Name the following ionic compound: MgSO₄*7H₂O

• magnesium sulfate * hexahydarte
• magnesium sulfate hexahydarte
• magnesium sulfate heptahydrate
• magnesium sulfate* heptahydrate

What is the correct formula for Sodium Oxide?

• NaO
• NaO₂
• Na₂O
• Na₂O₂

Tags

NGSS.HS-PS1-2

Name the following ionic compound: BeCl₂

• beryllium chlorine
• beryllium (II) chloride
• beryllium chloride
• beryllium dichloride

Na₂CO₃ · 10H₂O is known as sodium sulfate ______

• Hydroxide
• Hydrate
• Decahydrate
• None of the above

Name the following hydrate:  NaCl * 5H₂O

• sodium chloride 
• sodium monochloride pentahydrate
• sodium chloride pentahydrate
• pentahydrate

A 15.67 g sample of a hydrate of magnesium carbonate was heated to drive off the water. The mass was reduced to 7.58 g. What is the formula of the hydrate?

• MgCO₃ · 5H₂O
• MgCO₃ · 4H₂O
• MgCO₃ · 6H₂O
• MgCO₃ · 1H₂O

Tags

NGSS.HS-PS1-7

A compound is a hydrate when it...

• is composed of only hydrogen and oxygen
• is a state of water
• traps water inside of the compound
• repels water from the compound

An empirical formula:

• is a formula that calculates the coefficients of a compound in a balanced equation.
• is the simplest whole-number ratio of moles of elements in the compound.

A 4.175 gram sample of a certain hydrate of copper (II) sulfate, CuSO4•xH2O, is heated until all the water is driven off. The resulting anhydrous compound weighs 3.120 grams. What is the formula of the hydrate?

• CuSO4•H2O

• CuSO4•3H2O

• CuSO4•6H2O

• CuSO4•4H2O

Tags

NGSS.HS-PS1-7

A 5.018 gram sample of a certain hydrate of magnesium sulfate, MgSO4•xH2O, is heated until all the water is driven off. The resulting anhydrous compound weighs 2.449 grams. What is the formula of the hydrate?

• MgSO4•9H2O

• MgSO4•8H2O

• MgSO4•7H2O

• MgSO4•6H2O

Tags

NGSS.HS-PS1-7