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SVETLANKA909090 [29]
3 years ago
10

Match the substance with its chemical formula.

Chemistry
2 answers:
ch4aika [34]3 years ago
4 0
H 3 0 + is hydronium ion. OH- is hydroxide ion. H+ is hydrogen ion
Darina [25.2K]3 years ago
4 0
H30-hydronium ions H+-hydrogen ions OH- —hydroxide ions
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If 1.20 moles of an ideal gas occupy a volume of 18.2 l at a pressure of 1.80 atm, what is the temperature of the gas, in degree
scoundrel [369]

We can calculate for temperature by assuming the equation for ideal gas law:

P V = n R T

Where,

P = pressure = 1.80 atm

V = volume = 18.2 L

n = number of moles = 1.20 moles

R = gas constant = 0.08205746 L atm / mol K

Substituting to the given equation:

T = P V / n R

T = (1.8 atm * 18.2 L) / (1.2 moles * 0.08205746 L atm / mol K)

T = 332.70 K

We can convert K unit to ˚C unit by subtracting 273.15 to Kelvin, therefore

T = 59.55 ˚<span>C</span>

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3 years ago
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Verizon [17]
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5 0
2 years ago
Examine the statement.
vlada-n [284]

Answer:disagree. Temperature increases, water expands.

Explanation:

5 0
3 years ago
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Hypothesis: How will molecular size affect the rate of evaporation and how will this correlate
Simora [160]

A molecular size affects the rate of evaporation when the larger the intermolecular forces in a compound, the slower the evaporation rate and this correlates with temperature change.

Molecular size seems to have an effect on evaporation rates in that the larger a molecule gets or grows from a base chemical formula, its evaporation rate will get slower.

<h3>What is the molecular size?</h3>

This is a measure of the area a molecule occupies in three-dimensional space as this relates to the physical size of an individual molecule.

Hence, we can see that a molecular size affects the rate of evaporation the larger the forces, the lower the rate.

Read more about<em> molecular size</em> here:

brainly.com/question/16616599

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5 0
2 years ago
What is an indicator that a chemical change has occurred?
Aleks04 [339]

Answer:

That something has changed chemically

Explanation:

Uh...Google it

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3 years ago
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