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3 years ago

_______ is a substance that speeds up the rate of a chemical reaction

Chemistry

1 answer:

alexandr1967 [171]3 years ago

7 0

Answer:

catalyst

Explanation:

Catalyst -

It is the substance that may be added to a chemical reaction , which increases the rate of the reaction , without undergoing on its chemical structure , is referred to as a catalyst.

The catalyst does not participate in the reaction, it only plays it role regarding the rate of the reaction.

Hence , the correct term for the given statement of the question is catalyst.

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1. The solubility of AgNO3 at 20°C is 222.0g AgNO3/100g H2O. What mass of AgNO3 can be dissolved in 250 g of water at 20°C? Reca

neonofarm [45]

Answer :

(1) The mass of silver nitrate is, 555 g

(2) The solubility of the gas will be, 0.433 g/L

<u>Solution for Part 1 :</u>

From the given data we conclude that

In 100 gram of water, the amount of silver nitrate = 222 g

In 250 gram of water, the amount of silver nitrate = $\frac{222}{100}\times 250=555g$

Therefore, the mass of silver nitrate is, 555 g

<u>Solution for Part 2 :</u>

Formula used : $S_1P_1=S_2P_2$ (at constant temperature)

where,

$S_1$ = initial solubility of methane gas = 0.026 g/L

$S_2$ = final solubility of methane gas

$P_1$ = initial pressure of methane gas = 1 atm

$P_2$ = final pressure of methane gas = 0.06 atm

Now put all the given values in the above formula, we get the solubility of methane gas.

$(0.026g/L)\times (1atm)=S_2\times (0.06atm)$

$S_2=0.433g/L$

Therefore, the solubility of the gas will be, 0.433 g/L

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3 years ago

How many valence electrons are in atom of sulfur?

Nookie1986 [14]

The answer is six because it is in group six A on the periodic table.

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Global warming____.

Karolina [17]

Will cause sea levels to fall

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Read 2 more answers

Low frequency waves have longer wavelength true or false

kap26 [50]

Answer:

True

Explanation:

Since the waves have low frequency that means the wavelength is going to be longer. Hope this helps

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2 years ago

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Hope this helps! Please correct me if I'm wrong :)

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3 years ago