which compound precipitates first? (b) What is the concentration of the

113. ## Plz help math

3n/(n2 -7n + 10) - 2n/(n2-8n+15)

114. ## math

What shape would be classified as A=lw?

115. ## math

Prove. 2^n + 2^n = 2^(n+1)

116. ## chemistry

what mass of a sample of gold requires 1.75 kJ to change its temperature from 28.2 degrees Celsius to 89.5 degrees Celsius?

117. ## chemistry

How do you sole this problem: how many grams of CaCl2 are needed to prepare 7.25 L of .015M solution?

118. ## Math

How would you label the answer to this problem? What is the area of a rectangle with a length of 3 ft by a width of 2 ft? Select one: a. 6 b. 6 ft. c. 6 ft.2

119. ## math 7

how many different ways can you choose 3 vowels out of the box, if there are 5 vowels in the box and the order does NOT matter? a. 10 b. 15 c. 30 d. 60 D?

120. ## Science

What is the average summer temperature in the desert biome? Select one: a. 38 degrees celcius b. 48 degrees celcius c. 58 degrees celcius Question 2 Not yet answered Marked out of 1.00 Flag question Question text What is the average winter temperature in

121. ## Calculus

given that f, g, and h are differentiable functions and f(g(h(x))) = x, what is h'(x) in terms of f, f', g, g', and h? I have on clue on how to even start it. please help . thank you.

122. ## English

1. On the documentary Sicko,Michael Moore spoke out the truth about our healthcare system. 2. In the documentary Sicko,Michael Moore spoke out the truth about our healthcare system. Which one would be correct? Using on or in?

123. ## physics

During takeoff, an airplane climbs with a speed of 140 m/s at an angle of 42 degrees above the horizontal. The speed and direction of the airplane constitute a vector quantity known as the velocity. The sun is shining directly overhead. How fast is the

124. ## maths-areas

in triangle ABC P, Q AND R ARE the mid points of side AB, BC, CA.prove that area of parallelogram APQR=( 1/2)* area of triangle[ABC]

List at least four sources you will use to obtain information about a firm's strengths, weakness, opportunities, and threats

126. ## consumers math

Jon put 1000\$ into each of two different simple interest savings accounts for one year . The total intrerest earned was 5\$. What could the interest rate have been for each account ?

127. ## !!!!!! what is it-- math

5!. i know the answer is 120, nbut what is th ! thanks in advance.

128. ## ECONOMICS

Name two types of market failure (with examples). Explain why each may cause market outcomes to be inefficient

129. ## math

HOW THE YOU WORK THIS PROBLEM?WHAT PRECENT OF 3.5 IS 7.2

130. ## Math

Use multiplication, division, addition and subtraction and at least one set of parentheses to write an expression that simplifies to 7, 13, or 17. Do your work step by step and explain each step as you simplify the expression. Demonstrate the consequences

131. ## MATH (Algebra)

All-mixed-up nut shop sells mix consisting of cashews and pistachios. how many pounds of cashews, which sell for \$7 per pound , should be mixed with 4 pounds of pistachios which sell for \$4 per pound to get a mix of \$5 per pound?

132. ## Pre-Calculus

How would I write this in exponential form? log(3)1/27= -3

133. ## science

If the acceleration due to gravity on the earth is 9.8 , what is the acceleration due to gravity on Rams?

134. ## Gramar

a 4 hour tour averaged 3 miles per hour. if the average rate was 2.5 miles per hour for the first 3 hours what was the average rate for the last hour

135. ## physics

Bernie whose mass is 70 kg leaves a ski jump

136. ## physics

A 5.05kg sits on a ramp that is inclined at 36.5 degrees above horizontal.The coefficient of kinetic friction between box and ramp is mu k= 0.25. What horizontal force is required to move the box up the incline with a constsant acceleration of 4.3m/s^2?

137. ## english

hey everybody!I will make a presentation in the class few days later.Anyone watched The others(2001)?I got a question.Who is the woman in distress in the film and why is she in distress? thanks..

138. ## Spanish

Cuando tenía catorce años, fui a la Inglaterra y Gales con mi equipo del fútbol de mi escuela secundaria. Fuimos a la Inglaterra porque queríamos jugar en otro país contra los equipos extranjeros y ver las vistas hermosas. La idea de hacer este viaje

139. ## Language arts

Einstein was however also publishing papers in physics. How To create this sentence? a.was, however, also b.was however, also c. was, however also d.no error I chose b

140. ## Chemistry

At the equivalence point in a titration you know the volume (x mL) of a standard solution of acid (2.5 M) that has been added to a known volume base (y mL). show how you can determine the concentration of the base.? Explain

141. ## Math

Randy throw a base ball straight upwards, releasing it 6 ft above the round, and giving it an initial speed of v = 128 ft/sec. Use the formula h = -16t^2 + vt + 6 ft( where t = time , h = height ) to find the maximum height of the ball to reach this

142. ## chem

2NH3+ 2Na---) 2NaNH2+1H2 assuming that you start with 25.7 g of ammonia gas and 22.4 g of sodium metal and asuming that the reaction goes to completion what is the mass in grams of NaNH2

asked by shane URGENT pls help thank u
143. ## Separation process

Oil used to absorb benzene from gas is to be stripped with steam at P = 1atm to recover the benzene.Equlibrium at the operating temperature is approximated using Henry's Law.When the oil contains 10%mol of benzene,the oil's partial pressure is 5.07kPa.The

144. ## science

Which of the following combinations of atomic orbitals can combine to form sigma bonds? s-s s-p p-p hybrid orbital - hybrid orbital hybrid orbital - s hybrid orbital - p

145. ## math

1)a number of two digits is such that the digits is 11 and the number is 27 greater than the number obtained by reversing the digits. a)Find the number b)State the advantages of the mean as an average 2) use logarithm tables to evaluate to five significant

146. ## College algebra

Find the value of f(x) = -3x^2 + 12x-8

147. ## maths-circles

a circle having a centre O has a triangle PQS inside it with the base QP is not on centre O. PT and QT are two tangents from an exterior point T (S, O and T are linear points - lie in one line ) it is given that angle ptq = 25 deg . find angle PSQ and OPQ

148. ## chemistry

draw the conformational structures is 2-methylpentane?

149. ## Science (chemistry)

Pls help.. Q: prepare a table of value for acid-base titration using 26.40cm^3 as end point

150. ## Calculus

The area bounded by the curve y = 2x^2-x^3 and line y=0 is rotated around the y-axis. The volume of the resulting structure can be expressed as V = a(pi)/b, where a and b are coprime positive integers. What is the value of a + b?

151. ## economics

. If 96% of Chinese couples have one child (which is female 50% of the time), and the remaining 4% of Chinese couples engage in sex-selective abortion until they have a male child, what is the ratio of females per 100 males among the children (to the

152. ## chemistry

a 225.0g sample of an unknown, silver, pure metal was heated to 95.5 degrees Celsius and then put into 150.50g of water at 22.5 degree Celsius. the water was heated by the hot metal to a temp. of 31.4 degree Celsius. what is the specific heat of the metal

153. ## question

Why did the British exercised restraint in their efforts to defeat the colonies?

154. ## English

What can I do to fix this sentence? Fred said the distributor cap on my car is cracked

155. ## French Help

Can someone look over this french story and tell me if it all makes sense? Quand j'étais jeune, j'ai eu la lumière cheveux blonds. J'ai eu les yeux bleus. J'étais un petit diable. J'ai eu les cheveux courts. J'étais grand. J'ai aimé le spectacle

156. ## Math

There are 9 boys and 12 girls at a party,everyone is wearing a pair of shoes.How many shoes are there

157. ## Foods and nutrition

Signs and symptoms of arsenic toxicity in water

158. ## math

The probability that it will take 5 or more flips of a fair coin before it lands on heads can be written as ab, where a and b are coprime positive integers. Find a+b.

159. ## algebra

How many distinct prime factors does 100100 have?

160. ## math

What is the sum of all the possible values of a for which 25x2+(a−15)x+9 has exactly one distinct real root?

161. ## English

By the time he was twelve years old, Mozart had compose an entire opera. Is this correct?

163. ## Ms.Sue Help

two numbers differ by 9.Four times the smaller is 5 more than twice the larger.Find the numbers.

164. ## math

What is the value of 232?

165. ## maths-circles

a circle with centre O, secants AB and EF intersect each other at point C in the exterior of the circle . prove that measure of angle ACE=(1/2)*{measure of arcAE)-measure of arc BF}

166. ## Physics 11th grade 'Heat' .

Finishing his ginger ale, Ramesh stands at party holding his insulated foam cup that has nothing in it but 0.100 kg of ice at 0℃. 1) In sentence above, How much more heat must be gained to raise the temperature of the melted ice to room temperature of

167. ## MATH

110% OF \$8.50

168. ## CHEM

CALCULATE THE VOL OF 2.5MOL OF OXYGEN.

169. ## psychology

How has psychology been impacted by the philosophical and religious theories of child rearing?

170. ## history

word bank: nullification, caucus, secede, suffrage, spoils system, pet bank, nomination convention, states' rights Choosing presidential candidates became more democratic when political parties began to hold __________________ that included delegates from

171. ## Statistics

The eggs of a species of bird have an average diameter of 23 mm and an SD of 0.45 mm. The weights of the chicks that hatch from these eggs have an average of 6 grams and an SD of 0.5 grams. The correlation between the two variables is 0.75 and the scatter

172. ## math ALG 2!scientific notations helpp

1.)Write the following value in scientific notation. 23,000,000 2.)Write the following value in scientific notation. 7,400,000 3.)Write the following value in scientific notation. 0.00000021 4.)Write the following value in scientific notation. 0.00003165

173. ## physics

0.30-kg block is sliding on a smooth horizontal surface at 2.5 m/s, heading towards a light spring that is in equilibrium (not stretched or compressed). The spring constant is 3000 N/m. What is the total kinetic energy in the system in Joules?

174. ## Physics

What minimum sized balloon would you have to fill in order to be able to be lifted into the air? Take your mass to be 100 kilograms and the temperature of the outside air to be 20 degrees C. Neglect the mass of the balloon rubber and basket and assume that