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olga nikolaevna [1]
3 years ago
15

Write the chemical equation for the following reaction The elements sodium and chlorine combine to yield the compound sodium chl

oride
Chemistry
1 answer:
Shkiper50 [21]3 years ago
8 0

Answer:Na2S04 + HCl gives

NaCl + H2So4

Explanation:

Displacement reaction

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How can melting point and boiling point identify a substance
Nikolay [14]

Answer:

to determine of it is a solid liquid or gas.

Explanation:

The melting point is the temperature at which a substance converts from a solid state to a liquid state.

8 0
3 years ago
The weights of all elements are always compared to oxygen.
marishachu [46]

Answer:

The weights of all elements are always compared to the Carbon-12.

Explanation:

The weights of all elements are always compared to the Carbon-12 because the mass of carbon is 12 which is the exactly the sum of protons and neutrons.  

Oxygen was also considered the standard for some time but later this stander was rejected because in natural O¹⁷ and O¹⁸ were also present and this create the two different atomic mass tables.

AMU:

Atomic mass unit is define as the 1/12 the mass of an atom of carbon-12.

C12 has six neutron and six protons in the nucleus.

This unit is used to express the masses of atoms. We know that masses of atoms are very small and we do not have any such type of balance that can measure very small quantity. So that is way we use this scale to measure small quantity. For example, according to this scale

relative atomic mass of hydrogen is 1.008 amu

relative atomic mass of oxygen is 15.999 amu

relative atomic mass of uranium is 238.0289 amu

relative atomic mass of chlorine is 35.453 amu

7 0
3 years ago
10. In what part of the world might you find Mystery Island (note: you will be given full-credit for simply attempting this ques
OLga [1]
Well countries near the quitter of warmer than countries than the poles. So the mystery island would probably be near the equator near Florida or in Florida
4 0
3 years ago
What is the percent composition of a copper chloride compound if a 269 g sample contains 127 g of copper and 142 grams of chlori
Tems11 [23]

Answer:

Explanation:

The whole sample is 269

%copper = 127/269 * 100 = 47.2%

%chlorine = 142/269 * 100 = 52.8%

That's all you are asking. Is there more?

5 0
3 years ago
What is the charge of a chlorine ion that has<br> gained 1 electron?
nikdorinn [45]

schoOOOL SUcKS sO BADDDDDD

7 0
3 years ago
Read 2 more answers
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