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Rina8888 [55]
3 years ago
13

Energy is defined as...

Chemistry
1 answer:
Nana76 [90]3 years ago
3 0

Answer:

A

Explanation:

the ability to dissolve in water

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A decentralized system of crime laboratories currently exists in the United States under the auspices of various governmental ag
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Answer:

Federal, State, Municipal and County

Explanation:

A decentralized system of crime laboratories currently exists in the United States under the auspices of various governmental agencies at the federal, state, municipal and county levels of government.

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Given an unknown mixture consisting of two substances, explain how a scientist could use lab techniques to determine whether the
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Help? for me? yes? please?
Sladkaya [172]

Answer:

2 Mg + O2 -> 2 MgO

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3 years ago
calcium has atomic number of 20 how many electrons of a calcium atom are involved in chemical bonding
Lelu [443]

The answer is 2 electrons.


The electron configuration of calcium is 2:8:8:2

Calcium has two electrons in its outermost shell. These are its valence electrons and are the ones used in bonding with other elements.  Valence electrons of an atom are those electrons that are in its outer energy shell or that are available for bonding.

Calcium is a metal. When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms forming ions. The resulting compound is known  as an ionic compound.

For example, when calcium metal reacts with chlorine gas,   calcium gives up its two valence electrons and Chlorine accepts them resulting in a new substance called calcium chloride in which the two elements have ended up forming ionic bonds.

 


7 0
4 years ago
Read 2 more answers
BRAINLIESTTT ASAP!! PLEASE HELP ME :)
laiz [17]

Add a coefficient 2 before H2O and a 2 before SO2.

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3 years ago
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