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4 years ago

How did the scientific method change the way scientists worked beginning in

Chemistry

1 answer:

earnstyle [38]4 years ago

3 0

Answer:

A). It encouraged them to rely on observation and experimentation to support their conclusions.

Explanation:

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what is the volume of the air in a balloon that occupies 0.730 L at 28.0 c if the temperature is lowered to 0.00 C

svetoff [14.1K]

Answer:

The volume of the air is 0.662 L

Explanation:

Charles's Law is a gas law that relates the volume and temperature of a certain amount of gas at constant pressure. This law says that for a given sum of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of the movement they have. the gas molecules. This is represented by the quotient that exists between volume and temperature will always have the same value:

$\frac{V}{T}=k$

If you have a certain volume of gas V1 that is at a temperature T1 at the beginning of the experiment and several the volume of gas to a new value V2, then the temperature will change to T2, and it will be true:

$\frac{V1}{T1}=\frac{V2}{T2}$

In this case:

V1= 0.730 L
T1= 28 °C= 301 °K (0°C= 273°K)
V2= ?
T2= 0°C= 273 °K

Replacing:

$\frac{0.730 L}{301K}=\frac{V2}{273K}$

Solving:

$V2=273K*\frac{0.730L}{301K}$

V2=0.662 L

<u><em>The volume of the air is 0.662 L</em></u>

6 0

3 years ago

I WILL GIVE BRAINLIEST PLEASE HELP ME I NEED HELP!

AleksAgata [21]

I think the answer would be trenches but I’m sorry if I’m wrong

4 0

3 years ago

Identify the element oxidized, the element reduced, the oxidizing agent, and the reducing agent for the following equation

bazaltina [42]

The element that gains electrons, becomes reduced.

While the one which loses electrons, becomes oxidized.

In this equation,

CH₃OH + Cr₂O₇²⁻---- --> CH₂O + Cr³⁺.

By balancing the equation, we will get:

3CH₃OH + Cr₂O₇²⁻ + 8H⁺ --> 3CH₂O + 2Cr³⁺ + 7H₂O

Here the oxidation state of Cr changes from +6 to +3 that is it is being reduced thus serving as a oxidizing agent while other element retain their charges.

Here Cr₂O₇²⁻ is reduced while CH₃OH is oxidized.

So Cr₂O₇²⁻ serves as a oxidizing agent, while CH₃OH serves as reducing agent .

4 0

3 years ago

In which pair do both compounds exhibit predominantly ionic bonding?

klasskru [66]

Answer:

In pair NaF and H2O both compounds exibit predominantly ionic bonding.

4 0

2 years ago

In an animal, a muscle cell requires more energy than other cells. Because of this, you would

densk [106]

Cell walls
Chloroplast

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3 years ago