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Leya [2.2K]
3 years ago
13

How do you know if a new substance is formed in a chemical equation

Chemistry
1 answer:
S_A_V [24]3 years ago
7 0

<u>Answer:</u> The indicators written will identify a new substance is formed in a chemical equation.

<u>Explanation:</u>

A chemical equation is defined as the equation in which reactants and products are present and are separated by a right arrow.

\text{Reactants}\rightarrow \text{Products}

Indicators of a chemical reaction are:

  • Formation of a precipitate
  • Evolution of gas
  • Formation of bubbles
  • Color change
  • Specific odor
  • Change in temperature

Hence, the indicators written will identify a new substance is formed in a chemical equation.

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Determine whether you can swim in 1.00 x 10^27 molecules of water.​
zloy xaker [14]

Answer:

We can not swim in 1.00 × 10²⁷ molecules of water

Explanation:

The given number of molecules of water = 1.00 × 10²⁷ molecules

The Avogadro's number, N_A, gives the number of molecules in one mole of a substance

N_A ≈ 6.0221409 × 10²³ molecules/mol

Therefore

Therefore, we have;

The number of moles of water present in 1.00 × 10²⁷ molecules, n = (The number of molecules of water) ÷ N_A

∴ n = (1.00 × 10²⁷ molecules)/(6.0221409 × 10²³ molecules/mol) = 1,660.53902857 moles

The mass of one mole of water = The molar mass of water = 18.01528 g/mol

The mass, 'm', of water in 1,660.53902857 moles of water is given as follows;

Mass = (The number of moles of the substance) × (The molar mass of the substance)

∴ The mass of the water in the given quantity of water, m = 1,660.53902857 moles × 18.01528 g/mol ≈ 29.9150756 kg.

The density pf water, ρ = 997 kg/m³

Volume = Mass/Density

∴ The volume of the water present in the given quantity of water, v = 29.9150756 kg/(997 kg/m³) ≈ 30.0050909 liters

The volume of the water present in 1.00 × 10²⁷ molecules of water ≈ 30.0 liters

The average volume of a human body = 62 liters

Therefore, we can not swim in the given quantity of 1.00 × 10²⁷ molecules = 30.0 liters water

7 0
2 years ago
CH4(g) gas reacts with F2(g) to produce CH3F(g) and HF(g) .
Ugo [173]

Answer:

I am looking for this as well. Can someone please help!

Explanation:

6 0
2 years ago
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Describe how adding the prefix mega to a unit affects the quantity being described
neonofarm [45]

If the prefix mega is added to the unit of the quantity being described, the magnitude of quantity increases by 10^{6} times i.e. 1 million times.

For Example- 1 MW = 1000000 watts


5 0
3 years ago
CH3-CHCl-CH2-CH2-CH2CHCl-CH3 +concentrated KCN
Phantasy [73]
Is this chemistry or something else?
8 0
3 years ago
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Which two compounds are molecules which both contain a double bond
Mademuasel [1]

Answer:

Double bond

Chemical compounds with double bonds.

Ethylene Carbon-carbon double bond.

Acetone Carbon-oxygen double bond.

Dimethyl sulfoxide Sulfur-oxygen double bond.

Diazene Nitrogen-nitrogen double bond.

Explanation:

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