정답이 있는 간호학 입학 시험 대비 화학 학습지

What is the molar mass of oxygen gas, O₂ (O = 16 g/mol)?

1. A32 g/mol
2. B16 g/mol
3. C48 g/mol
4. D8 g/mol

나트륨의 원소 기호는 무엇인가요?

1. AN
2. BSo
3. CNa
4. DS

What is gamma radiation?

1. AHigh-energy electromagnetic radiation with no mass or charge
2. BA stream of helium nuclei with a positive charge
3. CA fast stream of protons from the nucleus
4. DA slow-moving electron

2 M 용액 100 mL를 전체 부피 400 mL가 되도록 묽혔습니다. 새 농도는 얼마인가요?

1. A1 M
2. B2 M
3. C0.5 M
4. D8 M

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

1. AFrom above the cylinder, at the top edge of the curved surface
2. BAt any angle, from the middle of the cylinder
3. CAt eye level, from the bottom of the curved surface (meniscus)
4. DFrom below, at the highest point the water touches the glass

What percentage of the mass of water (H₂O, 18 g/mol) is hydrogen (H = 1 g/mol)?

1. AAbout 67%
2. BAbout 5.6%
3. CAbout 11%
4. DAbout 89%

H₂ 2 mol과 O₂ 2 mol을 섞어 2H₂ + O₂ → 2H₂O로 반응시킵니다. 한계 반응물은 무엇인가요?

1. A물, 생성물이기 때문이다
2. B수소, H₂ 2 mol은 O₂ 1 mol만 쓰기 때문이다
3. C산소, 수소보다 산소가 더 적기 때문이다
4. D둘 다 아니다, 양이 같기 때문이다

A sealed bag of crisps (potato chips) packed at sea level looks puffed up when it is carried to a high mountain. Why?

1. AThe gas inside the bag is heated strongly by the mountain sunlight
2. BThe outside air pressure is lower, so the gas inside expands
3. CThe bag becomes thinner and weaker at altitude
4. DMore gas is produced by the crisps at altitude