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Nikolay [14]
4 years ago
6

Which category of elements coposes groups 1-12 on the periodic table?

Chemistry
1 answer:
Dimas [21]4 years ago
5 0
I'm pretty sure its metals.
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N2 + 3H2 - 2NH3
vladimir1956 [14]

The number of mole of nitrogen gas, N₂, needed to produce 150 g of ammonia, NH₃ is 4.41 moles

<h3>How to determine the mole of NH₃ produced </h3>
  • Mass of NH₃ = 150 g
  • Molar mass of NH₃ = 14 + (3×1) = 17 g/mol
  • Mole of NH₃ =?

Mole = mass /molar mass

Mole of NH₃ = 150 / 17

Mole of NH₃ = 8.82 moles

<h3>How to determine the mole of N₂ needed </h3>

Balanced equation

N₂ + 3H₂ —> 2NH₃

From the balanced equation above,

2 moles of NH₃ were produced by 1 mole of N₂.

Therefore,

8.82 moles of NH₃ will be produced by = 8.82 / 2 = 4.41 moles of N₂.

Thus, 4.41 moles of N₂ is  needed for the reaction.

Learn more about stoichiometry:

brainly.com/question/14735801

4 0
2 years ago
Indicate whether the substance exists in aqueous solution (a) entirely in molecular form, (b) entirely as ions, (c) or as a mixt
eduard

Answer:

In aqueous solution, HF is an acid, exist as a mixture of molecules and ions

CH3CN is none of the above, entirely in molecular form

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6 0
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The modern model of the atom shows that electrons are(1) orbiting the nucleus in fixed paths(2) found in regions called orbitals
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<span>The correct answer is 2. Electrons are found in regions called orbitals. These orbitals are neither fixed paths nor solids, but are better visualized as cloud-like space, making 1 and 4 incorrect. Additionally, 3 is incorrect because the orbitals are outside of the nucleus, while the protons and neutrons are inside the nucleus. Hope I helped! :) Cheers!</span>
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When water is mixed with copper sulfate the water turned a blue colour. Is this a physical or chemical property. Explain your an
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Answer:

Physical

Explanation:

No new properties were added, a blue liquid and a clear liquid making a blue liquid is just a mixture because they have not chemically combined.

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3 years ago
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