# Blake

Popular questions and responses by Blake-
## Chemistry

Write an overall balanced equation for these unbalanced half-reactions: In --> In3+ Cd2+ --> Cd I multiplied both sides by integers to get the electrons to be equal on both sides but I don't know what the final overall balanced equation looks like.

*asked on March 3, 2016* -
## math

Sophina bought 3 yards of trim to put around a rectangular scarf. She does not want the scarf to be wider than 12 inches or narrower than 6 inches. Using whole numbers, if she uses all the trim, what are the possible dimensions of her scarf in inches?

*asked on March 30, 2011* -
## Chemistry

1.What is the pH of a solution containing 0.042 M NaH2PO4 and 0.058 M Na2HPO4 ? The pKa of sodium phosphate is 6.86. pH = 6.86 + log [0.058] / [0.042]; pH = 6.86 + 0.14; pH = 7.00 That is my answer to the above question. The following question is what I am

*asked on January 27, 2013* -
## english

20. Which of the following statements would be considered a hasty generalization? The sun is at its highest point between 10 a.m. and 2 p.m. The elderly are often resistant to advances in technology. When it snows, bridges tend to freeze before the roads

*asked on April 10, 2015* -
## arithmetic

how many cups of sorbet are used in 8 cups of punch? Ginger Ale- 40% Orange Juice- 25% Pineapple Juice- 20% Sorbet- 15%

*asked on October 23, 2017* -
## science

I need to make an acrostic for the word kinetic

*asked on October 9, 2013* -
## AP Chemistry

If the heat of combustion of 1-butanol (C4H9OH) is 2,710 kJ/mol, what mass of oxygen is consumed when enough 1-butanol is burned to yield 26,400 kJ of energy? I have no clue where to begin I thought to use enthalpy but it didnt work

*asked on December 5, 2017* -
## Chemistry

A sample of ammonia gas was allowed to come to equilibrium at 400 K. 2NH3(g) --> N2(g) + 3H2(g) At equilibrium, it was found that the concentration of H2 was 0.0584 M, the concentration of N2 was 0.0195 M, and the concentration of NH3 was 0.430 M. What was

*asked on July 16, 2012* -
## AP Chemistry

If the heat of combustion of 1-butanol (C4H9OH) is 2,710 kJ/mol, what mass of oxygen is consumed when enough 1-butanol is burned to yield 26,400 kJ of energy? I have no clue where to begin I thought to use enthalpy but it didnt work

*asked on December 5, 2017* -
## Physics

An Alaskan rescue plane traveling 38 m/s drops a package of emergency rations from a height of 105 m to a stranded party of explorers. The acceleration of gravity is 9.8 m/s2. Where does the package strike the ground relative to the point directly below

*asked on March 5, 2016* -
## Math

Carla had 2 liters of juice to share. She and her 3 friends each drank an equal amount of the juice. How many milliliters of juice did each friend have?

*asked on March 8, 2019* -
## physics 111

A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m. What impulse was given to the ball by the floor? answer in kg·m/s

*asked on October 27, 2010* -
## math

Jeff put a small box that is 12 inches long, 8 inches wide, and 4 inches tall inside a box that is 20 inches long, 15 inches wide, and 9 inches high. How much space is left in the larger box?

*asked on March 30, 2011* -
## Math

Prove 1+sec2x / tan2x = cotx

*asked on January 8, 2013* -
## Science

When the temperature equals the dew point, what is the relative humidity? A.zero B.10% C.50% D.100%

*asked on March 2, 2017* -
## Math

A small bottle contains 2 cups of juice. Do 5 small bottles of juice have a greater amount of juice than a 1 quart bottle of juice ? Please explain

*asked on March 10, 2019* -
## Math

A pound of apples cost $1.30. Sawyer bought 2 1/2 pounds of apples. How much did Sawyer pay? Please explain

*asked on March 11, 2019* -
## physics 111

The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a cylindrical tube 58 ft long with a radius of 29 ft (see figure). If a rider sits in a chair at the end of one arm facing the center, how many revolutions per minute would

*asked on November 7, 2010* -
## Math

How many 250ml glasses can be filled with 2l of water

*asked on March 10, 2019* -
## Math

Mr. Randall has wrenches in a toolbox. The total mass of the wrenches in the toolbox is 3 kilograms. Mr. Randall takes out one wrench that has a mass of 350 grams. What is the mass of the wrenches left in the toolbox?

*asked on March 26, 2019* -
## Algebra

for the follwong equation, state the value of the discriminant and then describe the nature of the solutions: 5^2+9x+2=0

*asked on June 10, 2010* -
## Math

1.A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: f(n) = 12(1.03)n Part A: When the scientist concluded his study, the height of the plant was

*asked on December 19, 2015* -
## math

Two towns on a map are 2 1/4 inches apart. The actual distance between the two towns is 45 miles. what does one inch on the map represent?

*asked on April 28, 2015* -
## Physics

In 2002, a gargantuan iceberg broke away from the Ross Ice Sheet in Antarctica. It was approximately a rectangle 218 km long, 25.0 km wide, and 250.0 m thick. What is the mass of this iceberg, given that the density of ice is 917 kg/m3? How much heat

*asked on April 21, 2019* -
## Math

An adult bottle nose dolphin has a mass of 200 kilograms. What is the mass of an adult bottle nose dolphin in grams?

*asked on March 7, 2019* -
## Finance

Consider a risky portfolio. The end-of-year cash flow derived from the portfolio will be either $70,000 or $200,000 with equal probabilities of 0.5. The alternative risk-free investment in T-bills pays 6 percent per year. a) If you require a risk premium

*asked on September 30, 2008* -
## Algebra

HOURS STUDYING AVG GRADE 0 62 1 78 2 85 5 74 WHICH TYPE OF FUNCTION IS MOST LIKELY TO MODEL THESE DATA? A. LINEAR FUNCTION W/POSITIVE SLOPE B. LINEAR FUNCTION W/NEGATIVE SLOPE C. NON-LINEAR THAT DECREASE THE INCREASE D. NON LINEAR FUNCTION THAT INCREASES

*asked on April 6, 2016* -
## biochemistry

1. Walking consumes approximately 100 kcal/mi. In the hydrolysis of ATP (ATP → ADP + Pi), the reaction that drives the muscle contraction, ΔGo’ is -7.3 kcal/mol (-30.5 kJ/mol). Calculate how many grams of ATP must be produced to walk a mile. ATP

*asked on February 6, 2013* -
## math

Let A and B be subsets of a universal set U and suppose n(U) = 350, n(A) = 130, n(B) = 90, and n(A B) = 50. Find the number of elements in the set. n(Ac n B)

*asked on March 3, 2020* -
## bio

what is the advantage of stopping mitosis at metaphase when making a chromosome spread? it is advantageous to stop at metaphase to view the chromosomes for chromosomal analysis. (is this sufficient?)

*asked on April 15, 2007* -
## geometry

In a triangle MNO with altitude NP with MP of 15 and NP of 9 what is the length of PO? MNO creates a right angle!

*asked on December 19, 2013* -
## Math

Carla had 2 liters of juice to share. She and her 3 friends each drank an equal amount of the juice. How many millimeters of juice did each friend have?

*asked on March 10, 2019* -
## Physics

Chinook salmon are able to move through water especially fast by jumping out of the water periodically. This behavior is called porpoising. Suppose a salmon swimming in still water jumps out of the water with velocity 6.41 m/s at 44.1° above the

*asked on January 21, 2015* -
## social studies

To which system of government is the federal system most similar? A - The Unitary system B - The confederal system C - The Unitary System D - The confenderal System ******

*asked on March 14, 2016* -
## History

What effect did the space race have on the United States? The United States government revamped education. The United States Air Force established NASA as a division. The United States concentrated on developing radar. The United States built more bombers

*asked on September 13, 2019* -
## com155

Can you check my paragraph for grammar errors, strong topic/concluding sentence,and any other recommended feed back? Paragraph two was more effective than paragraph one because it contained sentence variety and rhythm. Paragraph one consisted of short

*asked on July 2, 2011* -
## COM/156

I have a rough draft of an essay that I need revised and checked for comma usage. Would someone be able to look my essay over? To be honest I do not have another person to read over my work.

*asked on August 20, 2011* -
## Chemistry

An aerosol can is empty, except for the propellant gas which exerts a pressure of 1.20 atm at 21 °C. If the can is thrown into a fire and heated to a temperature of 565 °C, what will be the pressure inside the hot can?

*asked on October 15, 2013* -
## chemistry

A sample of ammonia gas at 65.5°C and 0.921 atm has a volume of 15.31 L. What is its volume when the temperature is -15.8°C and its pressure is 0.921 atm?

*asked on July 20, 2011* -
## Algebra

A silo is filled at a constant rate for a total of 10 hours. Number of Hours---Amt of Corn(cu ft) 0----------------- 0------------- 3------------------2475--------- 5------------------4125---------- 8------------------6600---------- Enter the "percent" of

*asked on April 7, 2016* -
## science

what are some structural and some behavioural adaptions that help the gold fish survive

*asked on May 15, 2019* -
## Math

Theo filled up a 3 liter watering can to water the garden. He has 750 millimeters of water did Theo use

*asked on March 10, 2019* -
## Comm Arts

3 differences between the book and the movie "The Prince and the Pauper".

*asked on November 9, 2014* -
## calculus

Given f'(x)=3cosx-10sinx and f(0)= -6 Find f(x)

*asked on March 20, 2012* -
## geometry

Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.

*asked on September 14, 2017* -
## chemistry

How many grams of potassium iodide, KI, are required to make 2.0 L of a 0.1M solution?

*asked on October 28, 2016* -
## Chem

You have 25.00 mL of 3% by mass solution of hydrogen peroxide. Assume the density of this solution is 1.00 g/mL. If all of the hydrogen peroxide decomposes to water and oxygen according to the reaction below: 2H2O2 (aq) 2H2O (l) + O2 (g) What is the total

*asked on September 21, 2015* -
## Physics

In Figure 4-44, a baseball is hit at a height h = 1.10 m and then caught at the same height. It travels alongside a wall, moving up past the top of the wall 1.1 s after it is hit and then down past the top of the wall 4.8 s later, at distance D = 47 m

*asked on January 21, 2011* -
## phy 111

A daredevil on a motorcycle leaves the end of a ramp with a speed of 34.5 m/s as in the figure below. If his speed is 32.1 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.

*asked on October 14, 2010* -
## Physics

A long wire that carries a current is bent into a solenoid with upward current in the front looking. If the observer could "see" the magnetic field inside this arrangement of solenoid from the right side, how would it appear? a) The observer would "see" a

*asked on November 14, 2010* -
## Physics

The mass of the heavier block is 22 kg and the mass of the lighter blocks is 11 kg and the magnitude of the force of the connecting string on the smaller block is 13 N. Assume: g = 9.8 m/s 2 and the horizontal surface on which the objects slide is

*asked on December 8, 2015* -
## Math

Mr. Rivera opened a package of 150 drinking cups for his restaurant. During the day, 97 cups were used. What fraction of the package of cups was used? Express the result using a simple, convenient fraction that is close in value to the exact answer. A) 2/3

*asked on September 5, 2009* -
## Chemistry

What is the pH of a solution containing 0.10 M propanoic acid (HC3H5O2) and 0.10 M sodium propanoate after 0.02 mol of HCl is added to 1.0 L of the solution?

*asked on February 28, 2010* -
## biochemistry

2. Given the following data, calculate the Keq for the denaturation reaction of β-lactoglobin at 25 oC. Δ Ho = -88 kJ/mol, Δ So = 0.3 kJ/mol

*asked on February 6, 2013* -
## History

How does the English Bill of Rights limit the power of the monarch.

*asked on November 18, 2019* -
## physics

a highway is to be built between two towns, one of which lies 35.0 km south and 72.0 km west of the other. what is the shortest length of highway that can be built between the two towns, and at what angle would this highway be with respect due to west? can

*asked on October 16, 2009* -
## math

joe walked 4 miles north, 9 miles east then 8 miles north and 7 miles east if Al decides to walk straight back to where he started how far must he walk?

*asked on November 11, 2012* -
## physics

Cheetahs can sustain speeds of 25 m/s over short distances. One of their prey is Thomson's gazelle, with top speed about 22 m/s. If a 52kg cheetah running southward at top speed grabs and holds onto a 23kg gazelle running westward at 22 m/s, find the

*asked on February 25, 2014* -
## physics 111

A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 10.0 N force directed 25.0° below the horizontal. 1) what's the work done by the applied force? in joules 2)whats the work done by the normal force exerted by the

*asked on October 15, 2010* -
## Social Studies

What factors were responsible for the growing wealth and prosperity of England in the 17th century This is a question from Crossroads Socials 9 Please help.

*asked on October 12, 2009* -
## Science

Which of the following land regions should show the greatest similarities in fossil types?

*asked on February 16, 2016* -
## ap calculus

find the particular solution y=f(x) to the differential equation with the initial condition y(-1)=3/2

*asked on April 28, 2012* -
## Chemistry

using the balanced reaction equation for the combustion of propane, determine the number ofmoles of oxygen that would react with.50 mol propane and the number of moles of carbon dioxide that would be produced?

*asked on January 9, 2011* -
## Chemistry

A chemist reacts 8.85 g of iron with an excess of hydrogen chloride to form hydrogen gas and iron choloride. How do you calcualte the theoretical yield and the percentage yield of hydrogen if .27g H2 are collected.

*asked on January 10, 2010* -
## Physics- 8th Grade

What force is needed to accelerate a 10 kilogram shopping cart 3 m/s^2 (squared)?

*asked on October 30, 2008* -
## Algebrad

A six sided number cube is rolled and a coin is flipped. What is e probability that the number on the cube is less than 4 and the coin lands on heads? I think the answer might be 1/3. Heads and tails is 1 and less than 4 is 3. I am not sure.

*asked on May 22, 2016* -
## math

Two ships leave a port at 9 a.m. One travels at a bearing of N 53° W at 12 miles per hour, and the other travels at a bearing of S 67° W at 19 miles per hour. Approximate how far apart they are at noon that day. (Round your answer to one decimal place.)

*asked on August 24, 2017* -
## calculus

find functions f(x) and g(x) so that f(g(x))= sqrt(tan(3x^2 - 7)) Would this work??? g(x)= 3x^2 -7 f(x)= sqrt(tan(x))

*asked on October 12, 2010* -
## Algebra

Charlie's wallet contains 3 ones, 2 fives, 2 tens, and 4 twenty dollar bills. ?Charlie randomly grabs a bill from his wallet, replaces it, and grabs another bill. What is the probability that the sum of the two bills is $25? Maybe 6/25 or 6/110. I am

*asked on May 23, 2016* -
## physics

A woman is riding a Jet Ski at a speed of 27.9 m/s and notices a seawall straight ahead. The farthest she can lean the craft in order to make a turn is 21.0°. This situation is like that of a car on a curve that is banked at an angle of 21.0°. If she

*asked on February 16, 2012* -
## com 155

Are these well written sentences? 1. When I am writing, my words need to construct a clear picture for my readers. 2. I will avoid using slang in my writing. 3. Using irrelavant words, is one error I need to change in my writing. 4. I need to use a

*asked on May 25, 2011* -
## Physics 111

While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 62 kg person develops a power of 67 W during a race, how fast is the person running? (Assume a running step is 1.5 m long.)

*asked on October 14, 2010* -
## MATH

if (3-x)=6, (7-5x) are consecutive terms of GP with common ratio r>0, fing d value of (x) and d common ratio. thanks

*asked on October 24, 2016* -
## calculus

Given the graph of f(x) find the graph of 2 f( -3x - 2) - 4 Is this correct??? First, compress the graph horizontally by 3. Second, reflect the graph over the y-axis. Third, shift the graph 2 units to the right. Fourth, stretch the graph vertically by 2.

*asked on October 13, 2010* -
## Calculus 1

Find the equlibrium point for each pair demand and supply function. Demand:q = 8800-30x; supply:q = 7000+ 15x

*asked on July 22, 2010* -
## Science

WHICH SYSTEM HAS THE GREATEST TIDAL EFFECT? EARTH-SUN OR EARTH-MOON?

*asked on May 5, 2015* -
## calculus trigonometric substitution

∫ dx/ (x^2+9)^2 dx set x = 3tan u dx = 3 sec^2 u du I = 3 sec^2 u du / ( 9 tan^2 u + 9)^2 = 3 sec^2 u du / ( 81 ( tan^2 u + 1)^2 = sec^2 u du / ( 27 ( sec^2 u )^2 = du / ( 27 sec^2 u = 2 cos^2 u du / 54 = ( 1 + cos 2u) du / 54 = ( u + sin 2u / 2) / 54 =

*asked on March 16, 2015* -
## Boston Tea Party

With the Boston Tea Party was it a group of British colonists who boarded the ships and destroyed the tea by dumping it in the Boston Habor?

*asked on September 15, 2013* -
## Math

Francesca has 16/7 ft of string for her kite. Jason has 2 3/4 ft of string for his kite. Katie has more string than either Francesca or Jason. How much string could Katie Have?

*asked on March 17, 2010* -
## algebra

4x+12>4 and 3x-25>-13 Solution {xIx> ? } I get so lost on these.

*asked on January 20, 2010* -
## precalculus

1.csc^2x-1/csc^2x=cos^2x 2.1/1-cosx+1/1+cosx=2csc^2x 3.sinxcosy+cosxsiny/cosxcosy-sinxsiny=tanx+tany/1-tanxtany

*asked on November 10, 2009* -
## math

the two-digit number whose cube root is the square root of the sum of its digits THe cube root of 27 is 3. Only two possible answers; 27 or 64 Looks fairly obvious. 2+7 = 9. Sqrt 9 = 3 and (27)^1/3 = 3. check. 6+ 4 = 10. sqrt 10 = 3+ and (64)^1/3 = 4

*asked on October 2, 2006* -
## Chemistry

A gaseous mixture contains 413.0 Torr of H2(g), 372.1 Torr of N2(g), and 70.1 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.

*asked on October 16, 2013* -
## Math

A raffle sold 400 tickets and awards a grand prize of $1,000. Was $4 a fair price to pay for a ticket?

*asked on September 28, 2009* -
## counseling

Which test is among the most commonly used intelligence instruments?

*asked on November 2, 2016* -
## ap calculus

write an equation for the line tangent to the graph of f at (-1,3/2) and use it to approximate f(-1,1)

*asked on April 28, 2012* -
## Math

What is the VOLUME of the solid with the given measurements? Trianglular prism: base 2cm by 3cm height 8cm

*asked on December 28, 2011* -
## Finance

Suppose that you sell short 100 shares, now selling at $70 per share. What is your maximum possible loss? What happens to the maximum loss if you simultaneously place a stop buy order at $78?

*asked on September 9, 2008* -
## Math

help me solve this conic: 12x^2+y^2+6x-9=0 not sure what you mean by "solve this conic" You want to know what kind of conic? ellipse to find out its properties you have to change it into standard form (x-h)^2/a^2 + (y-k)^2/b^2 = 1 I would first divide by

*asked on April 2, 2007* -
## Physics

A computer is reading data from a rotating CD-ROM. At a point that is 0.037 m from the center of the disc, the centripetal acceleration is 130 m/s2. What is the centripetal acceleration at a point that is 0.064 m from the center of the disc?

*asked on February 16, 2012* -
## geometry

(6,4)and(6,-2) find the distance between these pairs of points

*asked on September 22, 2010* -
## applied information technology

What is a Pentium 3 computer? when were they first released? Try to find a typical specification for a Pentium 3 computer

*asked on February 3, 2009* -
## Math

Women make up 5% of all film directors. There are 122,500 film directors working. How many women are directing films?

*asked on April 28, 2015* -
## Angular Resolution

An astronomer wants to determine whether or not he or she can photograph Castor and Pollux at the same time on a 5 x 8 inch plate using a lens system with a 1200 mm focal length. If the two stars are approximately 5 degrees apart, will it be possible to

*asked on April 23, 2013* -
## calculus reposted

Given the graph of f(x) find the graph of 2 f( -3x - 2) - 4 Is this correct??? First, compress the graph horizontally by 3. Second, reflect the graph over the y-axis. Third, shift the graph 2 units to the right. Fourth, stretch the graph vertically by 2.

*asked on October 14, 2010* -
## math

Linda invests $15,000 in a retirement account that pays 9%interest compounded monthly. How much will she have in this account after 5 years?

*asked on December 13, 2008* -
## Stats

What are variance and covariance? What do they mean? What are their differences/relationship?

*asked on September 22, 2008* -
## physics

A projectile of mass 0.803 kg is shot straight up with an initial speed of 24.8 m/s. (a) How high would it go if there were no air resistance? (b) If the projectile rises to a maximum height of only 9.36 m, determine the magnitude of the average force due

*asked on March 12, 2015* -
## Chemistry

A gaseous mixture contains 413.0 Torr of H2(g), 372.1 Torr of N2(g), and 70.1 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.

*asked on October 16, 2013* -
## Geography

Okay so here is the question Suppose you are an official in an Eastern European nation. Write a letter to a major manufacturer in the United States. In the letter, explain why the manufacturer might want to set up a factory in your nation. Choose a

*asked on October 28, 2012*