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3 years ago

10

Write a balanced chemical equation based on the following: Solid magnesium metal reacts with chlorine gas to produce solid magne

sium chloride.

1 answer:

iragen [17]3 years ago

7 0

Answer:

Mg + Cl2 = MgCl2

I hope it helps

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1. Classify each of the following as a homogeneous or heterogeneous substance.

Olegator [25]

a. iron ore - heterogeneous substance

(it contains a mixture of iron oxides)

b. quartz - homogeneous substance

(it is the crystalline silicon dioxide SiO₂, which is a very pure form of SiO₂)

c. granite - heterogeneous substance

(it as mixture of different oxides, mainly aluminium and silicon oxides)

d. energy drink - heterogeneous substance

(a mixture of water, sugar, carbon dioxide and different substances that may boost concentration, like caffeine)

e. oil-and-vinegar salad dressing - heterogeneous substance

(this salad dressing of oil and vinegar is composed of unsaturated triglycerides, acetic acid and water)

f. salt - homogeneous substance

(sodium chloride NaCl)

g. rainwater - homogeneous substance

(assuming the the atmosphere is clean, it is just pure water H₂O)

h. nitrogen - homogeneous substance

(it is the main component of air and it is a diatomic molecule N₂)

7 0

3 years ago

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1.42 mol sample of neon gas at a temperature of 13.0 °C is found to occupy a volume of 25.5 liters. The pressure of this gas sam

Dima020 [189]

Answer: 996 mmHg

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

According to the ideal gas equation:

$PV=nRT$

P = Pressure of the gas = ?

V= Volume of the gas = 25.5 L

T= Temperature of the gas = 13°C = (273+13) K = 286K

R= Gas constant = 0.0821 atmL/K mol

n= moles of gas= 1.42

$P=\frac{nRT}{V}=\frac{1.42\times 0.0821\times 286}{25.5}=1.31atm=996mmHg$ (760mmHg=1atm)

Thus pressure of this gas sample is 996 mm Hg.

3 0

3 years ago

Describe how urine is removed from the blood and then eliminated from the body

Vlad [161]

Passes through the kidneys and the good stuff is kept, and the other stuff is passed through leading to the bladder. The once the bladder is full enough to send the message to the brain, urine (waste) is eliminated from the body.

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3 years ago

What is a potential benefit of fuel cell cars?

77julia77 [94]

Answer:

no recharging necessary

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3 years ago

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Why does the lack of snow in the mountains make drought cycles worse

expeople1 [14]

Answer:

lack of snow in the mountains makes drought cycles worse because mountains are a natural part of the water cycle.

Explanation:

Mountains play a critical part In the water cycle by capturing moisture in the air and it precipitates as snow and when it does this the snow will melt in the warmer seasons and flow down stream then following the rest of the water cycle if we didn't have this then the streams would run less and it would greatly disrupt the water cycle.

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3 years ago