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3 years ago

Which element is likely to be the best conductor of electricity?

Chemistry

1 answer:

Eddi Din [679]3 years ago

4 0

Answer:

copper

Explanation:

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the amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. what is the

natulia [17]

Independent: Gasoline with different amounts of lead
Dependent: Amount of pollution produced

4 0

3 years ago

Based on your observations from the glowing splint test with oxygen gas, briefly explain why liquid oxygen is a very hazardous s

Cerrena [4.2K]

Answer:

liquid oxygen is highly flammable

Explanation:

near any source of heat. liquid oxygen can explode to flames thus being hazardous

3 0

3 years ago

at atmoshperic pressure, a balloon contains 2.00L of nitrogen of gas. How would the volume change if the Kelvin temperature were

Nataly [62]

<u>Answer:</u> The percent change in volume will be 25 %

<u>Explanation:</u>

To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

We are given:

$V_1=2L\\T_1=T_1\\V_2=?\\T_2=75\% \text{ of }T_1=0.75\times T_1$

Putting values in above equation, we get:

$\frac{2L}{T_1}=\frac{V_2}{0.75\times T_1}\\\\V_2=\frac{2\times 0.75\times T_1}{T_1}=1.5L$

Percent change of volume = $\frac{\text{Change in volume}}{\text{Initial volume}}\times 100$

Percent change of volume = $\frac{(2-1.5)}{2}\times 100=25\%$

Hence, the percent change in volume will be 25 %

5 0

3 years ago

Helium and nickel are examples of ________. These

emmasim [6.3K]

Answer:

Elements, in turn, are pure substances—such as nickel, hydrogen, and helium—that make up all kinds of matter.

Hope This Helps! Have A Nice Day!!

3 0

3 years ago

What are two examples of a soulution?

Anni [7]

Which type of solution are you talking about?

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3 years ago