Monday
September 1, 2014

Homework Help: chemistry need help

Posted by bre bre on Tuesday, March 10, 2009 at 6:45pm.

Determine the number of moles of each specified atom or ion in the given samples of the following compounds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.)



a. O atom in 3.161x10^21 molecules of CO2
b. C atom in 3.161x10^21 molecules of CO2

c. O atom in 2.2222x10^24 molecules of CO2
d. K^+ ions in 5.324 *10^16 formula units of KNO2
e. CL^ - ions in 1.000 x 1o^14 formula units of MgCl2
f. N atoms in 2.000 * 10^14 formula units of Ca (NO3)2
g. O atoms in 4.999 x 10^25 formula units of Mg3(PO4)2

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - Determine the number of moles of each specified atom or ion in the ...
chemistry help - Determine the number of moles of each specified atom or ion in ...
Chemistry - 23. Ductility is the ability to be hammered into sheets.- F? 25. A ...
Bio - 1. An isotope is an atom of an element that varies in mass number due to ...
Chemistry - Posted by Angeline on Monday, April 20, 2009 at 5:35pm. A few ...
chemistry - 1. Need help Assigning oxidation numbers. Is it true that wehn ...
Chemistry - Write the chemical formulas for the compounds containing each of the...
Chemistry - Write the chemical formulas for the compounds containing each of the...
Chemistry - 6 separate questions. I have figured out the other 20 questions I am...
Chemistry (The Composition of an Atom) - In 1808, John Dalton wrote his atomic ...

Search
Members