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kaheart [24]
3 years ago
8

Which number in a chemical formula tells you how many atoms of element you have

Chemistry
2 answers:
galina1969 [7]3 years ago
4 0

Answer:it doesn’t

Explanation:

Ne4ueva [31]3 years ago
4 0

Answer:

Subscript

Explanation:

Atoms in a chemical formula are represented by a subscript.

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The Law of Conservation of Mass states that mass is neither created nor destroyed during cher
dmitriy555 [2]
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3 years ago
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How many more grams should be added​
Minchanka [31]

Answer:

50?

I think but not 100% sure if not lmk

4 0
3 years ago
Classify each of the following as a combination, decomposition, single replacement, double replacement, or combustion reaction:
hjlf

Answer:

1) single replacement

2) combustion reaction.

3) double replacement reaction

4) combination reaction

5) decomposition reaction

Explanation:

Chemical equation:

Fe₂CO₃ + 3C  →   2Fe + 3CO

The given reaction is single replacement reaction. In this reaction carbon react with Fe₂CO₃ and replace the iron from CO₃²⁻ and form free iron and carbon monoxide.

Chemical equation:

C₂H₄ + 3O₂   →  2CO₂ + 2H₂O

The given reaction is combustion reaction. In which ethene burn in the presence of oxygen form carbon dioxide and water.

Chemical equation:

Fe₂O₃ + 6HCl   →  2FeCl₃ + 3H₂O

The given reaction is double replacement reaction. In which anion and cation of both reactants exchange with each others.

Chemical equation:

2Al + 2Br₂ →  2AlBr₃

The given reaction is combination reaction in which aluminium and bromine combine to form aluminium bromide.

Chemical equation:

C₆H₁₂O₆   →    6C + 6H₂O

The given reaction is decomposition reaction in which glucose molecule decompose to give water and carbon.

7 0
3 years ago
If a sample of neon gas at 25.00∘C and 0.500 atm is heated at a constant volume until the pressure is 0.850 atm, what must be th
Pie

Answer:

T₂ = 506.6 K

Explanation:

Given data:

Initial pressure of gas = 25°C (25+273 =298 K)

Initial temperature = 0.500 atm

Final pressure = 0.850 atm

Final temperature = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

0.500 atm / 298 K = 0.850 atm /T₂

T₂ = 0.850 atm × 298 K / 0.500 atm

T₂ = 253.3 atm. K / 0.500 atm

T₂ = 506.6 K

8 0
2 years ago
3 H2S + 2 HNO3 +35 + 2 NO + 4 H2O
Anettt [7]

Element Oxidized: S (S^(2-) --> S⁰)

Element Reduced: N (N^(5+) --> N(2+))

Oxidizing Agent: HNO3

Reducing Agent: H2S

3 0
2 years ago
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