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3 years ago

Can photosynthesis occur in the dark if plants are warm?

2 answers:

6 0

No. Photosynthesis happens when there is sunlight. That is how plants make their food. No sunlight, no photosynthesis. If the plant has been taken away from a sunny spot and put in the dark while still warm, it's possible a small amount of photosynthesis could happen.

Anna [14]3 years ago

4 0

No there has to be light

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What parts of a divers body are most affected by pressure changes?

Yanka [14]

I would say the head and heart because if you swim deep in the ocean you will feel pressure in your heart and head because the muscles in your body are closing in on them

hope i helped

5 0

3 years ago

How do catalysts increase the rate of a chemical reaction?

bogdanovich [222]

A, They Lower The Activation Energy.

7 0

3 years ago

Read 2 more answers

Which of the following is an SI base unit for measuring length?

Nikolay [14]

An SI base unit for measuring length would be meters.

5 0

3 years ago

Schach [20]

Answer:

2.74 M

Explanation:

Given data:

Mass of sodium chloride = 80.0 g

Volume of water = 500.0 mL

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Now we will convert the mL into L.

500.0 mL× 1 L /1000 mL = 0.5 L

In next step we will calculate the number of moles of sodium chloride.

Number of moles = mass/molar mass

Number of moles = 80.0 g/ 58.4 g/mol

Number of moles = 1.37 mol

Molarity:

M = 1.37 mol/ 0.5 L

M = 2.74 M

8 0

3 years ago

A 3.82 g piece of limestone contains 2.62 g of CaCO3

Kobotan [32]

Considering the definition of percentage by mass, the mass percentage of CaCO₃ is 68.59%.

<h3>What is mass percentage</h3>

The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.

In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:

$mass percentage=\frac{mass of solute}{mass of solution}x100$