# Becca

Popular questions and responses by Becca-
## chemistry

When the following reaction is balanced in acid solution, the coefficient of H+(aq) will be: Cr2O72-(aq) + Sn2+(aq) --> Cr3+(aq) + Sn4+(aq)

*asked on March 22, 2012* -
## English

PLEASE HELP!!! Please check my answers!! I'm not sure about a few of them, but i marked the answers that I think are correct. 1. In Act IV of Romeo and Juliet, what is Friar Lawrence’s advice to Juliet concerning her parents’ wishes that she marry

*asked on March 17, 2016* -
## Pre-calculus

Jana hit a golf ball with an initial velocity of 102 feet per second at an angle of 67° with the horizontal. After 2 seconds, how far has the ball traveled horizontally?

*asked on February 19, 2013* -
## Chemistry

A sample of unknown ore was analyzed and fgound to contain 12.7% Al, 19.7% N,and 67.6% O. What is the empirical formula of this ore?

*asked on December 8, 2010* -
## Chemistry

At a certain temperature, the solubility of N_2 gas in water at 2.38 atm is 56.0 mg of N_2 gas/100 g of water. Calculate the solubility of N_2 gas in water, at the same temperature, if the partial pressure of N_2 gas over the solution is increased from

*asked on February 4, 2012* -
## Chemistry

What is the theoretical yield of PI3 from the reaction of 27.0 g of P and 68.0 g I2? 2P(s)+3I2(s) 2PI3(s)

*asked on December 8, 2010* -
## Calculus I

A particle on the x-axis is moving to the right at 2 units per second. A second particle is moving down the y-axis at the rate of 3 units per second. At a certain instant the first particle is at the point (5,0) and the second is at the point (0,7). How

*asked on May 2, 2017* -
## Chemistry

For another picnic, you want to make hamburgers with pickles, again without having any left over. You need to balance the number of packages of buns (which usually contain 8 buns) with the number of packages of hamburger patties (which usually contain 12

*asked on January 19, 2015* -
## chemistry

If a swimmer has a lung volume of 6 at sea level, what would the volume of her lungs be when she is at the bottom of a pool that is 5 deep? Assume that the temperature and amount of the air in the lungs remain unchanged.

*asked on September 2, 2011* -
## chemistry

Find the molar solubility of BaCrO4 (Ksp= 2.1 × 10−10) in 3.5 × 10−3 M Na2CrO4

*asked on June 23, 2016* -
## Pre-calculus HELP PLEASE !

Find the coordinates of the center of the ellipse represented by 4x^2 + 9y^2 – 18y – 27 = 0. For 2x^2 + xy + 2y^2 = 1, find , the angle of rotation about the origin, to the nearest degree. Find the distance between points at (–1, 6) and (5, –2).

*asked on April 12, 2013* -
## Chemistry

Calculate the energy of a photon of light with a wavelength of 360 nm?

*asked on December 8, 2010* -
## English

Act 1 Scene 1 .. Romeo & Juliet I don't know the answer to two of my questions for Romeo and Juliet the first one . . . Although Rome and Juliet is a tragedy, much of the play is quite comic. Outline briefly the comic elements in this scene. To whatextent

*asked on February 13, 2007* -
## Physics

A 70.0 kg base runner begins his slide into second base while moving at a speed of 4.0 m/s. The coefficient of friction between his clothes and Earth is .70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is

*asked on December 5, 2006* -
## Physics

A 215 g particle is released from rest at point A (the middle of one side) inside a smooth hemispherical bowl of radium 30.0 cm. Calculate the gravitational potential energy at A relative to B. (B is in bottom-middle of the bowl) Ok, so PE_g=mgh. How would

*asked on December 5, 2006* -
## Science

Quartzite and marble can look very similar. Why do you think artists carve sculptures out of marble more often than quartzite? Hint: Think composition and parent rock.

*asked on August 26, 2019* -
## Physics

Please check my answers!! 1. A 75 kg. man steps off the end of a diving board, and hits the water at 7.7 m/s. Ignoring air resistance, what was the mans PE (potential energy) right before he stepped off the diving board? I got 2223.375 Joules after Damon

*asked on February 29, 2016* -
## Physics

A 50.0 kg parachutist jumps out of an airplane at a height of 1.00 km. The parachute opens, and the jumper lands on the ground with a speed of 5.00 m/s. By what amount was the jumper's mechanical energy reduced due to air resistance during this jump? so,

*asked on December 5, 2006* -
## economics

Which goods would be included in the calculation of GDP? A. toys made in China at a factory owned by a U.S. company B. cars made in Tennessee at a factory owned by a Japanese car company C. plastic made in Kentucky and sold to a toy maker in Ohio D. cotton

*asked on February 18, 2016* -
## math

Find the area of the segment of the circle. Leave your answer in terms of pi. there is a circle with a shaded area that has a 90 degree triangle in it and a 3 next to one soide of the triangle

*asked on May 4, 2013* -
## Calculus

Let R be the region bounded by y=x^2, x=1, and y=0. Use the shell method to find the volume of the solid generated when R is revolved about the line x=-11.

*asked on January 29, 2012* -
## Elementary Statistics

Ten horses are entered in a horse race. How many permutations of 1st, 2nd, and 3rd place winners are there?

*asked on April 30, 2017* -
## English

Please help me with these question about Romeo and Juliet!!! They really are confusing me!! 1. In act 4 scene 1 of Romeo and Juliet, Paris tells Friar Laurence, "Immoderately she weeps for Tybalt's death, / and therefore have I little talked of love." What

*asked on April 7, 2016* -
## English grammar.

Please check my answer! What is the capitalized phrase? TO SCORE ACCURATELY, bowlers must learn what the terms spare, strike, and split mean. Infinitive phrase**** Gerund phrase Adverb phrase none of the above I though that the capitalized phrase was an

*asked on January 14, 2016* -
## Physics

As part of a safety investigation, two 1200kg cars traveling at 24m/s are crashed into different barriers. Find the average force exerted on the car that hits a concrete barrier and takes 0.16s to stop.

*asked on December 7, 2014* -
## Chemistry

A sample of steam with a mass of .550 g and at a temperature of 1 degrees C condenses into an insulated container holding 4.40 g of water at 5.0 degrees C. Assuming that no heat is lost to the surroundings, what will be the final temperature of the

*asked on January 24, 2012* -
## physiology

Pepsin would have the greatest activity... a.)when the pH of the chyme is greater than 3. b.)immediately upon entering the duodenum. c.)immediately upon secretion into the stomach. d.)when the pH of the chyme is less than 3.

*asked on December 10, 2011* -
## math

The vertex of a parabola is(-2,-4). One x-intercept is 7. What is the other x-intercept?

*asked on March 22, 2010* -
## Math

A musician plans to perform 4 selections. In how many ways can she arrange the musical selections

*asked on October 29, 2009* -
## US History

read the passage and answer the question below. “They expressed their great satisfaction, saying that no greater good could come to them than to have our friendship, and that they desired to live in peace with their enemies, and that we should dwell in

*asked on April 3, 2020* -
## social studies

what are all the answers to lesson 4 unit 4 in connexus? I am stuck on this question after an excerpt- According to the excerpt, who had more power under the Articles of Confederation? 1) it gave a majority of the power to the national government, and

*asked on October 22, 2018* -
## Chem

Given the reaction: Fe2SiO4 (s) + 2 H2CO3 (aq) ----> 2FeCO3 (s) + H4SiO4 (aq). How many grams of Fe2SiO4 are required to completely react with 55.0 mL of .500 M H2CO3 (aq)?

*asked on March 7, 2017* -
## physics

98. On which of these hills does the ball roll down with increasing speed and decreasing acceleration along the path? (Use this example if you wish to explain to someone the difference between speed and acceleration.) 99. If you drop an object, its

*asked on June 11, 2014* -
## Algebra

Two questions I need help with. Find the indicated partial sum using the information given. 1. a3=4/9, a7=9/64, S6 Determine wheater the infinite geometric series has a finite sum 2. 6+ 3+ 3/2 + 3/4 +.... 3. -49 + (-7) + (- 1/7) +...

*asked on April 8, 2013* -
## Algebra

I need some help figuring these. Compute each product and simplify the result. I don't have the squareroot sign so put that meaning that's where it goes with the number after it. 1. (0.3 Squareroot of 5)^2 2. (2+ squareroot of 5)^2 3. (5+4Squareroot of

*asked on January 18, 2013* -
## Algebra

Rationalize each expression by building perfect nth root factors for each denominator. Assume all variables represent positive quantities. I don’t understand how to compute these. Also I don’t have the square root sign so I typed it out where it would

*asked on January 18, 2013* -
## Algebra

I need some help figuring these. Compute each product and simplify the result. I don't have the squareroot sign so put that meaning that's where it goes with the number after it. 1. (0.3 Squareroot of 5)^2 2. (2+ squareroot of 5)^2 3. (5+4Squareroot of

*asked on January 18, 2013* -
## Math, need help asap

The ramp shown below is used to move crates of fruit to loading docks of different heights. When the horizontal distance AB is 12 meters, the height of the loading dock, BC, is 4 meters. What is the height of the loading dock DE? 12 m 8 m 9 m 15 m

*asked on December 14, 2012* -
## Physics

Wes and Lindsay stand on the roof of a building. Wes leans over the edge and drops an apple. Lindsay waits, 1.25s afrer Wes releases his fruit and throws an orange straight down at 28 m/s. Both pieces of fruit hit the ground simultaneously. Calculate the

*asked on September 16, 2012* -
## Calculus

Let R be the region bounded by y=x^2, x=1, and y=0. Use the shell method to find the volume of the solid generated when R is revolved about the line y=-2.

*asked on January 29, 2012* -
## Chemistry

using the gas laws, What is V in the table below? initial: 1420 torr 75 mL 200 K Final: 760 torr V 360 K What is T using the gas laws? Initial: 91.8 mL 365 K Final: 45.8 mL T

*asked on December 8, 2010* -
## AP Chemistry Born-Haber Cycle?

When using the Born-Haber Cycle for Na2S, do I double the ionization energy of Na since there are two Na ions for every S ion in Na2S? Also, the problem asked me to find the change in energy for S- (g) + e- => S2- (g). Assuming that you do double the

*asked on October 17, 2010* -
## music help PLZ

i am on windows media player tryin to make a mix cd. i made a playlist but i wanna cut some parts into smaller pieces like if i only want a certain part of the song then it will continue to the next song does any1 no how to do that ..Like how to cut the

*asked on April 18, 2010* -
## gr9science

how do u convert g/ml to Kg/m^3 ?

*asked on November 7, 2009* -
## History

Why were Americans interested in expansion northward?

*asked on October 8, 2008* -
## religion

What events and figures have shaped the development of Islam in the United States?

*asked on September 27, 2007* -
## Physics

A train travels between stations 1 and 2. The engineer of the train is instructed to start from rest at station 1 and accelerate uniformly between points A and B, then coast with a uniform velocity between points B and C, and finally accelerate uniformly

*asked on September 17, 2006* -
## algebra

which of the options is a counterexample to the given conditional statement. conditional statement: if x^2=25, then x=5 the options are x=10 none,the statement is true x=-5 x=-10 i think it’s C

*asked on May 23, 2020* -
## Physics

A length 550cm of tin thread wraps around a cylinder exactly 25times. Calculate the circumference and the radius of the cylinder.

*asked on February 21, 2020* -
## math

Two circles meet at A and B. A chord CD of one circle is produced to meet the other circle at E and F so that CDEF is a straight line, as shown. The common chord AB is produced to meet the line CF at a point M between D and E. If M is the midpoint of CF

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

How do you evaluate 16(2^-3 - 4^-2)?

*asked on August 25, 2018* -
## Math

The dome over the town hall has a parabolic shape. I measure 48 m across and rises 12 m at its center. Determine the quadratic equation that models the shape of the parabola. I have learned the formula y = a(x-s)(x-t).

*asked on August 1, 2018* -
## Statistics

In a study of MP3 player popularity, 22% of people in a random sample of 1100 Americans age 12 and older indicated that they owned an MP3 player. The owners were 26% of the males and 18% of the females. Suppose that there were the same number of males and

*asked on May 2, 2018* -
## Math

In the Doubles Game, students can win carnival tickets to spend on games and food. A player pays one ticket to roll two number cubes(six-sided dice). If the numbers match, the player wins five tickets. If a player plays this game 20 times, about how many

*asked on May 29, 2017* -
## K12

Is anyone in K12 here or FLCCA that could help me in Algebra 2???

*asked on December 6, 2016* -
## Math

the top of a rectangular table has a length that is two times it's width. The perimeter of the tabletop is 144 inches. What is the width of the tabletop?

*asked on November 17, 2016* -
## Social Studies

Why did Adams increase the size of the American Navy? He wanted to prepare for all-out war on Britain He hoped it would deter more attacks by French ships He needed to use tax money to fund an increase in military spending Congress passed a law that

*asked on October 17, 2016* -
## Physics

Two positive charged spheres, one with 2 times the charge of the other are 38 cm apart. The net force between them is 0.77 N. What is the charge on the lesser charged sphere?

*asked on May 25, 2016* -
## Math

The ratio of the length of a rectangle to the width of a rectangle is 5:2 if the link is 45 centimeters what is the width of the rectangle in centimeters

*asked on May 17, 2016* -
## Spanish

PLEASE HELP!! I'm confused because I know that the conjugated form for "yo" is digo, but I think it might be decir also because its translated as I have to tell the truth, and decir means "to tell." Yo tengo que _______ la verdad. decir dicen decimos digo

*asked on April 26, 2016* -
## Geometry (PLEASE HELP!!!)

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it

*asked on April 14, 2016* -
## Geometry

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it

*asked on April 14, 2016* -
## Physical Science

Please check my answer!! I would be great if you could explain this to me a little as well... To find the amplitude, measure_____ a. the horizontal distance between consecutive positions b. the horizontal distance between a consecutive crest and trough c.

*asked on April 8, 2016* -
## Trigonometry

PLEASE HELP!! I really don't understand this...I just started learning about trigonometry and SOH CAH TOA and I think this probably has to do with that but I don't know how to apply it... Please explain this to me!!!! I need to know how to do it and not

*asked on March 30, 2016* -
## English

PLEASE HELP!!! I'm really confused about these question from Romeo and Juliet... I marked the answers that I "think" are right but I'm not sure. Please tell me which ones i got wrong and the correct answer!?!?! 1. Why doesn’t Juliet want to marry Paris?

*asked on March 15, 2016* -
## Math

A girl stands 7 meters away from a building. The angle of elevation from where she stands is 25 degrees. How tall is the Building?

*asked on March 6, 2016* -
## Physics

Please help me with this!! I am really confused about it... 1. A 75 kg. man steps off the end of a diving board, and hits the water at 7.7 m/s. Ignoring air resistance, what was the mans PE (potential energy) right before he stepped off the diving board?

*asked on February 29, 2016* -
## Math

Lucy spends 4 hours a week babysitting.Her Sister Lily spends 7/8 as much time babysitting. Does Lily babysit for more or less than 4 hours? 7/8•4= 20/32 But then how do I break that down ?

*asked on February 17, 2016* -
## English 9

Please give me some advice!!!! Compare and contrast the poem "Mexicans Begin Jogging" to the story "Delfino II: Diez in the Desert". Both are written about similar themes, immigration, but the story has a more serious mood than the poem. ******** Both

*asked on January 19, 2016* -
## Social Studies

Which of these factors MOST shaped American identity? A: The United States is located in North America. B: Aristocratic royal governors oversaw the earliest British colonies. C: Early colonists grew cash crops and replied on natural resources to survive.

*asked on November 10, 2015* -
## Chemistry

A solution is prepared by dissolving 0.1 mol of ethanoic acid (CH3COOH) in 500ml of water at 25 C. pKa of ethanoic acid is 4.7. What is the pH of the solution? I'm assuming the equation is pH = pKa + log[Base]/[Acid] but can't get it to work?

*asked on October 21, 2015* -
## Statistics

How do you find the p-value??? Thanks! In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts College, and 30% of the students were in the Education College. To see whether or not the

*asked on June 19, 2015* -
## Math

Seth had a bag with 4 green, 5 yellow, and 6 blue marbles in it. If Seth draws a yellow marble and does not replace it, what is the probability that the second marble he draws is yellow?

*asked on November 5, 2014* -
## English

How could you use the words feel and turn as a linking verb?

*asked on January 14, 2014* -
## physics

A 72.5 kg skier is going straight down a 31.1o slope. Each ski has a contact area with the snow of 0.137 m2. Calculate the pressure that the snow exerts on each ski.

*asked on November 12, 2013* -
## physics

How much power must you exert to horizontally drag a 21.0kg table 15.0m across a brick floor in 20.0s at constant velocity, assuming the coefficient of kinetic friction between the table and floor is 0.500?

*asked on October 24, 2013* -
## Calculus please help !

Find the coordinates of the center of the ellipse represented by 4x^2 + 9y^2 – 18y – 27 = 0. For 2x^2 + xy + 2y^2 = 1, find , the angle of rotation about the origin, to the nearest degree. Find the distance between points at (–1, 6) and (5, –2).

*asked on April 12, 2013* -
## Algebra help!

1.) Solve the system by triangularizing the augmented matrix and using back substitution. -x-y+z=1 x-y-4z=-7 4x+y+z=6 2.) Perform the indicated row operation, then write the new matrix. -4 4 | 4 9 -6 | 5 -2R1+ R2 ---> R2 3.) Solve the system by

*asked on March 28, 2013* -
## Math

1. A triangular prism has vertices at A(2, 0, 0), B(2, 1, 3), C(2, 2, 0), D(0, 0, 0), E(0, 1, 3), and F(0, 2, 0). Which image point has the coordinates (1, 4, 3) after a translation using the vector 1, 2, 3? 2. What point represents a reflection of B over

*asked on February 20, 2013* -
## Math

What is 2.49 divided by 89?(BTW im not cheating im just having trouble checking my answers

*asked on February 12, 2013* -
## science

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

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

A 69 kg swimmer free-falls off a 10.0 m diving platform. The diver comes to a stop 2.7 m below the water's surface. What is the magnitude of the force exerted by the water on the swimmer. (assume a positive direction is up) I calculated the force on the

*asked on October 24, 2012* -
## algebra

if 2k - 4 = 8, then k is what

*asked on July 16, 2012* -
## Math

okay so im doing homework and don't understand how to do it the question is -2 2/3+ d/6= 2/3 the little slash things are fraction things

*asked on May 20, 2012* -
## Calculus

integrate: (square root of (y^2 -121))/y dy, y>11. I got (12(square root of (y^2-121))/12 -sec^-1 (y/12) +C but it's not right. I'm not sure where I am going wrong.

*asked on February 23, 2012* -
## Biology/Chemistry

Consider that the human brain weighs about 1 kg and contains 10^11 cells. Assuming that each cell is entirely filled with water, and knowing that 1 cm^3 of water weighs 1 g, calculate the volume of a brain cell (in picoliters).

*asked on January 26, 2012* -
## quadratic equations

Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office

*asked on January 24, 2012* -
## Calculus

Find the volume of the solid generated by revolving the following region about the given axis. The region in the first quadrant bounded by the curve y=x^2, below by the x-axis, and on the right by the line x=1, about the line x=-2

*asked on January 24, 2012* -
## Calculus

Use the disk method to find the volume of the solid generated when the region bounded by 4= 1/(fourth root of (1-11x)), y=0, x=0, and x=1/22.

*asked on January 24, 2012* -
## Calculus

Use the disk method to find the volume of the solid generated when the region bounded by y=15sinx and y=0, for 0

*asked on January 24, 2012* -
## chemistry

How much energy (in kJ) is released when 16.4 g of steam at 121.5 degrees C is condensed to give liquid water at 60.5 degrees C? The heat of vaporization of liquid water is 40.67 kJ/mol and the molar heat capacity is 75.3 J/(K*mol) for the liquid and 33.6

*asked on January 24, 2012* -
## quadratic equations

can you solve the equation using the quadratic formula x2 + 3x = 7? Explain and provide an exact answer.

*asked on January 17, 2012* -
## calculus

find the slope of the tangent line at the point P(1,1) on the graph of e^x-y=2x^2-y^2

*asked on January 17, 2012* -
## physiology

True or False The secretion of GnRH, FSH, and LH are pulsatile instead of continuous?

*asked on December 4, 2011* -
## physics

A propeller spins at 1850 rev/min. (a) What is the angular velocity in rad/s? (b) What is the angular displacement of the propeller in 4.10 s?

*asked on November 28, 2011* -
## math

sig figs for.. 1.399 x by 10-3 0.0763 m2 212.080 g 673.133 K 6.69808e+06 cm

*asked on October 2, 2011* -
## Art

What elements of painting are important to Renaissance artists?

*asked on September 17, 2011* -
## English

Is this a correct use of a semi-colen?: "However Petra was taken over in 100 CE by the Romans, and was still occupied during the Byzantine period; but it soon became not as much of an importance after that, besides being used as a fort for the Crusaders in

*asked on April 19, 2011* -
## chemistry

what mass of K2SO4 would you measure out to prepare 550 mL of a 0.76 M solution?

*asked on February 7, 2011* -
## chemistry

using the lewis dot structures, predict the formula for the compound formed between lithium and chlorine.

*asked on December 5, 2010*