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3 years ago

Who good at this n kno the answer hmu

Chemistry

2 answers:

stiv31 [10]3 years ago

7 0

A 19 bossssssssssssssssssss

lys-0071 [83]3 years ago

4 0

Answer:

c.22

Explanation:

41-19=22

I hope this helps

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A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 10

masya89 [10]

Answer: The molar mass of unknown gas is 367.12 g/mol

Explanation:

Rate of a gas is defined as the amount of gas displaced in a given amount of time.

$\text{Rate}=\frac{V}{t}$

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

$\text{Rate of effusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}$

So,

$\left(\frac{\frac{V_{X}}{t_{X}}}{\frac{V_{O_2}}{t_{O_2}}}\right)=\sqrt{\frac{M_{O_2}}{M_{X}}}$

We are given:

Volume of unknown gas (X) = 1.0 L

Volume of oxygen gas = 1.0 L

Time taken by unknown gas (X) = 105 seconds

Time taken by oxygen gas = 31 seconds

Molar mass of oxygen gas = 32 g/mol

Molar mass of unknown gas (X) = ? g/mol

Putting values in above equation, we get:

$\left(\frac{\frac{1.0}{105}}{\frac{1.0}{31}}\right)=\sqrt{\frac{32}{M_X}}\\\\M_X=367.12g/mol$

Hence, the molar mass of unknown gas is 367.12 g/mol

3 0

4 years ago

Chemistry of Volcanic Gases: Balance the following reactions that occur among volcanic gases. Place coefficients directly in fro

Firdavs [7]

In balancing reactions, it is important to remember that each of the side in the reaction should have the same number of elements. We do as follows:

2SO2(g) + O2(g) -> 2SO3(g)

H2S(g) + 3/2O2(g) -> SO2(g) + H2O(g)

Hope this answers the question. Have a nice day.

6 0

4 years ago

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When magnesium carbonate, MgCO2, reacts with nitric acid, HNO3, it forms magnesium nitrate, Mg(NO3)2, and carbonic acid, H2CO3.

schepotkina [342]

I think the correct answer among the choices listed above is option C. The two type of reaction taking place in the process are double-replacement reaction and decomposition reaction. The double-replacement reaction is the reaction between magnesium carbonate and nitric acid while the decomposition is the breaking down of the carbonic acid into water and CO2.

5 0

3 years ago

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What happens to the area of the world off the coast of Peru

joja [24]

Answer:The Peruvian west coast bordering the Pacific Ocean is a long desert strip that stretches from the departments of Tumbes in the north bordering Ecuador, to Tacna in the south bordering Chile for a total length of 1,555 miles or 2,500 km. The average temperature from December to April is 25 to 28C or 53 to 59F and the average temperature from May to November is 12 to 15C or 53 to 59F.

The coast covers about 10% of the territory but is home to more than 50% of the population. Large cities such as Lima, the capital, Trujillo, Chiclayo and Tacna are located in the coast. Cities along the coast are the center of economic activity attracting people from the interior of the country looking for economic prosperity.

idk hope this helps !!!!

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4 years ago

The equation below represents chemical reaction that occurs in living cells. C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy How many atoms

KengaRu [80]

Answer:

Explanation:

There are 6 Carbon atoms, 12 Hydrogen atoms, and 18 Oxygen atoms.

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3 years ago