일반화학 문제인데 도움이 필요합니다
1. The number of electrons in a neutral atom?
2. An isotype that has 35 protons, 35 electrons, and 46 neutrons (무엇을 구해야 하는지는 잘모르겠습니다)
3. The isotype 131 I(요오드-숫자는 원자번호랑 질량수?를 말하는듯)
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4. What is weight in grams of one acetylsalicy(?) acid molecule, C9H8O4
5. The fomula for iron oxide
6. _C4H10 + _O2 -> _CO2 + _H2O
7. Isotypes of the same element always have(역시 잘 모르겠습니다 문제가 여기까지라서요)
8. If 1.00L=1.06 quanters, how many quants are there 1.00 liters?
9. Mass:45g density:2.7g/cc, volume?
10. How many moles are there in 4.5g of Al2(SO4)
11. How many grams are there in 0.50 mole of potassium permangante, KMnO4
12. 2N2O5(s) -> 4NO2(g) + O2(g), if dewmposition(?) of 45g=35g, what is the percent yield for reaction?
13. The number of moles of hydrogen in 15.0 moles of C6H12O6?
14. What is the mass of 3.6*10^15 molecules of carbon dioxide?
15. Which one of following contains 1.5*10^24 atoms?
16. The name of the compound (NH4)2SO4?
17. 2Al + 6HCl -> 2AlCl3 + 3H2, how many grams of alumium chloride can be formed from 75g of Al with excess hydrochloric acid?
질문이 너무 많아서 죄송합니다.
염치불구하고 답변 기다리고 있겠습니다.
감사합니다