chem

Will someone help me with this problem, please?

Calculate the mass in grams of 1.20*10^24 molecules of CO2.

Well, convert it to moles of CO2.

number moles= 1.2*1024/avagnumber

Now, you take the molecular mass of CO2 (12 + 2*16) and multiply that by the number of moles.

I got 8.772717608E47

is that the answer?

No.
the number of moles is 2. 2(44)= xxx grams.

Okay, sorry for not showing my work. So I did 1.2*10^24/6.02*10^23 and got 1.99 (2). So now I multipy 2 times the molecular mass of CO2, which is 44. The answer is 88. 88 grams?

Yes, I got the same answer the first time:8.772717608E47

For my calculator, 8.772717608E47 =88, for some reason. For another problem, the answer was 68.71g and my calculator read 6.871096346E47.

  1. 👍 0
  2. 👎 0
  3. 👁 268
  1. !@#$%^& pop

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    1)The chemical formula for aspirin is C9H8O4. What is the mass of 0.40 mol of aspirin? How would I find this? 2)The gram molecular mass of oxygen is 16.0 g right? 3)How would I find the mass, in grams, of 3.01 x 10^23 molecules of

    asked by anonymous on July 31, 2007
  2. Chemistry

    What would be the steps to solving this problem? The aluminum sulfate hydrate [Al2(SO4)3 (times) xH2O] contains 8.20 % Al by mass. Calculate x, that is , the number of water molecules associated with each Al2(SO4)3 unit.

    asked by Amy~ on August 26, 2010
  3. Chemistry

    If a mothball (C10H8) has a mass of 1.32 grams, how many naphthalene molecules does it contain? If I'm right just multiply 1.32g by 6.022*10^23 and the answer is 7.949*10^23 molecules. Is this right?

    asked by Karisa (Check Answer) on March 23, 2016
  4. Chemistry

    You purchased a 5.00 pound bag of sugar (sucrose, C12H22O11) at the grocery last week to bake cookies. Conversion: 1 pound = 1 lb = 454 grams. a.How many grams of sucrose did you purchase? 454 grams (g) = 1 pound (lb) 454 g * 5 =

    asked by Chelsea on September 23, 2015
  5. General Chemistry

    Cinnamic alcohol is used mainly in perfurmery, particularly in soaps and cosmetics. Its molecular formula is C9H10O. a. Calculate the percent composition by masss of C, H, and O in cinnamic alcohol. b. How many molecules of

    asked by Kendra on May 17, 2010
  1. chemistry

    8.What is the mass of 4.56 moles of sulfur dioxide? 9.What is the mass of 4.56 molecules of sulfur dioxide? 10.How many formula units are in 0.456 grams of Ca3(PO4)2? 11.How many moles are in 1.5 x 10 ^23 atoms of fluorine?

    asked by grace on February 6, 2011
  2. Chem

    Molar mass, sometimes referred to as molecular weight, is the mass of one mole of a substance, and is usually expressed in A Liters B Grams C Density D Moles D? The mole is derived from the quantity of atoms in 12 grams of

    asked by Anonymous on June 15, 2020
  3. Chemistry

    In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction,

    asked by Melissa on November 24, 2017
  4. Chemistry

    In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction,

    asked by Melissa on November 24, 2017
  5. Chemistry

    In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction,

    asked by Melissa on November 24, 2017
  6. Chemistry

    What is the mass, in grams, of 7.18 x 10^24 molecules of chlorine?

    asked by Kristian on October 6, 2017

You can view more similar questions or ask a new question.