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химия

Authored by Баян Ирсаева

Chemistry

9th - 12th Grade

химия
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6 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Коволенттік полюссіз байланыс

HCL

I2

Al

H2O

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Media Image

The most abundant element in the earth's crust?

Hydrogen

Oxygen

Ozone

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The sixth group of cations includes

Al3+ Cr3+ Zn2+ As(III) As(V)

Cu2+ Hg2+ Co2+

To+ NH 4+ Na+

Fe2+ Fe3+ Mn2+ Bi3+ Mg2+

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The ionic strength of a 0.1 M sodium chloride solution:

0.01 M

0.1 M

0.001 M

0.0001 M

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At pH =8.0, the concentration of hydroxide ions is equal:

10-6 M

10-1 M

10-5 M

10-7 M

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Алюминий 2713Al атомдарын ά – бөлшектерімен атқылағанда атом массасы 30 болатын кремний изотопы және тағы бір элемент түзіледі. Бұл элемент

1/1 H

4/2 He

7/3 Li

9/4 Be

11/5 B

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