Računanje Flashcards

1
Q

Kaj je formula za relativno molsko maso?

A

Mr = masa 1 molekule / masa 1/12 molekule 12(zgoraj)C

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

Kaj je formula za relativno molekulsko maso?

A

Ar = masa 1 atoma / 1/12 mase 12(zgoraj)C

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

Mr(H2O)=

H=1,01, O=16

A

Mr(H2O) = 2 x Ar(H) + Ar(O) =
=2 x 1,01 + 16,00 =
= 18,02

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

Mr(CuSO4)=

Cu=63,50, S=32,1, O=16

A

Mr= Ar(Cu) + Ar(S) + Ar(O) =
=63,5 + 32,1 + 4 x 16,0 =
= 63,5 + 32,1 + 64 =
= 159,6

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

Kaj je molska masa?

A

Je masa enega mola snovi

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

Kako označimo molsko maso?

A

Z M

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

Kakšno enoto ima molska masa?

A

g/mol

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

Napiši formulo množine snovi

A
Masa   
      [g]       št.delcev
         |          |
        m        N
n = --- = ---
       M         NA
        |          |
   molska   Arogardovo št.
   masa      [6,02 x 10 na 23 /mol]
  [g/mol]
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Kaj je 1 mol Au

A

6,02 x 10 na 23 atomov Au

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

Kaj je 1 mol Fe2+

A

6,02 x 10 na 23 Fe2+

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

Kaj je 1 mol H2O

A

6,02 x 10 na 23 molekul H2O

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

Kako označimo masni delež?

A

Z W

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

Kakšno enoto ima masni delež?

A

je nima, ali ima &

/ , %

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

Kakšna je formula masnega deleža?

A

…………………….m(topljenec) m(topljenec)
W(topljenca)= —————— = ——————–
m(raztopina) m(topljenec + topilo)

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

Zračunaj masni delež:
m(cedevita)=9g
m(voda)=500g

A

…………………..9g
m(cedevita)= ——— = 0,02 x 100% = 2%
509g

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

Kako označimo množinsko koncentracijo?

A

Z c

17
Q

Kako računamo množinsko koncentracijo?

A
množina (mol)
                           n(topljenec)
c (toplejenec) = --------------------  = (mol/L)
                            V(raztopina)
                           volumen(L)
18
Q

Kako označimo masno koncentracijo?

A

Z S(prb. 8 al S)

19
Q

Kako računamo masno koncentracijo?

A
masa(g)
              m(topl.)           g
S(topl.)=-------------- = -----------
               V(topl.)           L
             volumen(L)
20
Q

Kaj je topnost?

A

je največja količina topljenca ki jo lahko raztopimo v določeni količini topila pri določeni temperaturi.

21
Q

Kako računamo topnost?

A

W x 100
topnost= —————
1-W
W-masni delež

22
Q

Kako merimo topnost?

A

g toplejnca / 100 g topila