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sergejj [24]
3 years ago
6

Question 1

Chemistry
1 answer:
Bumek [7]3 years ago
7 0

Answer:

the average kinetic energy will double as well

Explanation:

According to the kinetic molecular theory of gases, the average kinetic energy of the particles in a substance is directly proportional to the absolute temperature of the gas (in Kelvin).

Mathematically:

KE=\frac{3}{2}kT

where

KE is the average kinetic energy of the particles in a gas

k is the Boltzmann constant

T is the absolute temperature of the gas

From the equation, we see that

KE\propto T

In this problem, the absolute temperature of the gas is doubled, so the new temperature is

T'=2T

Therefore, the new kinetic energy of the molecules will be

KE'\propto T' = 2T \propto 2KE

So, the average kinetic energy will double as well.

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How many grams of water will be produced from 50 g hydrogen reacting with 50 g oxygen?
DanielleElmas [232]

We need to first come up with a balanced equation:


4H+O_{2} → 2H_{2}O


We know that the molar ratio of hydrogen to oxygen to water now is 4:1:2.


Converting the amount of grams given to moles is as follows:


Hydrogen: \frac{1mole}{1.008g}*50g=49.6mol


Oxygen: \frac{1mole}{15.999g}*50g=3.125mol


We know now that the limiting reactant is oxygen. We can then know that the number of moles of water are produced are double the number of moles of oxygen used due to the ratio that we established at the beginning - 4:1:2.


So we now can use 6.25 moles of water as the amount produced.


Then we convert moles of water to grams:


\frac{18.015g}{1mole} *6.25mol=112.59g


Now we know that there are 112.59g of water produced when we start with 50g of hydrogen and 50g of water.

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wlad13 [49]

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Explanation:

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8 0
3 years ago
What is the SI unit used to measure weight?
stepladder [879]

Answer:

The si unit used to measure weight is kilogram /kg

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sashaice [31]
The answer is A. As the first statement is a true statement. Hope this help you
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A. Identify the structure drawn below.
nadya68 [22]

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