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eduard
3 years ago
11

Which elements make up a water molecule?

Chemistry
2 answers:
Ludmilka [50]3 years ago
8 0

Answer:

Oxygen and Nitrogen

Explanation:

because these two elements react very strongly

natka813 [3]3 years ago
7 0

Answer:

hydrogen and oxygen make up water molecules

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What coefficient would the O 2 have after balancing C 4 H 10 +O 2 CO 2 +H 2 O ?
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Answer:6.5

Explanation:

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**MEDAL AND FAN** what structural units make up metallic solids?
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A 10.4 g sample of CaSO4 is found to contain 3.06 g of Ca and 4.89 g of O. Find the mass of sulfur in a sample of CaSO4 with a m
andrey2020 [161]

The mass of sulfur in a sample of CaSO4 with a mass of 65.8 g is 15.50g.

<h3>How to calculate mass of an element in a compound?</h3>

According to this question, a 10.4 g sample of CaSO4 is found to contain 3.06 g of Ca and 4.89 g of O.

This means that the mass of sulfur in the 10.4g of CaSO4 is 10.4g - (3.06g + 4.89g) = 10.4g - 7.95g = 2.45g

Next, we calculate the percent ratio of each element in the compound; CaSO4.

  • Ca = 3.06g/10.4g × 100 = 29.42%
  • S = 2.45g/10.4g × 100 = 23.56%
  • O = 4.89g/10.4g × 100 = 47.02%

According to this question, a sample of CaSO4 with a mass of 65.8 g is given. The mass of each element in this compound is as follows:

  • Ca = 29.42/100 × 65.8g = 19.36g
  • S = 23.56/100 × 65.8g = 15.50g
  • O = 47.02/100 × 65.8g = 30.94g

Therefore, the mass of sulfur in a sample of CaSO4 with a mass of 65.8 g is 15.50g.

Learn more about mass at: brainly.com/question/13672279

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2 years ago
In general, atmospheric pressure is greatest near Earth's surface and ____ as you move upward away from sea level.
sweet-ann [11.9K]
Decreases, when you move upward and increases moving in due to various forces like gravity
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