Question

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gr b
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prosze POMOCYYYYYYYYY

Answer 1

1. C

2. B

3. A

4. D



6. C

7. B

8. A

9. A

10. D

11.



d-2

b-3

c-4

a-5



12.

a) P

b) F

c) F

d) P



13. KOH



K - O - H



14.



Ca + 2H20 ---> Ca(OH)2 + H2^

CaO + H20 ---> Ca(OH)2



15.



Ba(OH)2 ---H2O---> Ba[2+] + 2OH[-]



KOH ---H2O---> K[+] + OH[-]



16.



mw = 147g



Ca + 2H20 ---> Ca(OH)2 + H2^



[M]Ca = 40g/mol

[M]H2O = 18 g/mol

[M]Ca(OH)2 = 74 g/mol



Z 40g wapnia przereaguje 2 * 18 = 36 g wody.



147 - 36 = 111g



Z 40g wapnia powstanie 74g wodorotlenku wapnia.



ms = 74g

mw = 111g

mr = ms + mw

mr = 111 + 74

mr = 185[g]



Cp = ms * 100 / me

Cp = 74 * 100 / 185

Cp = 40%