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user100 [1]
2 years ago
9

Zinc + Hydrogen Chloride What is proof of a chemical reaction?

Chemistry
2 answers:
maria [59]2 years ago
7 0

Answer:

zncl2. . . . . . . . . . . . . . . .

alexira [117]2 years ago
5 0

Answer:

produces bubbles and hydrogen gas

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match these items. three-dimensional bonding, hardest natural substance, used as lubricant, nonconductor, weak planar bonds, car
DENIUS [597]

Answer:

1. three-dimensional bonding

Diamond

2. Hardest natural substance

diamond

3. Used as lubricant

Graphite

4. nonconductor

Diamond

5. Weak, planar bonds

Graphite

6.Carbon black or soot

Amorphous

Explanation;

sorry im late, hopefully this can help somebody :)

4 0
2 years ago
20) If a single gram of sugar contains 4 Calories of energy, what is the Calorie content from a serving of cereal that
Zanzabum
Answer:
36.8
Explanation:
Because 9.2 x 4 = 36.8
8 0
2 years ago
Which statement describes a digital signal used to store information
Sladkaya [172]

Answer:

it is 1,4

Explanation:

Just took the test hope you get it right. c:

8 0
2 years ago
Read 2 more answers
How many valence electrons are in beryllium?
stellarik [79]
There are 2 valence electrons
7 0
3 years ago
5. Uranium has three common isotopes. If the abundance of 2U which has an atomic mass of 233.878 amu is 0.01%, the
Temka [501]

Uranium has three common isotopes. The average atomic mass of uranium is 23.7 u/atom.

<h3>What are isotopes?</h3>

Isotopes are similar elements that have a different number of protons.

Uranium has three isotopes

The abundance of 2U has an atomic mass of 233.878 is 0.01%

The abundance of U has a mass of 234.892 amu is 0.71%

The **U has an atomic mass of 237.911 amu is 99.28%

Let's assume we have 10 000 atoms of Uranium

Mass of the 0.01 atoms = 0.01 x 233.878 = 2.33878

Mass of the 0.71 atoms =  0.71 x 234.892 = 166.773

Mass of the 99.28 atoms = 99.28 x 237.911 = 23,619.80

2.33878 + 166.773 + 23,619.80 = 23,788.8

23,788.8 / 1000 = 23.7 u/atom

Thus, the average atomic mass of uranium is 23.7 u/atom.

To learn more about average atomic mass, refer to the link:

brainly.com/question/12971445

#SPJ1

4 0
1 year ago
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