Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What is osmosis?

1. AThe breaking of a solid into ions
2. BThe dissolving of a gas in a liquid
3. CThe movement of solute particles against a gradient using energy
4. DThe movement of water across a semipermeable membrane

Where do the mole ratios used in stoichiometry come from?

1. AThe coefficients of the balanced equation
2. BThe physical states of the substances
3. CThe subscripts in each formula
4. DThe molar masses of the reactants

What does the octet rule state?

1. AAtoms tend to gain, lose or share electrons to get 8 outer electrons
2. BAn atom can form a maximum of 8 covalent bonds
3. CEvery stable atom has exactly 8 protons in its nucleus
4. DEvery stable molecule contains exactly 8 atoms

0,5 mol of KCl is dissolved to make 250 mL of solution. What is its molarity?

1. A0,125 M
2. B0,5 M
3. C2 M
4. D125 M

In 2KClO₃ → 2KCl + 3O₂, how many moles of O₂ form from 4 mol of KClO₃?

1. A4 mol
2. B6 mol
3. C8 mol
4. D3 mol

Bir klor-37 atomunun 17 protonu var. Kaç nötronu vardır?

1. A54
2. B17
3. C37
4. D20

An isotope has a half-life of 8 days. How long does it take for 100 g to decay to 12,5 g?

1. A64 days
2. B32 days
3. C16 days
4. D24 days

What fraction of a radioactive isotope remains after three half-lives?

1. A1/3
2. B1/6
3. C1/8
4. D1/9