2 years ago

1) What is the formula for calculating weight

Chemistry

1 answer:

MatroZZZ [7]2 years ago

7 0

Weight we calculate using W= force multiplied to displacement

Mass SI unit is Kg

Weight SI unit is Newton (N)

Mass

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If you have 0.50 mol of ca, how many atoms are present?

Evgen [1.6K]

Answer is: there are 3.011·10²³ atoms of calcium.

n(Ca) = 0.50 mol; amount of substance(calcium).
Na = 6.022·10²³ 1/mol; Avogadro's constant or number.
N(Ca) = n(Ca) · Na.
N(Ca) = 0.50 mol · 6.022·10²³ 1/mol.
N(Ca) = 3.011·10²³; number of calcium atoms.
The mole is an SI unit which measures the number of particles in substance. One mole is equal to 6.022·10²³ atoms.

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Which acid and base react in the formation of salt sodium chloride? hydrochloric acid and sodium hydroxide sodium carbonate and

malfutka [58]

Hydrochloric acid and sodium hydroxide

HCl + NaOh ----> NaCl + H2O

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Rust forms because iron and oxygen are highly ______ elements.

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IT forms because they are highly reactive elements.

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How many atoms are in 1.15 mole Cu?

xxMikexx [17]

6.022x10^23 is Avogadro’s number. Use this whenever you work with Stoichiometry involving Atoms, formula units, or molecules. 1 mol of anything is always Avogadro’s number.

Multiply everything on the top= 6.93 x 10^23
Divide by everything on the bottom = 6.93 x 10^23
Answer: 6.93 x 10^23 atoms Cu.

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Answer:

add it all up

Explanation:

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