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drek231 [11]
3 years ago
13

How many grams of oxygen are in a half a cup of water

Chemistry
1 answer:
USPshnik [31]3 years ago
8 0

Answer:  2.78 moles of molecular oxygen will occupy 62.22 liters.

Explanation:

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Which sediment type requires the least amount of energy to be eroded
castortr0y [4]

Answer:

SEDIMENTARY ROCK

Explanation:

8 0
4 years ago
N2(g) + 3H2(g) →2NH3(g)
monitta

Answer:

2.5 moles of N₂ and 7.5 moles of H₂ entered the reaction

Explanation:

In reaction:

N₂(g) + 3 H₂(g) → 2 NH₃(g)

You can see that the stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) requires the following amounts of reagents and are produced:

  • N₂: 1 mole
  • H₂: 3 moles
  • NH₃: 2 moles

The following three rules can apply:

  • If 2 moles of NH₃ are produced from 1 mole of N₂ by stoichiometry of the reaction, 5 moles of NH₃ from how many moles of N₂ are produced?

moles of N_{2} =\frac{5 moles of NH_{3} *1 mole of N_{2} }{2 moles of NH_{3}}

moles of N₂= 2.5

  • If 2 moles of NH₃ are produced from 3 moles of H₂ by stoichiometry of the reaction, 5 moles of NH₃ from how many moles of H₂ are produced?

moles of H_{2} =\frac{5 moles of NH_{3} *3 mole of H_{2} }{2 moles of NH_{3}}

moles of H₂= 7.5

<u><em>2.5 moles of N₂ and 7.5 moles of H₂ entered the reaction</em></u>

6 0
3 years ago
What is the purpose of constructing a calibration curve
stellarik [79]

Answer:

Calibration curves are used to understand the instrumental response to an analyte, and to predict the concentration of analyte in a sample.

5 0
3 years ago
What frequency corresponds to an absorption line at 502 nm?
wlad13 [49]
Answer is D absorption line at 502
4 0
4 years ago
How many oxygen molecules in 2.3x10-⁸g of molecular oxygen ​
cluponka [151]

Answer:

6.321 × 10^22

Explanation:

Mass of Oxygen =

3.36

g

Molar mass of oxygen (

O

2

) = 16 x 2 =

32

g

m

o

l

−

Total molecules in oxygen = Mass in grams/Molar mass x

N

A

=

3.36

32

x

6.02

x

10

23

=

6.321

x

10

22

Note:

N

A

(Avagadro's number) =

6.02

x

10

23

Hope it helps...

3 0
3 years ago
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