Which best explains how photosynthesis is helpful to humans?

Chemistry

1 answer:

marissa [1.9K]2 years ago

5 0

Answer:

It reduces the amount of harmful rays released by the sun. It increases the levels of carbon dioxide in the air.

Explanation:

<em>PWLS MARK ME BRAINLIEST*</em>

You might be interested in

What is the minimum number of kilojoules needed to change 40.0 grams of water at 100 degree celsius to steam at the same tempera

Lelechka [254]

100 kilo-joules are needed to change.<span />

7 0

3 years ago

The energy needed to create bonds between two hydrogen molecules is measured in units called __________

igomit [66]

This is called bond energy, or bond enthalpy, and is measured in units of kilojoules per mole (kJ/mol).

5 0

3 years ago

How do you do this problem?

Svetradugi [14.3K]

Answer:

Explanation:

If the temperature of the water goes up, the reaction is exothermic (heat is being given away by the equation -- more precisely the reactants of the equation). Only A and B can be true. In order for the reaction to occur, the water has to absorb the heat. It's temperature goes up. Remember that minus sign. It is almost the key fact for this question.

The question is not as hard as it looks, but that is easy for me to say.

m = 100 g

c = 4.2 J/(g * oC)

deltaT = 21 - 20 degrees = 1 degree.

Heat = 100 * 4.2 * 1

Heat = 420 J

Heat = 420 * [1 kJ/1000 J]

Heat = -0.42 kJ

8 0

3 years ago

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n

Gre4nikov [31]