Friday

September 30, 2016
Number of results: 122,357

**physics PLEASE helpp **

Find the net change in entropy when 213 g of water at 0.0C is added to 213 g of water at 96.9C.

*January 6, 2012 by melisa*

**physics**

Find the net change in entropy when 213 g of water at 0.0C is added to 213 g of water at 96.9C.

*January 6, 2012 by melisa*

**physics**

Find the net change in entropy when 213 g of water at 0.0C is added to 213 g of water at 96.9C.

*January 7, 2012 by melisa*

**Math**

I need to understand how to do the problem and not the answer. P.S. bobpursley, no offense but I didn't understand what your response meant. That information I already know but I need to know how to do the problem to get 213 as the answer. Anida won the class election by ...

*May 24, 2009 by Ninja*

**Chemistry**

Calculate the standard enthalpy change for the reaction 2A+B⇌2C+2D Use the following data: Substance ΔH∘f (kJ/mol) A -251 B -403 C 213 D -511 My thoughts: [(2)(-511)+(213)(2)]-[(2)(-251)+(-403)]=309kJ (but apparently that is not the correct answer) What did I ...

*November 15, 2015 by Miranda*

**statistics**

The data listed below shows the number of hospitals in each state, using the data, complete a frequency table using 8 classes. all the data has been ordered from smallest to largest. 7,8,12,14,14,15,15,15,19,21,23,25,29,30,34,36,36,38,40,40,51,53,55,56,59,61,63,71,73,74,75,76,...

*February 22, 2012 by Justin*

**statistics**

The data listed below shows the number of hospitals in each state, using the data, complete a frequency table using 8 classes. all the data has been ordered from smallest to largest. 7,8,12,14,14,15,15,15,19,21,23,25,29,30,34,36,36,38,40,40,51,53,55,56,59,61,63,71,73,74,75,76,...

*February 22, 2012 by Justin*

**math**

what is 27.4 213.321 39.38

*May 23, 2009 by ice*

**Math 213**

how to compute 10 - 3 -12

*February 10, 2014 by rabia*

**mathematics**

A retail jeweler sells a pair of gold earrings for $213.90. The jeweler uses a 130% markup based on cost. Based on this information, what was the wholesale cost of the earrings? A. $93.00 C. $276.90 B. $164.53 D. $278.07 213.90 divided by 130%=164.53 B

*May 14, 2009 by Emma*

**Statistics**

The mean and median sales prices of new homes sold in the U.S. in November 2010 were $213,000 and $268,000. Which of these numbers is the mean and which is the median? Explain how you know. I'm assuming the median is $213,000 and the mean is $268,000. However, I'm just ...

*May 22, 2013 by Anonymous*

**Math**

Aaron has two types do iodine in his lab. He has brand 213 iodine, which costs 36 cents per ounce. He also has brand 856 iodine, which costs 1.58$ per ounce. How many ounces of brand 213 should be used if he has 63 ounces of brand 856 and wants to make a mixture that costs ...

*October 10, 2013 by Elizabeth*

**math**

simplify 144+(-317)+213 =?

*December 9, 2011 by Anonymous*

**MTH 213-Elementary Math**

Let U = {u, n, i, t, e} A = {n, i, t} B = {n, e} C = {u, n, i, t, e} D = {u, e} Find each of the following:

*November 30, 2009 by Ta*

**math :D**

which of the following is closest in value to .213 f-1/2 g-1/3 h-1/4 j-1/5 k-1/6 answer:j-1/5

*September 1, 2010 by anonymous1*

**math**

144+(-317)+213 i think the answer is 40

*February 5, 2011 by :P smile*

**3rd grade math**

what is the standard form of 213

*March 18, 2015 by Anonymous*

**Math**

Given ^213 x=58, find the positive value of x

*June 29, 2015 by Christopher*

**Physics**

Jack rides his 213kg motor cross bike 25.3m up a 30.0 degree slope at a constant speed. what is the energy his bike expends if the frictional force opposing its movement is one-tenth its weight? Are you sure the mass is 213 kg? Shouldn't it be 21.3 kg? Or does that include ...

*August 3, 2007 by Jarin*

**chemistry**

Calculate the change in entropy (ΔS˚) of reaction (J/K) for the equation as written. BaCO3(s) → BaO(s) + CO2(g) Table: S (J/(K mol)) BaCO3(s) = 112 BaO(s) = 70.3 CO2(g) = 213.7 So the answer is -41.7 I thought to find the entropy of reaction you subract the ...

*February 23, 2013 by Carter*

**Math 213 Elementary Math**

Use the definition of less than to show each of the following: a. 2 < 4 b. 3 < 100 c. 0 < 3

*August 5, 2009 by Shay*

**Math 213 Elementary Math**

List all the subsets of {2, o, t}.

*August 4, 2009 by Shay*

**Math 213 Elementary Math**

1. List all the subsets of {2, o, t}.

*August 5, 2009 by Shay*

**math 213**

Tell whether each of the following is true for all sets A, B If false, give a counterexample. A

*August 18, 2012 by susan*

**math 213**

The following sets of ordered pairs are functions. Give a rule that could describe each function. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,7),(5,26)}

*August 18, 2012 by susan*

**Math 213**

Please....! There are two questions here. What, if anything, is wrong with the following numerals? A. 306four B. 1023two

*January 20, 2011 by Jonathan*

**Math**

102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219

*January 24, 2011 by Jay*

**CHEMISTRY**

During an experiment, a student adds 1.23 g of CaO to 200.0 mL of 0.500 M HCl. The student observes a temperature increase of 5.10 C. Assuming the solution\'s final volume is 200.0 mL, the density if 1.00 g/mL, and the heat capacity is 4.184 J/(gC), calculate the heat of ...

*June 26, 2013 by imstupid*

**math 213**

Determine all possible digits to fill in the blanks to make each of the following true. 9 |482____ 6|24____35 4 |63____

*December 5, 2009 by alicia*

**Math 213**

Examine several newspapers and magazines and describe at least three examples of functions that appear. What is the domain and range of each function?

*April 13, 2010 by dan*

**math**

102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219 is not +3+6+3+6 TRY it yourself

*January 24, 2011 by Jay*

**math**

can some please solve everyone because i do get it. 102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219

*January 24, 2011 by Jay*

**math**

can some please solve everyone because i do get it. 102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219

*January 24, 2011 by Jay*

**Math**

The sequence {an} satisfies a0=1,a1=213, and an=2an−1+an−2 for all n≥2. Let S=∑i=1 to infinity a[i-1]/(a[i]^2-a[i-1]^2) What is the value of 1/S

*June 24, 2013 by Nick*

**mth/213**

Let U = {u, n, i, t, e} A = {n, i, t} B = {n, e} C = {u, n, i, t, e} D = {u, e} Find each of the following: (a) A B

*November 1, 2009 by marina*

**math**

Round each number to the place value indicated by the digit in bold. a. 3587 the 5 b. 148,213 the 1, in 148 c. 23,785 the 3 d. 2,357 the 5

*August 19, 2012 by Rachel*

**Math-algebra-Steve**

The sequence {an} satisfies a0=1,a1=213, and an=2an−1+an−2 for all n≥2. Let S=∑i=1 to infinity a[i-1]/(a[i]^2-a[i-1]^2) What is the value of 1/S?

*June 24, 2013 by Nick*

**Chemistry**

how many grams of oxygen are in 213.5g Fe2O3?

*January 17, 2011 by Felipe*

**Math**

Es time the answer below. A). 3 10/11 +2 1/101 Chose 4 or 5 or 6 or 7 B) 5 2/47 - 2 1/35. Chose 2 or 3 or 4 or 5 C) 6 17/18 * 7 3/290. Chose 42or 49 or 63or 213

*November 25, 2013 by Pietro*

**chemistry**

how many grams of sodium oxalate, Na2C2O4, could be obtained from 213 g of C6H6?

*February 10, 2014 by hkgdfjtrth*

**math**

Round 0.681 to the nearest tenth. question 2: Estimate 17.64+9.213 by first rounding each number to the nearest tenth.

*May 3, 2012 by i need help please2*

**chemistry**

How many milliliters of 0.246 M HNO3 should be added to 213 mL of 0.00666M 2,2'-bipyridine to give a pH of 4.19?

*May 26, 2010 by amit*

**MATH 213**

13. Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

*November 1, 2009 by brina*

**MTH 213-Elementary Math**

Write each of the following in the indicated base. (a) 1021 three to base ten. ________________________ (b) 534 ten to base twelve __________________________

*December 5, 2009 by Ta*

**Physics**

are water waves at the beach with a velocity of 1.75m/s and a wavelength of 3.213 and frequency of 1/1.84Hz considered fast?

*August 19, 2015 by Courtney*

**Math 213 Elementary Math**

2. Let U = {x x is a female} A = {x x is a mathematician} B = {x x owns a pickup} C = {x x owns a dog}

*August 5, 2009 by Shay*

**College Math 213**

write each of the following in the indicated base. 1011two to base ten 1574 to base twelve MCMLIV to base ten

*December 6, 2009 by Debra*

**math **

please check my answers 1.Write each of the following as a common fraction or mixed number.4.0171=. 4 171/10,000 2.Arrange in order from smallest to largest.2.05,25/10 , 2.0513, 2.059,251/100 , 2.0515, 2.052, 2.051 3. 27.4 213.321 39.38 add=280.101 4.45.6 8.75subtract...

*September 16, 2009 by p*

**Chemistry **

Consider the following reaction: CaCO3(s)→CaO(s)+CO2(g). Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.) for 310K,1070,1470 this is...

*May 19, 2014 by Ty*

**math**

Two congruent circles Γ1 and Γ2 each have radius 213, and the center of Γ1 lies on Γ2. Suppose Γ1 and Γ2 intersect at A and B. The line through A perpendicular to AB meets Γ1 and Γ2 again at C and D, respectively. Find the length of CD.

*June 11, 2013 by raja harishchandra*

**math**

At age 5, how much would you have to save per month to have $1 million in your account at age 65, if your investment rate was 10% per year? Assume no taxes and compounding on a monthly basis. $213.30 $21.23 $274.60 can't be done with these assumptions.

*July 24, 2008 by alisha*

**Math 213 Elementary Math**

20. Think of a number. Add 7. Double the result. Subtract 8. Double the result. Add 12. Divide by 4. Subtract 6. Your answer will be the original number. Explain how this trick works.

*August 7, 2009 by Shay*

**Chemistry**

What is the molarity of a solution made by mixing 213.6 ml of 1.5 M NaCl with 328 ml of 4.3 M NaCl?

*November 8, 2014 by Jeremy*

**Algebra**

A = - 113 and A = -213 20 40 this is an arithmetic sequence and i have to find the explicit formula and the recursive formula how do i do that?

*October 1, 2008 by Rebkea*

**math**

a retail jeweler sells a pair of gold earrings for $213.90. The jeweler uses a 130% markup based on cost. Based on this information what was the wholesale cost of the earrings?

*July 11, 2009 by shannon*

**math**

a retail jeweler sells a pair of gold earrings for $213.90. The jeweler uses a 130% markup based on cost. Based on this information, what was the wholesale cost of the earrings

*November 9, 2012 by Anonymous*

**math**

3 to the 5th power / 3 to the 2nd power= ?? 22 24 23 26 27 2100 213 (3^5) / (3^2) = 27 3 to the 5th power is 3 x 3 x 3 x 3 x 3. ________________________________________ 3 to the 2nd power is 3 x 3. Cancel two of the 3s on the top and the bottom. What do you have left? thanks ...

*August 21, 2007 by Rodger*

**Math**

Larry has an annual return of $213.00 from $3000.00 invested at simple interest. One at 5% and the other at 8%. How much is invested at each rate. (Hint, Interest earned = amount invested x rate of interest.)

*September 10, 2012 by Lyn*

**science**

The density of liquid oxygen at its boiling point is 1.14 \rm{kg/L} , and its heat of vaporization is 213 \rm{kJ/kg} . How much energy in joules would be absorbed by 4.0 L of liquid ox

*February 27, 2012 by ashley*

**math 213**

The effect of depreciation can be computed using a formula similar to the formula for compound interest. a. Assume depreciation is the same each month. Write a problem involving depreciation and solve it. b. Develop a general formula for depreciation defining what each ...

*April 19, 2010 by billy bob*

**math 213**

Kahlil said that using the equation he can find a similar equation for Examine his argument. If it is correct, supply any missing steps or justifications; if it is incorrect, point out why. = a2 - 2ab + b2 = a2 + 2a1-b2 + 1-b22 1a - b22 = 3a + 1-b242 2ab + b2, 1a - b22. 1a + ...

*April 8, 2011 by christy*

**Chemistry**

You dissolve 0.213 g of acid in 25.0 mL of water. To react the acidic solution to the endpoint you add 23.80 mL of 0.1024 M NaOH. Determine the molar mass of the acid.

*October 28, 2011 by Andres*

**Chemistry**

You dissolve 0.213 g of acid in 25.0 mL of water. To react the acidic solution to the endpoint you add 23.80 mL of 0.1024 M NaOH. Determine the molar mass of the acid.

*October 28, 2011 by Andres*

**Chemistry**

You dissolve 0.213 g of acid in 25.0 mL of water. To react the acidic solution to the endpoint you add 23.80 mL of 0.1024 M NaOH. Determine the molar mass of the acid.

*October 28, 2011 by Andres*

**chem**

The heat of combustion of methane is 213 kcal/mol. How many kcal of energy are released when 22.5 moles of CH4 burns in an excess of oxygen gas?

*March 11, 2016 by banana*

**math 213**

Tell whether each of the following is true for all sets A, B If false, give a counterexample. a. A-B= A-0 (with slashed O) b. AUB (with line over AUB) = AUB (with line over A and a line over B)

*August 18, 2012 by susan*

**MTH 213-Elementary Math**

(a) Illustrate a one-to-one correspondence between the following sets: N = {1, 2, 3, 4,. . . , n,. . .} F = {4, 9, 14, 19, 24,. . .} (b) In your correspondence, what element of F corresponds to 57? Explain why. (c) In your correspondence, what element of F corresponds to n?

*November 30, 2009 by Ta*

**math 213**

The amount of money in cents in a jar containing some nickels and d dimes and some quarters if there are 4 times as many nickels as dimes and twice as many quarters as nickels

*August 18, 2012 by susan*

**math**

289 min = 4 hr and 49 min 213 min = 3 hr and 33 min 345 min = 5 hr and 45 min 197 min = 3 hr and 17 min I have to change these minutes on the left to hours and minutes. could you check if I have them correctly. Thank you for your help

*April 26, 2010 by st*

**4th grade**

Estimate the answers: a) 3 10/11 + 2 1/101 = Choose 4,5,6,or 7 b) 5 2/47 - 2 1/35 = Choose 2,3,4, or 5 c) 6 17/19 x 7 3/290 = Choose 42,49,63 or 213 I need to choose the best answer to this problems. Please help me with this. Thanks

*November 30, 2009 by Ili*

**Chemistry**

Consider the titration of 41.5 mL of 0.213 M HCl with 0.123 M KOH. Calculate the pH of the resulting solution after the following volumes of KOH have been added. (Assume that all solutions are at 25C.) (a) 0.0 mL (b) 10.0 mL (c) 40.0 mL (d) 80.0 mL (e) 100.0 mL

*March 13, 2013 by Margaret*

**math**

A rectangular room has an area of 120ft squared. Marge drew a scale drawing of the pool using the scale 1.5cm=2ft. What was the area of the scale drawing? a) 213.3cm2 b) 67.5cm2 c)53.3cm2 d)1.5cm2 I don't think any of the choices match the answer (90cm2)?

*April 2, 2013 by pitigoiu*

**science**

The density of liquid oxygen at its boiling point is 1.14 \rm{kg/L} , and its heat of vaporization is 213 \rm{kJ/kg} . How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized?

*September 7, 2010 by Brianna*

**Chemistry**

The density of liquid oxygen at its boiling point is 1.14 \rm{kg/L} , and its heat of vaporization is 213 \rm{kJ/kg} . How much energy in joules would be absorbed by 2.0L of liquid oxygen as it vaporized?

*September 15, 2012 by jazz boone*

**chemistry**

hoose any two temperatures and corresponding vapor pressures in the table given, and use those values to calculate for dichloromethane (in ). () () 263 80.1 273 133.6 283 213.3 293 329.6 303 495.4 313 724.4

*January 20, 2010 by Mariah*

**math 213 #18**

A student claims that every prime greater than 3 is a term in the arithmetic sequence whose nth term is 6n + 1 or in the arithmetic sequence whose nth term is 6n 1. Is this true? If so why?

*April 13, 2010 by dan*

**PHYSICS**

A model rocket is constructed with a motor that can provide a total impulse of 25.5 N s. The mass of the rocket is 0.213 kg. What is the speed that this rocket achieves when launched from rest? Neglect the effects of gravity and air resistance.

*October 21, 2010 by ZAC*

**physics**

A model rocket is constructed with a motor that can provide a total impulse of 25.5 N s. The mass of the rocket is 0.213 kg. What is the speed that this rocket achieves when launched from rest? Neglect the effects of gravity and air resistance.

*October 21, 2010 by josh*

**MATH**

Construct both an ungrouped and a grouped frequency distribution for the data given below: 207 211 204 208 202 203 211 202 205 212 210 212 204 199 204 201 213 200 204 207

*November 11, 2011 by Jennifer*

**physics**

An archer puts a 0.34 kg arrow to the bowstring. An average force of 213.1 N is exerted to draw the string back 1.48 m. The acceleration of gravity is 9.8 m/s 2 . Assuming no frictional loss, with what speed does the arrow leave the bow? Answer in units of m/s

*December 13, 2012 by Anonymous*

**Math 213 Elementary Math**

Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Eds friends, Stacey, eats chocolate exclusively. How many different ...

*August 4, 2009 by Shay*

**Math 213 Elementary Math**

Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Eds friends, Stacey, eats chocolate exclusively. How many different ...

*August 4, 2009 by Shay*

**Math 213 Elementary Math**

Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Eds friends, Stacey, eats chocolate exclusively. How many different ...

*August 5, 2009 by Shay*

**Math 213 Elementary Math**

Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Eds friends, Stacey, eats chocolate exclusively. How many different ...

*August 5, 2009 by Shay*

**chemistry**

Calculate the value of T delta S (KJ) of reaction for the equation as written. (It is given that the standard enthalpies (J/K mol)are CH3COOH=159.8, O2=205.138, CO2=213.7, H20=69.91) CH3COOH(l) + 2 O2(g) --> 2 CO2(g) + 2H2O(l)

*March 9, 2008 by Anonymous*

**ALGEBRA**

A car dealer will sell you a used car for $7,542 with $542 down and payments of $213.27 per month for 36 months. What is the APR? (Use the formula on page 156. Round each answer to the nearest tenth.)

*May 20, 2012 by Daniel*

**Chemistry **

how to write a balanced equation for the following reactions with amounts of released or absorbed heat expressed in numbers within the equation 1 mole of methane with O2 yields CO2 and H2O and releases 213 kcal of heat

*October 28, 2015 by Tammy *

**math 2 questions need help**

At age 5, how much would you have to save per month to have $1 million in your account at age 65, if your investment rate was 10% per year? Assume no taxes and compounding on a monthly basis. $213.30 $21.23 $274.60 can't be done with these assumptions. After 20 years, 100 ...

*July 24, 2008 by alisha*

**Math**

The weekly rental cost of a 20 foor recreational vehicle is $129.50 plus $0.15 per mile. -Find a linear function that express the cost C as a function miles driven m. - What is the rental cost if 860 miles are driven? -How many miles were driven if the rental cost is $213.80?

*March 7, 2010 by Rony*

**chem 140 A**

The density of liquid oxygen at its boiling point is 1.14 , and its heat of vaporization is 213 . How much energy in joules would be absorbed by 3.0 of liquid oxygen as it vaporized? Express your answer numerically in joules.

*May 27, 2010 by Kathy*

**chemistry**

A mixture consisting of 0.150 M N2(g) and 0.612 M H2(g) reacts and then reaches equilibrium according to the equation: N2(g) + 3H2(g) ⇋ 2NH3(g) At equilibrium, the concentration of ammonia is 0.213 M. Calculate the concentration (molarity) of H2(g) at equilibrium to 3 ...

*May 9, 2013 by Johnny*

**Chemistry**

Calculate the entropy of formation (J/K mol) of CS2(l). The value of T delta S^0 for the equation as written is -16.7774 KJ/mol. (the given standard entropies are: O2= 205.138, CO2= 213.7, SO2= 248.22) CS2(l) + 3 O2(g) --> CO2(g) + 2 O2(g)

*March 10, 2008 by Anonymous*

**math**

18 Estimate 8128 /18 by first rounding each number so that it has only nonzero digit. 20. Find the digits in the tens place, in the tenths place, and in the ten thousandths place for the following number. 465.2587 21. Round 0.681 to the nearest tenth. 22. Estimate 17.64+9.213 ...

*May 2, 2012 by Faye *

**physics**

A 33.5 kg block m1 is on a horizontal surface, connected to a 6.50 kg block m2 by a massless string. The pulley is massless and frictionless. A force of 213.7 N acts on m1 at an angle of 33.7o. The coefficient of kinetic friction between m1 and the surface is 0.201. Determine...

*July 18, 2013 by Mary*

**Math**

Barb is going to cover a rectangular area 8 feet by 10 feet with rectangular paving blocks that are 4 inches by 8 inches by 2 inches to make a flat patio. What is the minimum number of paving blocks she will need if all the paving blocks will face the same direction? (Note: ...

*May 2, 2015 by Anonymous*

**math 213**

This season the basketball team has won 8 games and lost 4. (a) What is the basketball teams ratio of wins to loses? (b) What is the basketball teams ratio of wins to games played? (c) If the basketball team continues to win at this rate, how many of the remaining 3 game can...

*April 22, 2010 by sam*

**chemistry**

The reaction between solid sodium and iron(III) oxide is one in a series of reactions that inflates an automobile airbag. 6 Na(s) + Fe2O3(s) 3 Na2O(s) + 2 Fe(s) If 171.0 g Na and 213.5 g Fe2O3 are used in this reaction, what is the mass of excess reactant that remains after ...

*February 7, 2010 by tg*

**Chemistry**

The reaction between solid sodium and iron(III) oxide is one in a series of reactions that inflates an automobile airbag. 6 Na(s) + Fe2O3(s) 3 Na2O(s) + 2 Fe(s) If 171.0 g Na and 213.5 g Fe2O3 are used in this reaction, what is the mass of excess reactant that remains after ...

*February 9, 2010 by tdb*

**Math**

Using the following cash flows for projects A and B, use payback period, discounted payback period, NPV, IRR, and MIRR to see if these are good projects or not. > Project A: (283,000); 46,000; 89,000; 104,000; 123,000; 187,000; and 72,000 > Project B: (318,000); 72,000; ...

*September 27, 2014 by James*

**Chemistry**

Benzene, C6H6, reacts with nitric acid, HNO3. Two products are formed, one of which is water. The second product has a molar mass of 213 grams. The second product is composed of 33.8% carbon, 1.42% hydrogen, 19.7% nitrogen, and 45.1% oxygen. Write a balanced chemical equation ...

*April 17, 2015 by Melissa*