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Which quantity is the same for 1 mole of any substance?

1. AThe mass in grams
2. BThe volume as a liquid
3. CThe number of particles
4. DThe number of atoms per molecule

At sea level, at what temperature does pure water freeze?

1. A−32 °C (−26 °F)
2. B100 °C (212 °F)
3. C32 °C (90 °F)
4. D0 °C (32 °F)

What is gamma radiation?

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

Reaksi Zn + 2HCl → ZnCl₂ + H₂ termasuk jenis reaksi apa?

1. APenggantian ganda
2. BPenguraian
3. CSintesis
4. DPenggantian tunggal

Which coefficients balance __KClO₃ → __KCl + __O₂?

1. A1, 1, 1
2. B1, 1, 3
3. C2, 2, 3
4. D2, 1, 3

Normal saline (0,9% NaCl) is used for IV fluids. How is it described compared with blood?

1. AHypotonic
2. BSaturated
3. CIsotonic
4. DHypertonic

Na⁺, Mg²⁺, F⁻ and O²⁻ all have 10 electrons. Which ion is the largest?

1. AF⁻
2. BNa⁺
3. CO²⁻
4. DMg²⁺

Zinc reacts as Zn + 2HCl → ZnCl₂ + H₂. What mass of zinc (65 g/mol) reacts completely with 50 mL of 2 M HCl?

1. A1,63 g
2. B6,5 g
3. C65 g
4. D3,25 g