Chemistry Homework Help

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Mole Concept

Q. How many grams are there in 2.3×10^24 atoms of silver?

Solved • Mar 27, 2019

Mole Concept

Q. Calculate the mass in grams for 1.24 × 1022 molecules of bromine, Br2.

Solved • Mar 26, 2019

Mole Concept

Q. The amount of carbon moles in dry ice is 0.20mol.calculate the number of molecules of oxygen?

Solved • Mar 25, 2019

Mole Concept

Q. 1 mole of H2(g) has twice as many atoms as 1 mole of He(g).

Solved • Mar 24, 2019

Mole Concept

Q. What is the number of formula units in a 8.98 mol sample of FeCl3

Solved • Mar 24, 2019

Mole Concept

Q. A leak in the air conditioning system of an older car releases 41 g of CF2Cl2 per month. How much Cl is emitted into the atmosphere each year by this car?

Solved • Mar 23, 2019

Mole Concept

Q. What is the mass (in kg) of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

Solved • Mar 20, 2019