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3 years ago

Is the mass of the reactants always equal to the mass of the products in a chemical reaction?

Chemistry

1 answer:

Sunny_sXe [5.5K]3 years ago

5 0

Answer: Yes, the mass of the reactants always equal to the mass of the products in a chemical reaction.

Explanation:

In a balanced chemical reaction, the mass of reactants is always equal to the mass of product that is a chemical reaction follows follows 'Law of Conservation of Mass'.

The law states that ' in a chemical reaction mass can neither be created nor be destroyed.

For example: $2H_2+O_2\rightarrow 2H_2O$

Mass of the reactants = Mass of products

$2(2\times 1amu)+1(2\times 16amu)=2(2\times 1amu+16amu)$

36 amu = 36 amu

Yes, the mass of the reactants always equal to the mass of the products in a chemical reaction.

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169 - 47 = 122.

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Answer:

0.005 mol

Explanation:

Moles is denoted by given mass divided by the molecular mass ,

Hence ,

n = w / m

n = moles ,

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m = molecular mass .

From the question ,

w = given mass of Gold = 1.05 g ,

m = molecular mass of Gold = 197 g/mol

<u>Hence , moles can be calculated as -</u>

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What mineral has the least hardness according to the scale?

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stearic acid and linoleic acid stearic acid and linoleic acid stearic acid has the higher melting point, because it has two more

elena55 [62]

Acid palmitic acid has higher melting point, because it has two more methylene groups.

$\text { Myristic acid } \rightarrow \mathrm{CH}_3\left(\mathrm{CH}_2\right)_{12} \mathrm{COOH} \\& \text { Palmitic acid } \rightarrow \mathrm{CH}_3\left(\mathrm{CH}_2\right)_{14} \mathrm{COOH} \\$

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Giving it a greater surface area and therefore more intermolecular van der waals interact than the myristic acid.

stearic arid $\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{16} \mathrm{COOH}$

linoleic acid $\mathrm{C}_{18} \mathrm{H}_{32} \mathrm{O}_2$ (two double bond)

Stearic acid has higher Melting point, because it does not have any Carbon-Carbon double bonds, whereas linoleic acid has two cis double bonds which prevent the molecules from packing closely together.

Oleic Acid and Linoleic acid.

$\mathrm{C}_{18} \mathrm{H}_{34} \mathrm{O}_2$ -one double bond (cis)

Acid palmitic acid has higher melting point, because it has two more methylene groups.

For more such question on methylene group.

brainly.com/question/4279223

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1 year ago