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DochEvi [55]
3 years ago
11

Who thought everything was made from fire,earth,air and water

Chemistry
1 answer:
Soloha48 [4]3 years ago
4 0

Answer: Aristotles

Explanation:

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When a basketball is left outside in the cold it goes flat because the volume of air inside the
fiasKO [112]

Answer:

Charle's Law

Explanation:

<em>...cold it goes flat because the volume of air inside the  ball has been reduced. </em>

<em />

In this scenario, the lower the temperature  the lower the volume. This means that there's a direct proportional relationship between the volume and temperature.

This relationship is presented by Charles law. Charles law states that the volume occupied by a fixed mass of gas is directly proportional to its absolute temperature.

4 0
3 years ago
12.1 g CoCl3 calculate the amount, in moles
elena-s [515]

Answer:

Number of moles of CoCl3 =  0.09 moles

Explanation:

Given data:

Mass of CoCl₃ = 12.1 g

Number of moles = ?

Solution:

First of all we will calculate the molar mass.

Molar mass of CoCl3 = 28.01 + (35.5×3)

Molar mass of CoCl3 = 28.01 + 106.5

Molar mass of CoCl3 = 134.51 g/mol

Number of moles of CoCl3 = mass / molar mass

Number of moles of CoCl3 = 12.1 g/134.51 g/mol

Number of moles of CoCl3 =  0.09 moles

4 0
4 years ago
An atom has 9 electrons and 9 protons at the start. If it loses 2 electrons, the net charge on the atom will be . If the atom in
lara31 [8.8K]
Loses two = +2
gains 4 = -4
8 0
3 years ago
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Use the naming conventions to complete the following formula-name pairs of binary acids. Match the acid names and chemical formu
ohaa [14]

Answer:

This looks like a hard question for me is this biology

Explanation:

6 0
3 years ago
Hydrogen has 2 naturally occurring isotopes hydrogen -1 and hydrogen-2. what is the symbol for each of these isotopes?
9966 [12]

Answer:

Their nuclear symbols are therefore 1H, 2H, and 3H.

Explanation:

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