How does increasing the concentration of a reactant in solution usually affect the reaction rate?
- AThe rate increases
- BThe rate decreases
- CThe reaction stops
- DThe rate stays the same
How does increasing the concentration of a reactant in solution usually affect the reaction rate?
Welke groep bevat de edelgassen, zoals helium en neon?
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Which substance is a non-electrolyte when dissolved in water?
What is the molar mass of sulfuric acid, H₂SO₄ (H = 1, S = 32, O = 16 g/mol)?
What percentage of the mass of water (H₂O, 18 g/mol) is hydrogen (H = 1 g/mol)?
Pepsin digests protein in the stomach at about pH 2, but it stops working once food moves into the small intestine, where the pH is higher. Why?
Na⁺, Mg²⁺, F⁻ and O²⁻ all have 10 electrons. Which ion is the largest?
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