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What is an electrolyte?

1. AA gas that dissolves in blood
2. BA metal that conducts electricity as a solid
3. CA substance that forms ions and conducts electricity when dissolved in water
4. DA substance that dissolves as whole molecules without forming any ions

Standard atmospheric pressure (1 atm) is equal to how many millimetres of mercury?

1. A760 mmHg
2. B120 mmHg
3. C100 mmHg
4. D1000 mmHg

Berapa pH air murni pada 25 °C?

1. A0
2. B14
3. C1
4. D7

In a reaction at equilibrium, a product is continuously removed. What happens?

1. AThe reactants run out immediately
2. BThe reaction rate drops to zero
3. CMore product keeps forming as the equilibrium shifts to the right
4. DThe equilibrium shifts to the left to form more reactants

How should the volume of water in a graduated cylinder be read?

1. AAt any angle, from the middle of the cylinder
2. BFrom above the cylinder, at the top edge of the curved surface
3. CFrom below, at the highest point the water touches the glass
4. DAt eye level, from the bottom of the curved surface (meniscus)

What is the formula of sodium sulfate, made from Na⁺ and SO₄²⁻ ions?

1. ANa₄SO₂
2. BNa(SO₄)₂
3. CNaSO₄
4. DNa₂SO₄

Which phase change absorbs energy from the surroundings (is endothermic)?

1. ADeposition
2. BFreezing
3. CSublimation
4. DCondensation

2090 J of heat is added to 50 g of water (specific heat 4,18 J/g·°C). By how much does its temperature rise?

1. A41,8 °C
2. B10 °C
3. C20 °C
4. D5 °C