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14-нұсқа

Authored by Zhamila Rysbek

Chemistry

University

14-нұсқа
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50 questions

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1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Сутекті қосылыстарының тұрақтылығы артатын қатар

SnH4, SiH4, CH4

CH4, GeH4, PbH4

PbH4, GeH4, SiH4

CH4, SnH4, PbH4

PbH4, GeH4, CH4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

B E F

А в G

В с f

C D A

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

А

В

С

Д

Е

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A E

D

F G B

A F

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A scientist conducts an experiment to determine the rate of the following reaction:

N2 (g) + O2 (g) → 2NO(g)

If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 M after 0.100 s, what is the rate of the reaction?

0.500 M/s

1.00 M/s

5.00 M/s

10.0 M/s

0.250 M/s

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Диспропорциялану реакция(лары)сы

Ca+Br2

KOH+HCl

H2O+CL2

SO2+H2S

HNO3+CaCl2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the rate of appearance of a product overtime?

It increases

It does not change

It decreases

It decreases, and then increases

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