General Chemistry

What is the unit for molecular weight?

Sodium (Na) and Chlorine (Cl) have atomic weights of 22.9 g/mol and 35.5 g/mol respectively. What is the molar mass of Sodium Chloride (NaCl)?

How many moles of Sodium Chloride (NaCl) are there in a 175 g sample?

What do we do next?

What is the primary ratio of 1.25 mol Iron (Fe) and 1.88 mol Oxygen (O)?

Is FeO_1.5 the final empirical formula of the substance?

What do we next?

What do we do next?

Carbon (C) has an atomic weight of 12.011 g/mol, Hydrogen (H) has 1.008 g/mol, and Oxygen (O) has 15.999 g/mol. What is the empirical mass of CH₂O?

We know that its molar mass is 90 g/mol and its empirical formula is CH₂O with a mass of 30.026 g/mol. What is the molecular formula of the compound?