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Marta_Voda [28]
3 years ago
8

A plant uses energy from the sun to make food what kind of energy transformation is this

Chemistry
1 answer:
IRISSAK [1]3 years ago
5 0

Answer:

photosynthesis

Explanation:

bsbsbsns

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A satellite can move around Earth in a circular orbit at constant height because
dybincka [34]
I believe it’s answer B because even in space gravity plays roles.
4 0
3 years ago
What has to happen to a substance in order for you to observe it’s chemical properties
nydimaria [60]
U must burn it
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5 0
3 years ago
A tank at is filled with of sulfur tetrafluoride gas and of sulfur hexafluoride gas. You can assume both gases behave as ideal g
dangina [55]

The question is incomplete, the complete question is:

A 7.00 L tank at 21.4^oC is filled with 5.43 g of sulfur hexafluoride gas and 14.2 g of sulfur tetrafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas. Round each of your answers to significant digits.

<u>Answer:</u> The mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.  The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

  • <u>For sulfur hexafluoride:</u>

Given mass of sulfur hexafluoride = 5.43 g

Molar mass of sulfur hexafluoride = 146.06 g/mol

Putting values in equation 1, we get:

\text{Moles of sulfur hexafluoride}=\frac{5.43g}{146.06g/mol}=0.0372mol

  • <u>For sulfur tetrafluoride:</u>

Given mass of sulfur tetrafluoride = 14.2 g

Molar mass of sulfur tetrafluoride = 108.07 g/mol

Putting values in equation 1, we get:

\text{Moles of sulfur tetrafluoride }=\frac{14.2g}{108.07g/mol}=0.1314mol

Total moles of gas in the tank = [0.0372+ 0.1314] mol = 0.1686 mol

Mole fraction is defined as the moles of a component present in the total moles of a solution. It is given by the equation:

\chi_A=\frac{n_A}{n_A+n_B} .....(2)

where n is the number of moles

Putting values in equation 2, we get:

\chi_{SF_6}=\frac{0.0372}{0.1686}=0.221

\chi_{SF_4}=\frac{0.1314}{0.1686}=0.779

Hence, the mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

7 0
3 years ago
When shopping for major appliances, people should look for high energy-rating numbers because those items _____.
madam [21]
The answer would be :Use less energy
6 0
3 years ago
Read 2 more answers
PLEASE HELP!!! ON A TIMER, WILL MARK BRAINLIEST
Nadusha1986 [10]

Answer:

<em>Well, Your best answer will be is  2H+ + 2OH-  ->  2H2O but you have to reduce it to H+ + OH-  ->  H2O. </em><em>Good Luck!</em>

8 0
3 years ago
Read 2 more answers
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