CSAT Suneung · Chemistry I
Atoms, moles and reactions
10 practice questions, each with the answer and an explanation.
Practise Atoms, moles and reactions now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 10 questions
- How many moles are in 36 g of water? (H = 1, O = 16)
- What is the mass of 0.5 mol of carbon dioxide? (C = 12, O = 16)
- How many molecules are in 0.2 mol of a gas? (Avogadro's number = 6.0 x 10^23)
- What is the molar concentration of a solution containing 4 g of NaOH in 500 mL of solution? (Na = 23, O = 16, H = 1)
- Balance the equation: how many moles of oxygen are needed to burn 1 mol of propane, C3H8, completely?
- What volume of hydrogen gas at standard conditions (22.4 L per mole) is produced when 0.1 mol of zinc reacts completely with excess acid?
- An element X has an atomic number of 17. Which electron configuration is correct for X?
- Ionic bonds are formed between
- Which molecule has a linear shape?
- What is the oxidation number of manganese in KMnO4?
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