Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. -- i can calculate the formula mass but get confus

-- I can calculate the formula mass but get confused with the various conversions between different...

70.2K

Verified Solution

Question

Chemistry

-- I can calculate the formula mass but getconfused with the various conversions between different types ofunits. I have the correct answers but I am trying to learn how towork through the problems to get the correct answer.

10) A sample of talc, Mg3Si4O10(OH)2, has a mass of 0.664 g.Calculate the number of mmoles of Mg3Si4O10(OH)2.

11) A sample of gypsum, CaSO4•2H2O, has a mass of 22 g.Calculate the number of moles of CaSO4•2H2O.

12) A sample of potassium dichromate, K2Cr2O7, has a mass of 578Gg. Calculate the number of moles of K2Cr2O7.

13) A pure sample contains 660 moles of potassium dichromate,K2Cr2O7. What is the mass of the sample?

14) A pure sample contains 3.0 x 10-8 moles of gypsum,CaSO4•2H2O. What is the mass of the sample in units of ng?

15) A pure sample contains 8.8 x 10-2 moles of talc,Mg3Si4O10(OH)2. What is the mass of the sample?

16) A pure sample contains 1.5 moles of ammonium carbonate,(NH4)2CO3. What is the mass of the sample?

The answers are

10) 1.75 mmoles Mg3Si4O10(OH)2

11) 0.13 moles CaSO4•2H2O

12) 1.96 x 109 mol K2Cr2O7

13) 1.94 x 105 g K2Cr2O7

14) 5165 ng CaSO4•2H2O

15) 33.4 g Mg3Si4O10(OH)2

16) 144.1 g (NH4)2CO3

Answer & Explanation Solved by verified expert
4.0 Ratings (740 Votes)
10 molar mass ofMg3Si4O10OH2 3792657 gmmol that mean 1 mole ofMg3Si4O10OH2 3792657 gmno of mole massmolar mass0664 gmofMg3Si4O10OH2    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Operations Management
1.2K views

Someone posted from a discussion question.... (Respond to it) Three roles of the U.S Government in the...

Psychology
1.2K views

Explain what a fallacy is. What kind of mistake is someone making when they commit an...

Electrical Engineering
1.2K views

How is a megger test performed on an XLPE cable? Like, to what parts are the...

Accounting
1.2K views

It has been said that advances in information technology have made in both easier and more...

Basic Math
1.2K views

Verify the identity.secx-secx sinx = cos xTo verify the identity, start with the more complicated...

Basic Math
1.2K views

Determine the simple interest earned on $10,000 after 10 years if the APR is 3%.

Algebra
1.2K views

Given x 3x 6 and g x x 2 2 Part a Determine fog x...

Algebra
1.2K views

12 The coordinates of a function h x are shown in the table X 1...

Accounting
1.2K views

1. Explain following concepts. a Customer Equity, please use Zappos case....

Accounting
1.2K views

5.8 Which (if any) of the following could be a dividend for tax purposes? A...

Accounting
1.2K views

Based on a predicted level of production and sales of 21,000 units, a company anticipates...

Finance
1.2K views

Suppose the labour force of an economy is equal to 1,000 and the unemployment on...