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Andre45 [30]
3 years ago
9

7) How many total atoms are there in 2.21 moles of magnesium bromide?

Chemistry
1 answer:
EleoNora [17]3 years ago
3 0

Answer:0.0054314469917931 mole using the molecular weight calculator and the molar mass of MgBr2.

Explanation:

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Which metal absorbs the greatest amount of heat energy
Fed [463]

Answer:

This question is incomplete but the completed question is in the attachment below. And the correct is b

Explanation:

Specific heat capacity can be defined as the amount of heat required to raise to raise 1 kg of a substance by 1 kelvin. Thus, this means that when the specific heat capacity of a substance is high, it takes more energy to increase the temperature of that substance. This also means that when different substances are subjected to the same amount of heat, the substance with the higher specific heat capacity will absorb less heat; for example at a beach, water has a very high specific heat capacity, thus when the sand in the beach is hot, the beach water is still relatively cold.

From the description above, <u>it can be seen that the metal with the least specific capacity will absorb the greatest amount of heat, thus the metal is lead</u> with the specific heat capacity of 0.129 J/(g. °C).

4 0
3 years ago
Write the formulas for the following ionic compounds.
valentinak56 [21]

Answer:

1) KI

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3 years ago
Question 10 (1 point)
Vinil7 [7]

Answer:

A,C,D,B

Explanation:

1killometer=1000m

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3 years ago
Tetrachloromethane, CCl4, is classified as a
Soloha48 [4]
Correct Answer: <span>compound because the atoms of the elements are combined in a fixed proportion.

Reason:
A </span><span> chemical </span>compound is a chemical substance composed of element (of same or different type) that are bonded in a fixed proportion. Depending upon the type of element, bond can be ionic or covalent. In present case, <span>tetrachloromethane i.e. CCl4 has one 'C' atom that is covalently bonded to four 'Cl' atoms. </span>
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