Chemistry Solutions Library

Chemistry Solutions Library

Access over 27,166 Chemistry video and text solutions to help you complete your homework.

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27,166 solutions

Mole Concept

Q. Which statement below is true?a. The number of Ni atoms in 100 moles of Ni (s) is the same as the number of Ni atoms in 100 moles of nickel (II) ch...

Solved • Feb 11, 2016

Mole Concept

Q. One molecule of a compound weighs 2.03 x 10 -22 grams. Calculate the molar mass of this molecule. a. 3.37 x 10-46 g/mol b. 3.36 x 10-23 g/mol c....

Solved • Feb 11, 2016

Mole Concept

Q. What is the molar mass of calcium phosphate, Ca 3(PO4)2? a. 87.05 g/mol b. 215.21 g/mol c. 278.18 g/mol d. 279.21 g/mol e. 310.18 g/mol

Solved • Feb 11, 2016

Mole Concept

Q. How many moles of methanol are present in a 150.0 gram sample of methanol, CH3OH? a. 7.776 x 10 -24 moles b. 4.681 moles c. 5.172 moles d. 4806...

Solved • Feb 11, 2016

Mole Concept

Q. What mass (in kg) does 5.84 moles of Titanium (Ti) have? a. 0.352 kg b. 0.122 kg c. 0.820 kg d. 0.280 kg e. 0.632 kg

Solved • Feb 11, 2016

Mole Concept

Q. If 2.50 grams of an unknown compound contains 6.25 x 1019 molecules, what is its molecular mass? 

Solved • Feb 11, 2016

Mole Concept

Q. Which of the following equals the number of hydrogen atoms in 40 grams of methane? a. 1.5 x 10 24 b. 2.4 x 10 24 c. 6.0 x 10 24 d. 6.022 x 10 23

Solved • Feb 11, 2016