# Questions Asked in July 2016

## Most Popular Questions of July 2016

1. ### Physics

Question: A Toyota car travelled at the rate of 70 km/hour leaves the house 2 hours after a Kia car has left and overtakes it in 5 hours. at what rate was Kia car travelling? What's the Formula pls? Thanks

asked by John on July 21, 2016
2. ### Math

There are 12 more toy cars than toy trucks in a toy box with a total of 38 toy cars and trucks. How many toy trucks are in the toy box?

asked by Jane on July 5, 2016
3. ### chemistry

If potassium chlorate is 80 percent pure ,then 48gram of oxygen would produced from how many gram of potassiumchlorate

asked by biswamohan on July 5, 2016
4. ### life Orientation

Define the concept"risk behsviour"and explain why it is important for teenagers to investigate and be knowledgeable about it

asked by happiness on July 28, 2016
5. ### Statistics

A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if he wishes the estimate to be within four percentage points with 99 ​%

asked by Zechariah on July 6, 2016
6. ### Physics

A body of volume hundred centimetre cube is immersed completely in water contained in a jar containing water. the weight of the jar and the water before immersion was 700 grams. After immersion weight of the jar and the water will be

asked by Vidhi on July 27, 2016
7. ### math

what is the average of 14 17 22 27

asked by Anonymous on July 31, 2016
8. ### Chemistry

A CaCl2 solution is given to increase blood levels of calcium. If a patient receives 5.0 mL of a 5.0 % (m/v) CaCl2 solution, how many grams of CaCl2 were given?

asked by Ava on July 17, 2016
9. ### General Mathematics

A jeepney ride costs P8.00 for the first 4 km and each additional integer km adds P 1.50 to the fare. Use a piecewise function to represent the jeepney fare in term of the distance d in km.

asked by Cheezy on July 7, 2016
10. ### Physical Science

A 100-g chunk of 72 ∘C iron is dropped into a cavity in a very large block of ice at 0∘C. What is the mass of ice that melts. (The specific heat capacity of iron is 0.11 cal/g⋅∘C.).

asked by Hannah on July 4, 2016
11. ### math

A lawyer drives from her home, located 6 miles east and 10 miles north of the town courthouse, to her office, located 4 miles west and 14 miles south of the courthouse. Find the distance between the lawyer's home and her office. I know the answer is 26

asked by Carly on July 19, 2016
12. ### chemistry

Solubility (g/100gH2O) Substance 20∘C 50∘C KCl 34.0 42.6 NaNO3 88.0 114.0 C12H22O11 (sugar) 203.9 260.4 Using the above table, determine whether each of the following solutions will be saturated or unsaturated at 50 ∘C. 1.) Adding 19.7 g KCl to 35.0

asked by maria on July 17, 2016
13. ### algebra

1. The geometric mean between the first two terms in a geometric sequence is 32. If the third term is 4, find the first term. 2. Insert a geometric mean between k and 1/k. 3. If 2 and 3 are two geometric means between m and n, fond the values of m and n.

asked by sylvia on July 16, 2016
14. ### math

find the value of k so that k-3,k+1,4k-2 form a geometric sequence.

asked by peejhay on July 13, 2016
15. ### Economics

Suppose you are a producer of friendship bracelets. How would the following events affect your/the market's willingness and ability supply friendships bracelets? Match the event on the left to the proper determinant on the right. 1. The price of friendship

16. ### Chemistry

Write chemical formulas for the compounds formed by the following positive and negative ions: Ba2+ and NO3-, Al3+ and Co3, and K+ and PO43-

asked by Kelly on July 30, 2016
17. ### Chem

Write a chemical formula. . . Ca2+ and S2-

asked by David on July 30, 2016
18. ### Chemistry

0.110 M in formic acid and 5.5×10−2 M in hypochlorous acid . How to find pH

asked by Sandov on July 16, 2016
19. ### chemistry

Calculate number of electrons present in 9.5g of PO4^3-

asked by vivek pathak on July 3, 2016
20. ### N.E.S. math

Add.reduce the sum to lowest terms whenever possible 4/10+2/10+2/10

asked by Kendrick on July 18, 2016
21. ### math

it takes raiz 30 minute to mark a peper,razi only takes 25 minutes to mark a peper,if they both start marking paper at 11;00am what is the first time they will finish marking paper at same time?

asked by anam on July 21, 2016
22. ### Chem

Write a balanced equation for: 1. beta decay of iodine-138 2. capture of an electron by cadmium-104

asked by Valentina on July 21, 2016
23. ### chemistry

Nylon 88 is made from the monomers H2N(CH2)8NH2  and  HOOC(CH2)6COOH.  So, would you characterize nylon 88 as rather an addition or a condensation polymer? Please explain your answer

asked by Chem on July 24, 2016
24. ### Chemistry

For two questions below, first write and balance the equation for the chemical reaction.  Please, also review the material in Chapter 8, if you will feel you might need it in order to answer the questions.  Next, please answer the following questions:

asked by Chem&Society on July 20, 2016
25. ### Chemistry

Ammonium phosphate and nickel(II) nitrate solutions are mixed, what precipitates out?

asked by Anonymous on July 1, 2016

You've arrived at the Pecan Shellers conference—your first networking opportunity. Naturally, you're feeling nervous, but to avoid seeming insecure or uncertain, you've decided to A. square your shoulders before entering the room. B. hold an empowered

asked by Queen B on July 23, 2016
27. ### Physics

an empty rd bottle weighs 60 grams but weighs 120 gram when completely filled with water when the bottle is completely with an unknown liquid it weighs 90 gram what will be the volume of the rd bottle

asked by Rayan on July 19, 2016
28. ### Chem

Write the two balanced equations, one for the incomplete combustion of methane (to form carbon monoxide and water vapor), and another one for the complete combustion of methane (forming carbon dioxide and whatever vapor). What are the conditions, at which

asked by Valentina on July 21, 2016
29. ### Chemistry

The atmosphere contains about 5.2 x1015 t of air.  What mass in metric tons of carbon dioxide is in the atmosphere if the concentration of CO2 is 395 ppm?

asked by Chem&Society on July 20, 2016
30. ### chemistry

What volume of 0.10 M NaOH can be prepared from 250. mL of 0.30 M NaOH? A) 0.075 L B) 0.25 L C) 0.75 L D) 0.083 L E) 750 L

asked by maria on July 15, 2016
31. ### Physics

In each cycle of its operation, a heat engine expels 2400 J of energy and performs 1800 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle? (b) Find the thermal efficiency of the engine.

asked by Theaaaa03 on July 20, 2016
32. ### Chemistry

The reaction 2NO (g) + 2H2 -> N2 (g) + 2H2O (g) was found to follow the rate law, rate = k[NO]^2[H2]. By what factor will the rate of reaction increase when the pressure of NO gas is increased from 2.0 atm to 3.0 atm? Assume all other conditions are held

asked by Mikey on July 13, 2016
33. ### Math

Tia is investing \$2500 that she would like to grow to \$6000 in 10 years. At what annual interest rate, compounded quarterly, must Tia invest her money? Round your answer to two decimal places.

34. ### maths

In a graduating class with the same number of boys and girls, 1/8 of the girls and 5/6 of the boys are honor students. What part of the class consists of boys who are not honor students

asked by athaulla on July 27, 2016
35. ### Maths

Prove that CosB-cosA/cosA+cosB=tanA+B/2tanA-B/2

asked by Yash Rah on July 5, 2016
36. ### Economics

1. Which of the following is the best example of a public good? A. Highway system B. Shopping mall C. Country club D. Movie theater 2. Which of the following is a characteristic of a public good? A. the private sector could provide it more efficiently B.

asked by Clark on July 5, 2016
37. ### Pre-Cal

Find sin 2x, cos 2x, and tan 2x from the given information. . sin x = 8/17, x in Quadrant I 1). sin 2x =________. 2). cos 2x =________. 3). tan 2x =________. . sin x = -5/13, x in Quadrant III 1). sin 2x =________. 2). cos 2x =________. 3). tan 2x

asked by Amber on July 7, 2016
38. ### statistics

in a certain college 33% of the physics majors belong to ethnic minorities. if 8 students are selected at random from the physics majors what is the probability that more than 5 belong to an ethnic minority

asked by bernie on July 30, 2016
39. ### math

Solve the following problems related to automobile insurance. Jerry Adams normally pays \$875 for bodily injury and property damage insurance. His insurance company increases premiums by 150% for 1 accident, 200% for 2-3 accidents, and 250% for 4 accidents.

asked by C on July 4, 2016
40. ### math

Compute the following costs of services problems. Hourly rate of labor = \$12.00 Duration of job = 3 1/2 hours Overhead rate = 66 2/3% Price of parts = \$112.50 Find total cost of job. \$

asked by C on July 1, 2016
41. ### Economics

1. According to the data table below, what is the unemployment rate?: Total Population: 1,500 Population under 16 or institutionalised: 360 Not in the labor force: 450 Unemployed: 69 Workers with part-time work who want full-time: 30 A. 10% B. 11% C. 8.4%

asked by Wesley on July 13, 2016
42. ### Physics

If you weigh 670 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 15.0 km ? Take the mass of the sun to be ms = 1.99×1030 kg , the gravitational constant to be G = 6.67×10−11

asked by Ane on July 22, 2016
43. ### Pre-Algebra

Identify the underlined place in 83.5851. Then round the number to that place. A. thousandths; 83.58 B. hundredths; 83.59 C. hundredths; 83.58 D. thousandths; 83.59 A?

44. ### chemistry

When magnesium metal and an aqueous solution of hydrochloric acid combine, they produce an aqueous solution of magnesium chloride and hydrogen gas. Using the equation, Mg (s) + 2HCl (aq) Imported Asset MgCl2 (aq) + H2 (g), if 72.9 g of Mg and 146.0 g of

asked by Anonymous on July 11, 2016
45. ### maths

In a competition, 5 points were awarded for each game won and 2 points were deducted for each game lost.A pupil attempted 15 games and got 54 points.How many games did the pupil win?

asked by yussra on July 26, 2016

Identify the number of independent and subordinate clauses in the following group of words. When Janine does volunteer work, she feels a sense of joy and fulfillment A. one independent clause only B. one independent clause and one subordinate clause (MY

asked by Nikki on July 12, 2016
47. ### science

the number of moles of H2O2 required to completely react with 400ml of 0.5N KMnO4 in acidic medium are

asked by vijendra on July 6, 2016
48. ### Microsoft word

Suppose you want to delete an existing file from within Word. What would you do? A. Open the file in Word, click on Save As, and save the file to the Recycle Bin. B. Click on the File button, choose Save As, find the file, right click on the file, and

asked by Daniela on July 17, 2016
49. ### math

Polygon MNOPQ is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image M′N′O′P′Q′. The coordinates of point M are (2, 4), and the coordinates of point N are (3, 5).The slope of MN is

asked by kika on July 6, 2016
50. ### Math

(4,?) is on the line y=2x+3. Find the other half of the coordinate

asked by Jarret on July 8, 2016
51. ### CHEMISTRY

A solution of a metal carbonate M2CO3, was prepared by dissolving 7.46 g of the anhydrous solid in water to give 1000cm^3 of solution. 25.0cm^3 of this solution reacted with 27.0cm^3 of 0.100 mol/dm^3 hydrochloric acid. Calculate the relative formula mass

asked by DAVID on July 9, 2016
52. ### Physics

If a spring has a stiffness of 950nm-1, what work will be done in extending the spring by 60mm?

asked by Blessing on July 18, 2016
53. ### Math

Pen has 1/2 cup and 1/8 cup measuring cups. What are two ways he could measure out 1 3/4 cups of flour? Plz help thanks!

asked by Pam on July 5, 2016
54. ### Math

Which statement best describes the effect of replacing the function f(x) = 2x − 2 with the function g(x) = 2x + 3? The graph shifts 1 units left. The graph shifts 5 units left. The graph shifts 1 unit right. The graph shifts 3 units right. Plz help

asked by layla on July 26, 2016
55. ### Physics

Two lead spheres at the same temperature have radii in the ratio 1:2.what is the ratio of their heat capacities

asked by Vaishnavi on July 20, 2016
56. ### Chemistry

I may need this broken down step by step to understand this problem thanks. A 20.0% by mass solution of phosphoric acid (H3PO4) in water has a density of 1.114 g/ml at 20℃. What is the molarity of the solution?

asked by Andrew J. DuBois on July 11, 2016
57. ### Chemistry

N2H4 + 2H2O2= N2 + 4H2O What are the mole ratios of hydrazine (N2H4) to hydrogen peroxide (H2O2) and hydrazine to water

asked by Damon on July 14, 2016

a new piece of equipment cost \$18,000 with a residual value of \$600 and an estimated useful life of five year. Assuming twice the straight-line rate, the book value at the end of year 2 busing the declining-balance method

asked by KayKay on July 7, 2016
59. ### chemistry

Calculate the grams or milliliters of solute needed to prepare the following solutions. 1.)75. g of a 7.0 % (m/m) KCl solution 2.) 1250 mL of a 8.0 % (m/v) NH4Cl solution 3.) 270. mL of a 15.0 % (v/v) acetic acid solution I really just need to know how to

asked by maria on July 17, 2016
60. ### Chemistry

C2D3 has a solubility product constant of 9.14×10−9. What is the molar solubility of C2D3? Express your answer with the appropriate units.

asked by Damon on July 28, 2016
61. ### Probability

A customer at Cavallaro’s Fruit Stand picks a sample of 3 oranges at random from a crate containing 60 oranges, of which 4 are rotten. What is the probability that the sample contains 1 or more rotten oranges?

asked by Brandon on July 23, 2016
62. ### Math (Rational Inequality)

A box with a square base is having a volume of 8 cubic meters. Let x be the length of the side of the square base and height of the box. What are the possible measurements of a side of the square base if the height should be longer than a side.

asked by Lhor on July 25, 2016
63. ### Maths

In a box of chocolates, •one-fifth are plain chocolate •one-sixth are white chocolate •the other 38 are milk chocolate. How many chocolates are there in the box?

asked by Amy on July 16, 2016
64. ### Chemistry

Express each aqueous concentration in the unit indicated. 45 ppm NO3 -, as molarity of nitrate ion in [mol NO3 - /L].

asked by Chem&Society on July 20, 2016
65. ### Math

A cyclist rides his bike at a speed of 27 miles per hour. What is this speed in feet per second? How many feet will the cyclist travel in 15 seconds? In your computations, use the fact that 1 mile is equal to 5280 feet. Do not round your answers.

asked by Jalen on July 25, 2016
66. ### Need Help Please- Pre-Calc

The coordinates of the five quarter points for y=sin(x) are given below. Use these quarter points to determine the​ y-coordinates of the quarter points of y=5sin(-π/3x). (0,0) (π/2,1) (π,0) (3π/2,-1) (2π,0) (Type ordered pairs. Type exact​

asked by chizoba on July 31, 2016
67. ### Chemistry

Two closed vessels of equal volume both with pressure p1 and temperature t1 are connected to each other by tube with negligible volume. If the temperature maintained of both vessels is then changed to t1 and t2 respectively what is the pressure in the

asked by Yuktee on July 7, 2016
68. ### math

Find the area of the following plane figure. Use = 3.14. A circle has a radius of 8 cm. What is its area? Area (to the nearest tenth) =

asked by C on July 5, 2016
69. ### Chemistry

In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be needed in the reaction?

asked by Mariah on July 14, 2016
70. ### kashinath palod

an object of mass 3 kg is at rest. Now a force of vectorS = 6t2^i + 4tj^ is applied on the object then velocity of object at t = 3 sec. is?

71. ### Microsoft word

Elisa and Josh need to access General Help. Elisa will press the F1 key. Josh will click on ? in the upper-right corner of the Word document. Who will access General Help? A. Neither Elisa nor Josh B. Only Elisa C. Both Elisa and Josh D. Only Josh My

asked by Daniela on July 17, 2016
72. ### CHEMISTRY

A 1.575 g sample of ethanedioic acid crystals, H2C2O4. xH20 was dissolved in water and made up to 250cm^3 . One mole of the acid reacts with two moles of NaOH. In a titration, 25.0 cm^3 of this solution of acid reacted with exactly 15.6 cm^3 of 0.160 mol/

asked by Jack on July 9, 2016
73. ### Math Fraction

Bernadette cuts a piece of fabric into 4 peices of the same length. After she cut off 3 feet from one of the pieces, she is left with a piece that is 2 feet long. What is the length of the fabric she started with?

asked by Hikaru on July 1, 2016
74. ### Com 425

Which of the following statements is an example of metacommunication? 1) "Lets introduce ourselves one at a time." 2) Don't call me names!" 3) I think we should take this vote to the Board." 4) Let's agree to not discuss old issues today."

asked by Paula on July 17, 2016
75. ### geometry

If BE−→− bisects ∠ABD and m∠ABE = 28°, find m∠ABD.

asked by g on July 7, 2016
76. ### chemistry

Using dissociation constants from Appendix D in the textbook, determine the value for the equilibrium constant for each of the following reactions. (Remember that when reactions are added, the corresponding equilibrium constants are multiplied.) (i)

asked by sayuri on July 29, 2016
77. ### Math

Bobs car gets 23 miles per gallon of gas. If bobs car is traveling at a constant rate of 69 miles per hour, how may gallons of gas will his car use in 40 minutes?

asked by Anonymous on July 10, 2016
78. ### PHYSICS--

The objective and eyepiece of an astronomical telescope are double convex lenses with refractive index 1.5. When the telescope is adjusted to infinity, the separation between the two lenses is 16 cm. If the space between the lenses is now filled with water

asked by RAM on July 15, 2016
79. ### mathematics

a1=1 ,an=3an-1+2 for n>2

asked by math on July 17, 2016
80. ### Economics

1. Johnny washes Mrs. Smith s car. She offers to pay Johnny with cookies but Johnny prefers cash. A. Measure of Value B. Medium of Exchange c. Store of Value 2. Johnny puts the money he earns from washing cars under his mattress. He will spend it later. A.

asked by Anonymous on July 17, 2016
81. ### ststistics

24% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use

asked by Anonymous on July 25, 2016
82. ### math

Find the area of the following plane figure. Find the altitude of a triangle whose area is 100 cm2 and whose base is 20 cm. Altitude =

asked by C on July 4, 2016
83. ### Math

From a window A,10m above the ground, the angle of elevation of the top C of a tower is x degrees,where tan X=5/2 and the angle of depression of the foot D of the tower is y degrees, where tan y=1/4.calculate the height Cd of the tower in metres.

asked by Naina on July 10, 2016
84. ### math

mr. Carr is installing wall to wall carpeting in a room that measures 12 1/2ft by 9 2/3 ft how much will it coast if the carpet is \$26 per square yard

asked by walter on July 6, 2016
85. ### chemistry

How to solve CoCl2+HO2- ------> Co(OH)3+ Cl- by half reaction method

asked by Pratik Rathi on July 28, 2016
86. ### Chemistry

Electrochemistry In the electrolysis of aqueous copper(II) bromine CuBr2(aq, 1.00 g of copper is deposited at the cathode. How many grams of bromine are produced at the anode?

asked by sarah simpson on July 29, 2016
87. ### Physics

At what positions is the speed of a simple harmonic oscillator half its maximum? That is, what values of x / X give v = ±vmax/2 , where X is the amplitude of the motion? Hello, I am so confused about this question. I am not really sure where to start.

asked by Elizabeth on July 24, 2016
88. ### PreCalculus 1

I have graphed the equations onto my calculator but I don't know how to answer the questions. Can someone explain this to me? 2. Coco, the wonder cat, is watching a spider on a wall that is 18 feet wide and 12 feet tall. The spider moves along for 10

asked by Anonymous on July 7, 2016
89. ### math

Jason is considering purchasing a new machine to make plastic silverware. The machine produces 1,000 pieces of silverware in two hours. One box contains 50 pieces of silverware and sells for \$3.00. If the machine costs \$9,000, and runs for 24 hours a day,

asked by mpho on July 16, 2016
90. ### intermediate algebra

Mr. Lakandula would like to increase his production of milkfish due to its high demand in the market. He is thinking of making a larger fishpond in his 8000 sq. m lot near a river. Help Mr. Lakandulaby making a sketch plan of the fishpond to be made. Out

asked by sylvia on July 6, 2016
91. ### Statistics

The ages of commercial aircraft are normally distributed with a mean of 13.5 years and a standard deviation of 7.3 years. What percentage of individual aircraft have ages greater than 15 ​years?

asked by Shawn on July 26, 2016
92. ### Chemistry

A 25g piece of an unknown metal alloy at 150 degrees Celsius is dropped into an insulated container with 200 g of ice. Calculate the specific heat capacity of the metal, given that 9.0 g of ice melted. How would you work this out?

asked by Fred on July 5, 2016
93. ### Physics

What is the rotational speed of the Second Hand on a clock. Note, the answer must be in rev/s. The Hour Hand is 2.31e-05 rev/s; The Minute Hand is 2.78e-4 rev/s. I've checked with 3 tutors and none of them have gotten an answer that is considered correct.

asked by Annabelle on July 1, 2016
94. ### physics

A swimming pool of width 9.0 m and lenght 24.0 mis filled with water to a deepth of 3.0 m force 1215 m.Calculate pressure on the bottom of the pool due to the water

asked by Deekshithaa on July 2, 2016
95. ### math

Total cost of job = \$147.51 Duration of job = 5 hours Price of parts = \$32.50 Overhead rate = 55% Hourly labor rate = \$

asked by C on July 1, 2016
96. ### Economics

Suppose you are a producer of friendship bracelets. How would the following events affect your/the market's willingness and ability supply friendships bracelets? Match the event on the left to the proper determinant on the right. 1. The price of friendship

asked by Courtney on July 21, 2016
97. ### Chemistry

How much H3PO4 is needed to neutralize 1 liter of a 0.75M solution of NaOH? (in moles)

asked by Damon on July 26, 2016
98. ### pre cal

Suppose the speed of sound is c, and gravity is g. If you throw a rock from an initial height h0 and with an initial velocity v0 the height h(t) of the rock after time t is h(t)=−g2t^2+v0t+h0. (The height is negative when the rock is below ground level.

asked by Anonymous on July 12, 2016
99. ### math

Use the formula to solve the problems. B * In The amount that results when \$3,000 is compounded at 7% annually over eight years. \$ a0 The interest earned in this case.

asked by C on July 4, 2016
100. ### physics

Two forces 5N &10N are acting at an angle of 120° between them. Find the resultant force in magnitude and direction.

asked by sai on July 2, 2016