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Hoochie [10]
3 years ago
5

Can you guys help me.

Chemistry
1 answer:
Alisiya [41]3 years ago
5 0
<span>1. Formula 2. Reactants 3. Atoms & molecules 4. Destroyed or created 5. Balanced 6. Mass number 7. 2Al(s) + 3CuCl2(aq) = 2AlCl3(aq) + 3Cu(s)</span>
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Brass alloy is best described as _______.
Vladimir79 [104]

Answer:

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Explanation:

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4 years ago
What is the boiling point of water when the atmospheric pressure exerted on the water is 81 kPa ?
stellarik [79]

Answer: The boiling point of water at 81 kPa will be 298.17 K.

Explanation:

The boiling point of water is 373 K at atmospheric pressure. So, to calculate the boiling point at 81 kPa, we use the law given by Gay-Lussac.

Gay-Lussac Law states that pressure is directly proportional to the temperature when volume and moles remain constant.

Mathematically,

\frac{P_1}{T_1}=\frac{P_2}{T_2

where,

P_1\text{ and }T_1 = Initial pressure and temperature

P_2\text{ and }T_2 = Final pressure and temperature

We are given:

P_1=1atm=101.325kPa\\T_1=373K\\P_2=81kPa\\T_2=?K

Putting values in above equation, we get:

\frac{101.325kPa}{373K}=\frac{81kPa}{T_2}\\\\T_2=298.17K

Hence, the boiling point of water at 81 kPa will be 298.17 K.

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3 years ago
If the total mass of the products in a reaction is 90 grams what was the total mass of the reactants
blsea [12.9K]
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How many total electrons are shared between two nitrogen atoms when they bond to form a diatomic nitrogen molecule?
GuDViN [60]

Explanation:

Diatomic Nitrogen molecule means the two atoms of nitrogen N_{2}.

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4 years ago
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