Recapitulare masa molară Flashcards

1
Q

Mg + H2SO4 = ?

A

MgSO4 + H2 (se degajă)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cum se notează masa molară?

A

M.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cum se notează masa atomică?

A

A.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A(H) = ?

A

1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A(O) = ?

A

16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A(N) = ?

A

14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A(Mg) = ?

A

24

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A(S) = ?

A

32

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Calculează M(H2O).

A

M(H2O) = 2A(H) + A(O) = … = 18.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Calculează M(H2SO4).

A

M(H2SO4) = 2A(H) + A(S) + 4A(O) = … = 98

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Calculează M(Ca(OH)2).

A

M(Ca(OH)2) = A(Ca) + 2A(O) + 2A(H) = … = 74

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cum se notează gruparea fosfat?

A

PO4.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Fosfat de calciu

A

Ca3(PO4)2.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Ce valență are gruparea fosfat (PO4)?

A

III.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Cum se notează numărul de moli?

A

niu = nr de moli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Cum se notează masa molară?

A

μ (miu).

17
Q

N(A) = numărul lui Avogrado = ?

A

6.022 * 10^23 molecule

18
Q

Cu cât este egal numărul de moli (niu)?

A

niu = m(g) / μ = N(molecule) / N(A)

19
Q

Cât cântărește un mol din orice substanță?

A

Cât masa molară a substanței și conține N(A) de molecule.

20
Q

NH3

A

Amoniac

21
Q

Amoniac

A

NH3