ใบงาน เคมีสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What are the usual units of molar mass?

1. Amol/L
2. Bg/L
3. Cg/mol
4. Dmol/g

Which technique is used to separate the different coloured dyes in an ink?

1. AChromatography
2. BMagnetism
3. CFiltration
4. DDistillation of the ink

What do the letters STP stand for in gas chemistry?

1. AStandard temperature and pressure
2. BSpecific temperature and particles
3. CStable temperature point
4. DStandard time and pressure

For the gas reaction N₂ + 3H₂ ⇌ 2NH₃, what is the effect of increasing the pressure?

1. AThe equilibrium shifts to the left, toward N₂ and H₂
2. BThe equilibrium shifts to the right, toward NH₃
3. CThe NH₃ breaks down completely
4. DThere is no effect on the equilibrium

มวลโมลาร์ของน้ำคือเท่าใด (H = 1 g/mol, O = 16 g/mol)

1. A18 g/mol
2. B32 g/mol
3. C17 g/mol
4. D10 g/mol

คาร์บอนไดออกไซด์ 88 g (มวลโมลาร์ 44 g/mol) มีกี่โมล

1. A44 mol
2. B3872 mol
3. C0.5 mol
4. D2 mol

A patient's temperature is 104 °F. What is it in degrees Celsius?

1. A58 °C
2. B43 °C
3. C40 °C
4. D72 °C

Each C=O bond in carbon dioxide is polar, yet the CO₂ molecule is nonpolar. Why?

1. AThe bonds are ionic, not covalent
2. BCarbon and oxygen have the same electronegativity
3. CCarbon has lone pairs that cancel the dipoles
4. DThe molecule is linear, so the two bond dipoles cancel out