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kiruha [24]
2 years ago
7

3. For each equation, state the reaction type and then balance the equation.

Chemistry
1 answer:
Natali5045456 [20]2 years ago
4 0
2 KCIO3 -> 2 KCI + 3 O2
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Choose the three chemical properties of a penny
lukranit [14]

The three chemical properties of a penny

Penny ( Pennies: plural; refer to a number of individual coins)

  • A chemical property of a substance is a characteristic of a particular substance that can be observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.

<h3>What is chemical property?</h3>

The chemical properties of a substance can be determined by performing experiments that use specific materials or processes with known characteristics.

The following are three chemical properties to consider when choosing an element to make coins:

  • Reactivity to water.

  • Reactivity to oxygen.

  • malleability.

It should malleable, ductile, and an extremely good conductor of both heat and electricity.

Read more about penny:

brainly.com/question/19104371

3 0
2 years ago
Iron(iii) oxide is formed when iron combines with oxygen in the air. How many moles of Fe2O3 are formed when 55.8 g or Fe reacts
iogann1982 [59]

Answer: The correct answer is Option B.

Explanation:

To calculate the number of moles, we use the formula:

Moles=\frac{\text{Given mass}}{\text{Molar mass}}

  • <u>Moles of Iron</u>

Molar mass of iron = 55.8 g/mol

Given mass of iron = 558.8

Putting values in above equation, we get:

Moles=\frac{55.8g}{55.8g/mol}=1mole

For the given chemical equation:

4Fe(s)+3O_2(g)\rightarrow 2Fe_2O_3(s)

By Stoichiometry,

4 moles of Iron produces 2 moles of Iron(III) oxide

So, 1 mole of Ion will produce = \frac{2}{4}\times 1 = 0.5 mole of Iron (III) oxide.

Hence, the correct answer is Option B.

8 0
2 years ago
Question 3 help me asap please
e-lub [12.9K]

Its chemical formula H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. "Water" is the name of the liquid state of H2O at standard conditions for temperature and pressure.

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Because when the cells divide (resulting in more cells) the multicellular organism mantains its strong cells and when one cell is damaged the other cells compensate for that damaged cell.
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Which particles make up the nucleus of an atom?
Anuta_ua [19.1K]
Protons and neutrons
electrons just revolve around it
3 0
3 years ago
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