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dimulka [17.4K]

3 years ago

8

What is the role of carbon dioxide in photosynthesis

1 answer:

Vilka [71]3 years ago

8 0

Answer:

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. Then, via respiration processes, cells use oxygen and glucose to synthesize energy-rich carrier molecules, such as ATP, and carbon dioxide is produced as a waste product

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Which piece of evidence did Alfred Wegener's original theory of continental drift have access to?

alukav5142 [94]

Answer:

the fossil clues and rock clues and the coastlines

Explanation:

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3 years ago

A reaction occurs when a solid X is placed into a solution Y as a result the temp of the new solution increases by 3.C the temp

saw5 [17]

Answer:

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4 years ago

What is electrical conductivity? Make it simple

Alenkasestr [34]

Answer: Explanation:

Conductivity of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is Siemens per meter.

3 0

4 years ago

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Two liquids are poured into a beaker. After a few seconds, the beaker becomes warm.

maxonik [38]

Answer:

A. an exothermic reaction

Explanation:

an exothermic reaction releases energy in the form of heat, therefore making the beaker warm.

6 0

3 years ago

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It takes 38.6 kJ of energy to vaporize 1.00 mol of ethanol (MW: 46.07 g/mol). What will be ΔSsys for the vaporization of 8.00 g

KIM [24]

Answer:

$\Delta S_{sys}=0.020kJ=20J$

Explanation:

Hello!

In this case, given the required energy to vaporize 1.00 mol of ethanol as the enthalpy of vaporization:

$\Delta H_{vap}=\frac{38.6kJ}{1.00mol}=38.6kJ/mol$

We can compute the entropy of the system for the vaporization of 8.00 g of ethanol, by first computing the moles:

$n_{et}=8.00g*\frac{1mol}{46.07g} =0.174mol$

And then setting up the following expression:

$\Delta S_{sys}=\frac{n_{et}*\Delta H_{vap}}{T}$

Whereas the temperature is in kelvins; thus, we obtain:

$\Delta S_{sys}=\frac{0.174mol*38.6\frac{kJ}{mol} }{79.6+273.15K}\\\\\Delta S_{sys}=0.020kJ=20J$

Best regards!

5 0

3 years ago