Saturday

December 3, 2016
Total # Posts: 1,876

**General Chemistry 1 college class **

The tomato is dropped. What is the velocity, , of the tomato when it hits the ground? Assume 82.7 of the work done in Part A is transferred to kinetic energy, , by the time the tomato hits the ground. Express your answer numerically in meters per second

*October 30, 2012*

**General Chemistry I**

The tomato is dropped. What is the velocity, , of the tomato when it hits the ground? Assume 82.7 of the work done in Part A is transferred to kinetic energy, , by the time the tomato hits the ground. Express your answer numerically in meters per second.

*October 29, 2012*

**Finance**

A company has identified the following investments as looking promising. Each requires an initial investment of $1.2 million. Which is the best investment?Question 4 options: A) a perpetuity that generates a cash flow at the end of year 1 of $100,000, has a growth rate of 1.25...

*October 25, 2012*

**math**

average attendance at a school's basketball games increased from 1000 to 1500 last year. One student said that represented a 150% increase. Explai the student's error. What was the actual percent increase?

*October 21, 2012*

**math**

average attendance at a school's basketball games increased from 1000 to 1500 last year. One student said that represented a 150% increase. Explain the studnets error. What was the actual percent increase

*October 21, 2012*

**math**

when is the absolute value of a difference equal to the difference of the absolute values? Explain

*October 21, 2012*

**math**

is the set of positive intgers the same as the set of nonegative integers? Explain?

*October 21, 2012*

**math**

explain which is more accurate: measuring to the nearest millimeter or to the nearest eighth of an inch

*October 21, 2012*

**math**

the sclae on a map is 1in:25mi. You measure 6.5in,between two towns what is the actual distance

*October 21, 2012*

**math**

When is the absolute value of a difference equal to the difference equal to the difference of the absolute values? Explain

*October 21, 2012*

**math**

is the set of positive integers the same as the set of nonnegative integers? Explain

*October 21, 2012*

**Math**

150 feet

*October 20, 2012*

**math**

is the set of positive integers the same as the set of nonegative integers? explain please

*October 18, 2012*

**math**

what are the subsets on -2.324 and the subsets for the square root of 46

*October 18, 2012*

**English**

Locate the complete gerund or infinitive phrase and identify its use. Her motive was to keep peace in the family. Verbal Phrase: Use:

*October 18, 2012*

**Language Arts**

He fell like a leaf tossed down the wind, down, down, with one cry that overtook Daedalus far away. When he returned, and sought high and low for the poor boy, he saw nothing but the bird-like feathers afloat on the water, and he knew that Icarus was drowned. How is this ...

*October 15, 2012*

**Math**

Find (fog)(2) f(x)=Squareroot 4-x; g(x)=1-3x^2 Find (gof)(-2) for the same problem.

*October 12, 2012*

**Math**

How do I add, subtract, divide, and multiply integers

*October 11, 2012*

**College Physics**

A 0.35 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 20° with the horizontal. Determine the speed of the stone. I've tried tan 20= gr/v^2 = (9.8)(.8)/v^2 = 4.7 m/s and that's not the correct answer (online ...

*October 10, 2012*

**Math**

"All Items 20% Off Marked Price" is a sign at a local golf pro shop. Create a function and then use it to determine how much one has to pay for each of the following marked items: a $9.40 hat, a $13 umbrella, a $65 pair of golf shoes, a $12.60 golf glove, a $750 set ...

*October 10, 2012*

**physics**

A catcher stops a 48.5 m/s pitch in his glove, bringing it to rest in 0.15 m. If the force exerted by the catcher is 803 N, what is the mass of the ball?

*October 8, 2012*

**math**

the figure represents a building in the shape of a regular hexagon. using the scale 1cm=177m, what is the perimeter of the building 1.1cm?

*October 4, 2012*

**math**

the figure represents a building in the shap of a regular hexagon. using th e scale 1cm=177m, what is the perimeter of the building 1.1cm?

*October 4, 2012*

**math**

the figure represents a building in the shape of a regular hexagon. using the scale 1cm=177m, what is the perimeter of the building 1.1cm?

*October 4, 2012*

**math**

the width of the scale drawing of the office is 2inches. if 1/2inches=3 feet. what is the actual width in feet of the office

*October 3, 2012*

**math**

the answers are a(20 b(30 c(120 d(180

*October 3, 2012*

**math**

mr. callaway needs to purchase enough grass seed to cover a 3000 square foot lawn and a 4200 square foot lawn. if 40 ounces of grass seed will seed a 2400 square foot lawn how many ounces does he need to seed both lawns

*October 3, 2012*

**English**

In persuasive writing, it is important to...?

*October 2, 2012*

**math**

1 and 1/2%

*October 2, 2012*

**math**

attorney gable charges 2500 and attorney mandel charges 1 1/2%

*October 2, 2012*

**math**

so would mr. gable be better

*October 2, 2012*

**math**

mr. and mrs. blank sold their house for $200000 and needed to hire an attorney to handle the closing procedures. attorney mr. gable charges a flat rate of $2500. attorney ms. mandel charges 1 1/2% of the cost of the house. which attorney would be cheaper for mr. and mrs. blank...

*October 2, 2012*

**math**

roberto paid $43.08 for 3 CDs. all 3 CDs were the same price. How much did each CD cost?

*October 2, 2012*

**Physics**

An airplane is flying with an air velocity of 850 km/h at 34 degrees n of e. The wind is blowing at 100 km/h at 20 degrees s of e. Find the ground velocity of the airplane.

*September 26, 2012*

**World History**

It's believed that the role of feasts in the Ice Age was to?

*September 24, 2012*

**physics**

39m/s

*September 23, 2012*

**algebra**

Susan had a $10 coupon for the purchase of any item. She bought a coat that was on sale for half its original price. After using the coupon, Susan paid $125 for the coat before taxes. What was the original price of the coat?

*September 19, 2012*

**algebra**

your internet provider offers two different plans. one plan costs $0.02 per email plus a $9 monthly service charge. the other plan costs $0.05 per email with no service charge. write a system of equations to model the cost of the two internet plans.

*September 18, 2012*

**physics**

A bullet is fired from a rifle that is held 4.6 m above the ground in a horizontal position. The initial speed of the bullet is 1130 m/s. There is no error in the velocity value. (a) Find the time it takes for the bullet to strike the ground. (b) Find the horizontal distance ...

*September 18, 2012*

**social studies**

The International Date Line is halfway around the world from the Prime Meridian (0 degrees longitude). Therefore it is at _____ degrees longitude. The International Date Line is, by international agreement, where a given day actually starts. East of the _______ east of the ...

*September 17, 2012*

**math**

Eva invested a certain amount of money at 5% interest and $1500 more than that amount at 17%. Her total yearly interest was $750. How much did she invest at each rate?

*September 16, 2012*

**math**

you are a shop owner who wants to market a new hat. the hat distributor will sell you one size at a reduced price. in one day you sell the following sizes: 8 1/4,8 1/2,6,7 1/4,7 1/4, 7,7 1/4,8,6 3/4,8 1/2,7 1/4, 8 1/4, 8 1/4,6 3/4,7 3/4 which size will you purchase for a ...

*September 16, 2012*

**Math**

two trains are traveling toward each other adjacent tracks. one of the trains 230 feet long and is moving at a speed of 60 miles per hour. The other train is 220 feet long and is traveling at the rate of 70 miles per hour. Find the time interval between the moment the trains ...

*September 14, 2012*

**Chemistry**

Could you possibly give me the formula? I would like to know how to do it (:

*September 14, 2012*

**Chemistry**

How many watts are in a kWh? Or how do you convert 30 kWh into joules/sec?

*September 14, 2012*

**chemistry**

Find the potential energy, V(r), and the magnitude of the force, | F |, associated with: (a) the interaction between a proton and an electron separated by a distance of 0.529 Å (b) the interaction between the nucleus of Neon (Ne) and an electron separated by a distance ...

*September 14, 2012*

**5th grade math**

whats the answer plz i need help

*September 13, 2012*

**Spanish-someone could check these **

DIRECTIONS: Write a complete sentence using the verb ser. 1. Andy García y Jimmy Smits / los Estados Unidos -Nosotora somos de los Estados Unidos 2.Ricky Martin / Puerto Rico -El es de Puerto Rico 3. Enrique y Julio Iglesias / España - Ellos es de España ...

*September 9, 2012*

**Spanish**

How do you conjugate the verb ser in different sentences?

*September 9, 2012*

** Spanish check**

Pedero es de Peru ¿de dónde eres soy tus amigos? Tu eres ser de Atlanta Mi profesora es de español ser Mexicano ser ustedes de Mexico ¿dónde sois vosotros ser de?

*September 9, 2012*

**Spanish**

Write a complete sentence in Spanish using the verb ser. 1.Andy García y Jimmy Smits / los Estados Unidos 2. Julia Álvarez / la República Dominicana 3. Enrique y Julio Iglesias / España

*September 9, 2012*

**English help**

what are the purpose of litotes?

*September 3, 2012*

**Chemistry**

how many grams if sulfur must be dissolved into 1L of water to make a 2 molar solution?

*August 28, 2012*

**English III**

what is the rhetorical appeal in this sentence? Pathos or ethos? "A geek, according to Webster's New World Dictionary, is a street performer who shocks the public by biting off heads of live chickens. It is a telling fact about our language and our culture that ...

*August 28, 2012*

**pre algebra**

what is the value of the expression? 15-6/3.2+7-1

*August 27, 2012*

**health**

Using it too 😂😅

*August 11, 2012*

**english**

mrs sue is this right

*August 5, 2012*

**english**

is it astronauts supposed to rest for eight hours but to excited to rest before leaving spaceship, astronauts took three hours to put on space equipment tv camera turned on so world could watch opened spaeship door 61/2 hours after landing armstrong got out first astrounauts ...

*August 5, 2012*

**english**

please organize these into a paragraph ;astronaauts supposed to rest for eight hours, but too excited to rest ;astronauts easily hopped high because moon has less gravity than earth ;opened spaceship door 61/2 hours after landing ;brought back to earth some moon rocks and soil...

*August 5, 2012*

**english**

hello mrs sue

*August 4, 2012*

**english**

mrs. sue or anybody

*August 4, 2012*

**english**

um is it appolo11 took off 9:32 a.m on July 16,1969 three astronauts: michael collins,neil armstrong, edwin aldrin traveled 244,930 and traveled 24,300mph lunar module Eagle carried armstrong and aldrin to moon's surface collins stayed in command module and orbited ...

*August 4, 2012*

**english**

can you please help me with the hold thing i got the first part

*August 4, 2012*

**english**

please organize these notes into a paragraph ;traveled 24,300 mph ;on landing, armstrong's heart rate 156 beats per minute ;lunar module eagle carried armstrong and aldrin to moon's surface ;three astronauts michael collins,neil armstrong, edwin aldrin ;traveled 244,...

*August 4, 2012*

**Chemistry**

Thank you very much! That's what I got. I appreciate it.

*July 30, 2012*

**Chemistry**

The only difference is the + and - for the dGrxn

*July 30, 2012*

**Chemistry**

. In a biochemical reaction, A + B-->C with äG = 30 kJ/mol. Which of the following reactions might be effectively coupled to this reaction so that it becomes more spontaneous? I. C + D are the reactants, and B + E are the products äG = -40 kJ/mol II. C + D are the...

*July 30, 2012*

**Chemistry**

What is the overall standard free-energy change for the following two reactions? A + B-->2C äG = äG1 C + D-->E äG = äG2 a)äG1 + äG2 b)äG1 + 2äG2 c)äG2 – äG1 d)2äG2 – äG1 e)äG1äG22

*July 30, 2012*

**Chemistry**

Yes, I got this one :)

*July 30, 2012*

**Chemistry**

If at a certain instant during the course of the reaction 2 NO2(g) + F2(g) ¨ 2 NO2F(g), the rate of formation of the product were 0.16 mol/L∙s, how fast would the F2 be disappearing (also in mol/L∙s) at that same instant in time? A) 0.16 mol/L∙s B) ...

*July 30, 2012*

**Chemistry**

If the rate of formation of ammonia is 0.345 M/s, what is the rate of disappearance of N2? 1/2N2(g)+3/2H2(g)-->NH3(g) a. 0.173 M/s b. 0.345 M/s c. 0.690 M/s d. 245 M/s e. 0.518 M/s

*July 30, 2012*

**Chemistry**

Given the following data, determine the rate constant of the reaction 2NO(g) + Cl2(g) 2NOCl(g) Experiment [NO] (M) [Cl2] (M) Rate (M/s) 1 0.0300 0.0100 3.4 x 10–4 2 0.0150 0.0100 8.5 x 10–5 3 0.0150 0.0400 3.4 x 10–4 a. 1.13 M –2s–1 b. 9.44 M –2s...

*July 30, 2012*

**Chemistry**

Heat transfer from the system to the surroundings has a large effect on äSsurr ___________. a. when the temperature of the surroundings is low. b. when the temperature of the surroundings is high. c. when the temperature of the system is low. d. when the temperature of ...

*July 30, 2012*

**Chemistry**

What is the entropy change to the surroundings when 1 mol of ice melts in someone’s hand if the hand temperature is 32°C? Assume a final temperature for the water of 0°C. The heat of fusion of ice is 6.01 kJ/mol. a. –188 J/K d. b. –22.0 J/K c. –19.7...

*July 30, 2012*

**Chemistry**

If 1 mol of ice melts at its melting point of 273 K, the entropy change for the ice is 22.0 J/K. If the ice melts in someone’s hand at 34°C, what is the change in the entropy of the universe? Assume a final temperature for the water of 0°C. The enthalpy of fusion ...

*July 30, 2012*

**Chemistry**

Indicate which of the following has the highest entropy at 298 K. 0.5 g of HCN 1 mol of HCN 2 kg of HCN 2 mol of HCN All of the above have the same entropy at 298 K.

*July 30, 2012*

**Chemistry**

The standard molar entropy of lead(II) bromide (PbBr2) is 161 J/mol • K. What is the entropy of 2.45 g of PbBr2? a. +1.07 J/K b. –1.07 J/K c. +161 J/K d. –161 J/K e. 0 J/K

*July 30, 2012*

**Chemistry**

Calculate DeltaS0 for the formation of 1 mol of HI(g) from its elements given the following information: S0[H2(g)] = 131 J/mol∙K S0[I2(s)] = 116 J/mol∙K S0[HI(g)] = 206 J/mol∙K. A) 82 J/K B) 165 J/K C) 247 J/K D) 329 J/K

*July 30, 2012*

**Chemistry**

For which reaction is delta Ssys > 0? A) CH4(g) + 2 O2(g) ¨ CO2(g) + 2 H2O(l) B) NH3(g) + HCl(g) ¨ NH4Cl(s) C) 2 NH4NO3(s) ¨ 2 N2(g) + O2(g) + 4 H2O(g) D) HCl(aq) + NaOH(aq) ¨ NaCl(aq) + H2O(l)

*July 30, 2012*

**math**

Use a table of trigonometric values to find the angle è in the right triangle in the following problem. Round to the nearest degree, if necessary. cos è = 0.8192 A = 45 H =?

*July 18, 2012*

**math**

jai can you help me with my one right below taylor i think i got the answer

*July 17, 2012*

**math**

-8 1/8=6 1/2p is the answer 52.8 does p =52.8

*July 17, 2012*

**math**

is k 1971.9 if not can you please help me

*July 17, 2012*

**math**

6 9/16k=31 13/32 i don't know the answer to this one really its hard

*July 17, 2012*

**math**

and can you check my bottom question i answered

*July 17, 2012*

**math**

i got -9.31

*July 17, 2012*

**math**

arjun whnts to buy a telescope that costs 330.69 how much change does he receive if he gives the cashier 340

*July 17, 2012*

**math**

i got -2.73

*July 17, 2012*

**math**

nicole wants to buy a sled for 37.27 she gives the cashier $40 how much cahnge does she receive

*July 17, 2012*

**math**

what is 270% of 2 inches

*July 17, 2012*

**math**

-3 1/2=7/4a

*July 17, 2012*

**math**

-9 1/4=-2x with steps please

*July 17, 2012*

**math**

ok thanks

*July 17, 2012*

**math**

i got $-4

*July 17, 2012*

**math**

heather had $23 to spend on three raffle tickets. after buying them she had 11. how much did each raffle ticket cost

*July 17, 2012*

**math**

thats what i had

*July 17, 2012*

**math**

a recipe for bread call for 5 1/6 cups of flour. matt accidentally put in 5 5/6 cups. how many extra cups did he put in?

*July 17, 2012*

**math**

how old am i if 400 reduced by 2 times my age is 236

*July 17, 2012*