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Anika [276]
3 years ago
8

Most of earths carbon is in the atmosphere in the form of ___

Chemistry
1 answer:
ANEK [815]3 years ago
4 0
<span>Most of earths carbon is in the atmosphere in the form of  a gas?</span>
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A man weighing 75 kg takes 5 minutes to reach a height of 5 m when he climbs a staircase. What is his power?
Naddika [18.5K]

Answer: B. 12.25 W

please give brainliest!

Explanation:

1) Force = Weight = 75 x 9.8 = 735 N

2.)Work = Force x Height = 735 x 5 = 3675 J

3.)Power = Work / Time = 3675 / (5 x 60) = 12.25 W

4 0
3 years ago
What is the hardest mineral? <br> A. Feldspar <br> B. Fluorite<br> C. Galena<br> D. Quarts
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D it’s quartz on the Mohs scale thing it’s ranked 7
3 0
3 years ago
Explain how scientist learned about the magnetic poles of the Earth.
MatroZZZ [7]

Answer:

They learned because they keeped studying they would never give up and if they found something new or interesting they may have just studied it more.

Explanation:

3 0
2 years ago
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Why are alkalis sometimes<br> described as the opposite of<br> acids?
zlopas [31]

Answer: Because Alkalis are bases that can dissolve in water, which can also neutralize acid.

7 0
3 years ago
Given the data you collected for the volume of water displaced by 25.000 g of aluminum, what is the density of aluminum?
vovikov84 [41]

Answer:

C. 2.70 g/mL

Explanation:

Density is the ratio between the mass of a substance and the volume it occupies. Based on Archimedes' volume, the displaced volume of the aluminium is the volume it occupies. To solve this question we must find the difference in volume between initial volume of water = 30mL and final volume of water + aluminium = 39.26mL. This difference is the volume of the aluminium. With its mass we can find density:

39.26mL - 30mL = 9.26mL

Density = 25.00g / 9.26mL =

2.70g/mL

Right answer is:

<h3>C. 2.70 g/mL </h3>

6 0
2 years ago
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