Patricia is exploring ionic equations. She writes the complete ionic equation for a reaction. What is the difference between a molecular equation and an ionic equation?

Gram molecular mass is the mass of:

Yusuf is calculating the formula mass of Al2O3. He knows Al=27 and O=16. What is the formula mass?

Chloe is calculating the molecular mass of glucose (C6H12O6). She knows the atomic masses: C=12, H=1, O=16. What is the molecular mass of glucose?

Waseem is studying the empirical formula of a compound. He analyzes a compound and finds its mass composition: 32% sulfur and 48% oxygen. What is the empirical formula? (S=32, O=16)

Sam is calculating the number of particles in 2 moles of CO2. How many molecules of CO2 are present?

Stoichiometric coefficients are obtained from:

One mole of any substance contains:

Ming is studying empirical and molecular formulas. He knows that the empirical formula is the simplest ratio of atoms, while the molecular formula is the actual number. For a compound with empirical formula CH and molecular mass 78, what is the molecular formula? (C=12, H=1)

To convert mass into moles, we divide by:

George has 2 moles of water (H2O). He wants to calculate the number of water molecules. How many molecules does he have?

How many moles are present in 22 g of CO2?

Zara has 5 moles of NaCl. How many formula units of NaCl does she have?

Gram atomic mass is equal to:

Xia is writing the name for Fe2O3. She knows that iron can have multiple oxidation states. What is the correct name for Fe2O3?

The mass of one mole of carbon-12 is:

Stoichiometry helps chemists to:

The reactant that limits the amount of product formed is called:

Julia is studying gram formula mass. She wants to find the gram formula mass of CaCl2. (Ca=40, Cl=35.5)

Lara is calculating the number of molecules in 0.5 moles of CO2. How many molecules?

Fatima is writing the chemical formula for sodium oxide. Sodium has a +1 charge and oxide has a -2 charge. What is the formula?

Which law forms the basis of stoichiometry?

Uma is calculating the gram atomic mass of sodium. She knows that the atomic mass of Na is 23 amu. What is the gram atomic mass of sodium?

David is studying an ionic compound, NaCl. He wants to calculate the formula mass. He knows Na=23 and Cl=35.5. What is the formula mass of NaCl?

Emma is studying the structural formula of water. She knows that water has a bent structure. Which of the following is a structural formula for water?

The chemical formula shows:

Patricia is balancing the equation: Al + O2 → Al2O3. What is the correct balanced equation?

Which compound has the empirical formula CH?

Rachel is studying molecular and structural formulas. She knows that the molecular formula gives the actual number of atoms, but not the arrangement. Which formula shows the arrangement of atoms in a molecule?

Hina is learning about Avogadro's number. She wants to know how many atoms are in one mole of carbon. What is the number?