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Firlakuza [10]
4 years ago
9

What does E+mc^2 mean and how it came to be

Chemistry
1 answer:
Shalnov [3]4 years ago
4 0
E = mc^2<span> is an equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c 2 is the speed of light squared, or multiplied by itself.</span>
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Semmy [17]

Kinetic energy is the energy of moving things

3 0
3 years ago
How many atoms of the element with atomic number 11 are in the reactants of the given formula?
liq [111]

The number of Na atoms in the reactants = 2

<h3>Further explanation</h3>

Every chemical reaction involves compounds that can act as reactants or products

The reactants will react to produce products

The reactants are usually written on the left side of the reaction, while the products on the right side of the reaction

Reaction

2 NaCl + H₂SO₄ → 2 HCl + Na₂SO₄

The element with atomic number 11  = Na(Natrium)

The number of atoms of the element that reacts or is produced can be seen from the reaction coefficient and the number of atoms in the compound

Na in NaCl = 1 atom

From equation, cofficient for NaCl = 2, so number of atoms of Na=2 x 1 = 2

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3 years ago
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Answer:

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3 years ago
Find the relative molecular mass of hydrated iron (II) sulphate FeSO4.7H2O
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Answer:

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5 0
3 years ago
At the beginning of the experiment, the aspirin pill contains 325 mg of acetylsalicylic acid and weighs 400 mg. at the end of ex
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