Chemistry

Convert 2.50 L to mL.

Write 0.0006022 mol in scientific notation.

Add 12.11 g + 18.0 g + 1.013 g using the correct number of decimal places.

A sample has a mass of 39.6 g and a volume of 12.0 mL. Find its density.

How many protons, neutrons, and electrons are in a neutral Na-23 atom?

Chlorine is 75.78% Cl-35 with a mass of 34.969 amu and 24.22% Cl-37 with a mass of 36.966 amu. Find the average atomic mass.

How many moles are in 3.011 * 10^23 molecules of H2O?

Find the molar mass of CaCl2.

How many moles are in 22.0 g of CO2?

Find the percent by mass of oxygen in H2O.