You have 1.486 × 1023 atoms of helium (He). How many moles of helium do you have?

The molar mass of methane is 16.04 g/mol. Given 81.33 g of methane, how many moles of methane do you have?

Sugar water in a recently stirred glass is an example of …

What is 1.2839 × 104 in decimal notation?

What is the common name of N2O?

What is the name of MgSO4 · 7 H2O?

What is the formula for hydroiodic acid?

What is the name of the acid, H3PO4?

What is the answer to the question below using the correct number of significant figures? 88.1 + 11.99 = ?

Find the average atomic mass of a sample of lithium that is 71.756% lithium-6 (6.04782 amu) and 28.244% lithium-7 (7.05648 amu).