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What is a precipitate?

1. AA liquid that forms when a solid melts
2. BA substance that speeds up a reaction
3. CA gas that bubbles out when two solutions are mixed
4. DAn insoluble solid that forms when two solutions react

Apa rumus kimia air?

1. AH₂O
2. BH₂O₂
3. COH
4. DHO₂

Charles's law describes the relationship between which two properties of a gas, at constant pressure?

1. AVolume and temperature
2. BDensity and mass
3. CPressure and number of moles
4. DPressure and volume

Drops of water form on the outside of a glass of ice water. Where does this water come from?

1. AThe ice evaporates through the glass
2. BThe glass releases water when it gets cold
3. CWater leaks through tiny holes in the glass
4. DWater vapour in the air condenses on the cold glass

A piece of metal has a density of 8 g/cm³ and a volume of 5 cm³. What is its mass?

1. A1,6 g
2. B40 g
3. C13 g
4. D0,625 g

Berapa mol terdapat dalam 88 g karbon dioksida (massa molar 44 g/mol)?

1. A0,5 mol
2. B3872 mol
3. C2 mol
4. D44 mol

5,85 g of NaCl (molar mass 58,5 g/mol) is dissolved to make 500 mL of solution. What is the molarity?

1. A2 M
2. B0,2 M
3. C0,05 M
4. D0,1 M

Setarakan persamaan __C₃H₈ + __O₂ → __CO₂ + __H₂O. Berapa koefisien O₂?

1. A4
2. B10
3. C3
4. D5