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3 years ago

8

Which substance can not be decomposed by ordinary chemical means?

2 answers:

Yuki888 [10]3 years ago

7 0

Elements can't be decomposed while compounds can be decomposed.

The answer would be (2) mercury because since mercury is an element, it cannot be broken down chemically.

oksian1 [2.3K]3 years ago

4 0

(2) mercury cannot be decomposed by ordinary methods because it is an element, to "decompose" these you need an accelerated atom smasher to separate these into protons, neutrons, electrons, etc.

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vitfil [10]

Answer:

with what may I ask?

Explanation:

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7 0

3 years ago

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600. ml of a gas at 50.0 kPa is compressed, at constant temperature, until its volume becomes 200. ml. What is the new pressure

Flura [38]

Answer:

<h3>The answer is 150 kPa</h3>

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new pressure

$P_2 = \frac{P_1V_1}{V_2} \\$

From the question we have

$P_2 = \frac{600 \times 50000}{200} = \frac{30000000}{200} \\ = 150000$

We have the final answer as

<h3>150 kPa</h3>

Hope this helps you

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3 years ago

How many molecules of glucose (C6H12O6) are present in 23.3 g of the substance?

abruzzese [7]

Answer:

11

Explanation:

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4 years ago

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Turn the word equation into a chemical balanced equation.

yan [13]

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7 0

3 years ago

7. A gas has a volume of 300 mL at 300 mm Hg. What will its volume be if the pressure is changed to 500 mm Hg?

USPshnik [31]

Answer:

The volume is

<h2>180 mL</h2>

Explanation:

In order to solve for the volume we use the formula for Boyle's law which is

<h3> $P _{1} V _{1} = P _{2}V _{2}$ </h3>

where

P1 is the initial pressure

V1 is the initial volume

P2 is the final pressure

V2 is the final volume

Since we are finding the final volume we are finding V2

Making V2 the subject we have

<h3> $V _{2} = \frac{P _{1} V _{1}}{P _{2} }$ </h3>

From the question

P1 = 300 mmHg

V1 = 300 mL

P2 = 500 mmHg

Substitute the values into the above formula and solve for the final volume obtained

That's

<h3> $V _{2} = \frac{300 \times 300}{500} \\ = \frac{90000}{500} \\ = \frac{900}{5}$ </h3>

We have the final answer as

<h3>180 mL</h3>

Hope this helps you

7 0

4 years ago