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arlik [135]
3 years ago
11

What is an element made up of?​

Chemistry
2 answers:
Virty [35]3 years ago
7 0

Answer:

An element is a pure substance and is made of only one type of atom.

Explanation:

You should get that right...

Dvinal [7]3 years ago
6 0

Answer:

An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance. Overview: In this activity, students practice using the periodic table to look up chemical symbols of elements and use paper circles to construct and compare models of elements and compounds.

Explanation:

please mark me brainliest.please!

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Consider the reaction:
Fofino [41]

The mass in grams of NH₃ produced from the reaction is 3.4 g

<h3>Balanced equation</h3>

We'll begin by writing the balanced equation for the reaction. This illustrated below:

N₂ + 3H₂ -> 2NH₃

From the balanced equation above,

1 dm³ of N₂ reacted to produced 2 dm³ NH₃

<h3>How to determine the volume of NH₃ produced</h3>

From the balanced equation above,

1 dm³ of N₂ reacted to produced 2 dm³ NH₃

Therefore,

2.24 dm³ of N₂ will react to produce = 2.24 × 2 = 4.48 dm³ of NH₃

<h3>How to determine the mass of NH₃ produced</h3>

We'll begin by obtained the mole of 4.48 dm³ of NH₃. Details below:

22.4 dm³ = 1 mole NH₃

Therefore,

4.48 dm³ = 4.48 / 22.4

4.48 dm³ = 0.2 mole of NH₃

Finally, we shall determine the mass of NH₃ as follow:

  • Molar mass of NH₃ = 17 g/mol
  • Mole of NH₃ = 0.2 mole
  • Mass of NH₃ =?

Mass = mole × molar mass

Mass of NH₃ = 0.2 × 17

Mass of NH₃ = 3.4 g

Learn more about stoichiometry:

brainly.com/question/13196642

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1 year ago
How does Precipitation Form
Damm [24]
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compared to the energy released per mole of reactant during chemical reactions the energy released per mole of reactant during n
Zolol [24]

Answer:

\boxed{\text{Roughly a million times greater}}.

Explanation:

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The ratio is  

\dfrac{1.5 \times 10^{10} }{5000} \approx 3 \times 10^{6}\\\\\text{The energy released by nuclear reactions is } \boxed{\textbf{roughly a million times greater}}\\\text{ than that released during chemical reactions.}

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4 years ago
Explain the process of separating a mixture consisting of iron fillings and sand in a plastic bowl.
Ne4ueva [31]
HEY THERE

THATS EASY...

YOU CAN USE A MAGNET TO ATTRACT THE IRON FILLINGS WHICH WOULD THEN SEPARATE FROM THE SAND.
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4 years ago
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Determine the molar mass of carbon dioxide (CO2)
Sergio039 [100]
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