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zzz [600]
3 years ago
11

Is oxygen gas an element or a compound?

Chemistry
1 answer:
madreJ [45]3 years ago
6 0
It’s an element because oxygen is already a gas.
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Ammonia (NH3) can be produced by the reaction of hydrogen gas with nitrogen gas:
klio [65]

Answer:

10%

Explanation:

Given data:

Actual yield = 0.13 moles

Percent yield = ?

Solution:

Balanced chemical equation.

3H₂ + N₂    →   2NH₃

First of all we will calculate the mass of given moles of ammonia.

Number of moles = mass / molar mass

Mass = 0.13 × 17 g/mol

Mass = 2.21 g

2.21 g is experimental yield of ammonia.

Hydrogen is limiting reactant because only two moles of hydrogen present.

we will compare the moles of hydrogen and ammonia from balance chemical equation.                

                               H₂     :    NH₃

                                3       :     2

                                2       :     2/3×2 = 1.33 moles

Mass of ammonia

Mass = number of moles × molar mass

Mass = 1.33 mol × 17 g/mol

Mass = 22.61 g

Percent yield:

Percent yield = actual yield / theoretical yield × 100

Percent yield = 2.21 g / 22.61 g

Percent yield =9.8%  which is almost 10%

3 0
3 years ago
What are the states of matter for the following equation?
White raven [17]

Answer:

Explanation:

On the reactant side, XeO3 is a strong oxidizing agent. It can be a solid or gas. Most likely it is in a solid state.

H+ and Br- combine to form HBr which is a weak acid. So H+ and Br- are in an aqueous state.

On the product side, both Br2 and Xe are not very soluble in water. They will be in gaseous state and H2O is water i.e. liquid state.

7 0
2 years ago
Is air homogeneous or heterogeneous?
ivolga24 [154]

Answer:  yes, Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. Salt, sugar, and substances dissolve in water to form homogeneous mixtures. A homogeneous mixture in which there is both a solute and solvent present is also a solution

Explanation:

8 0
3 years ago
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Which of the following terms refers to the area immediately around the eye
Anit [1.1K]

Answer:

the eye socket

Explanation:

the area around the eye is called the eye socket or the eye orbit.

5 0
3 years ago
Please help meeee ;-;
Elena-2011 [213]

Answer:

number (12 is c)  (13 is 5) (14 is 5)

Explanation:

3 0
3 years ago
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