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murzikaleks [220]
3 years ago
6

Help with #3 please. I’ll mark brainly

Chemistry
2 answers:
Len [333]3 years ago
8 0
The control Group

The control group is the group of mold spores that were not exposed to ultraviolet light, left in the darkness and as such were not altered. Control groups are not altered and serve as some form of measurement of the experimental group. The experimental group is the mold spores group exposed to ultraviolet light and observed to note the difference between it and the control group
chubhunter [2.5K]3 years ago
4 0

Answer:

sa gutan ko na nga para mabrainliest na sya

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What is the term for the number of protons in the nucleus of each atom of an element? it also indicates the number of electrons
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If you were to react 4.3 miles of magnesium phosphide how many moles of potassium would you need?
bixtya [17]

Answer:

25.8

Explanation:

Let's write the reaction between magnesium-phosphide and potassium:

Mg3P2 + K = Mg + K3P

And now let's balance this equation:

Mg3P2+6K=3Mg+2K3P

We see that the ratio of magnesium-phosphide and potassium is 1:6, which means that for every mole of magnesium-phosphide there need to be 6 moles of potassium.

Since we have 4.3 moles of Mg3P2, there need to be 6 • 4.3 = 25.8 moles of potassium.

5 0
3 years ago
What is the density of a cube of water measuring 2cmX4cmX1cm, with a mass of<br> 8g?
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What happens to excess heat produced in the muscle during contraction and relaxation
Afina-wow [57]

Answer:

Calcium is then pumped back into the sarcoplasmic reticulum breaking the link between actin and myosin.

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