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2 years ago

HNO3(aq)+H2S(s)> Ss)+ NO(g)+H2O(l)

Chemistry

1 answer:

sveta [45]2 years ago

4 0

Answer: Nitric acid + Hydrogen disulfide

Explanation: To balance HNO3 + H2S = NO + S + H2O you'll need to be sure to count all of atoms on each side of the chemical equation.

Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Nitric acid + Hydrogen disulfide .

Important tips for balancing chemical equations:

Only change the numbers in front of compounds (the coefficients).

Never change the numbers after atoms (the subscripts).

The number of each atom on both sides of the equation must be the same for the equation to be balanced.

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anyanavicka [17]

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3 years ago

Of the following gases which will have the lowest rate of effusion at a given temperature?A. SO3B. CH4C. NH3D. HBr E. HCl

egoroff_w [7]

Answer: HBr has the lowest rate of effusion at a given temperature.

Explanation: The effusion rate usually increases with increase in temperature because the kinetic energy of the gaseous molecules increases. But it was not true for gases having heavier mass. This was explained by Graham's Law.

Graham's Law states that the rate of effusion of a gas is inversely proportional to the square root of its molecular weight.

$(\text{Rate of effusion})_A\propto \frac{1}{\sqrt{\text{Mol. mass}_A}}$

We are given different gases with different Molecular masses. The gas having larger Molecular mass will have the lowest rate of effusion.

Mol. Mass of $SO_3$ = 80 g/mol

Mol. Mass of $CH_4$ = 16 g/mol

Mol. Mass of $NH_3$ = 17 g/mol

Mol. Mass of HBr = 81 g/mol

Mol. Mass of HCl = 36 g/mol

As, Mol. mass of HBr is the highest, so its rate of effusion will be the lowest.

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4 years ago

The rate of evaporation is affected by all of the following except

lidiya [134]

Hello there.

<span>The rate of evaporation is affected by all of the following except

Answer: </span><span>B. the humidity.
</span>

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What is the kinetic energy of a 100-kg object that is moving with a speed of 12.5 m/s?

miss Akunina [59]

Becasue KE= 1/2 mv squared

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kakasveta [241]

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3 years ago

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