1.やさしい
What does the octet rule state?
- AEvery stable atom has exactly 8 protons in its nucleus
- BAn atom can form a maximum of 8 covalent bonds
- CEvery stable molecule contains exactly 8 atoms
- DAtoms tend to gain, lose or share electrons to get 8 outer electrons
2.やさしい
同位体とは何か。
- A同じ元素で、陽子の数が異なる原子
- B異なる元素で、中性子の数が同じ原子
- C同じ元素で、中性子の数が異なる原子
- D電子を得たイオン
3.やさしい
What is the normal pH range of human arterial blood?
- A7.00 to 7.10
- B7.85 to 7.95
- C7.35 to 7.45
- D6.35 to 6.45
4.ふつう
__N₂ + __H₂ → __NH₃ を釣り合わせる係数はどれか。
- A2, 3, 2
- B1, 3, 2
- C1, 3, 1
- D1, 1, 1
5.ふつう
What is the formula of the hydroxide ion?
- AH₃O⁺
- BO²⁻
- COH⁺
- DOH⁻
6.ふつう
On an energy diagram, the products are at a lower energy than the reactants. What kind of reaction is shown?
- ANuclear
- BEndothermic
- CExothermic
- DReversible only
7.むずかしい
グルコースC₆H₁₂O₆ のモル質量はいくつか(C = 12、H = 1、O = 16 g/mol)。
- A29 g/mol
- B96 g/mol
- C180 g/mol
- D168 g/mol
8.むずかしい
Alkanes follow the general formula CₙH₂ₙ₊₂. What is the formula of the alkane with 4 carbon atoms?
- AC₄H₆
- BC₄H₁₀
- CC₄H₈
- DC₄H₁₂
解答
- 1. D · Atoms tend to gain, lose or share electrons to get 8 outer electrons
- 2. C · 同じ元素で、中性子の数が異なる原子
- 3. C · 7.35 to 7.45
- 4. B · 1, 3, 2
- 5. D · OH⁻
- 6. C · Exothermic
- 7. C · 180 g/mol
- 8. B · C₄H₁₀
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