In the gaseous state, chlorine exists as a diatomic molecule cl2 (molar mass = 70.9 g/mol). calculate the number of moles of chlorine present in 140 g of chlorine gas. express the quantity in moles to three significant figures.

Cl is stable as a diatomic molecule where the 2 Cl atoms are held together by a covalent bond

molar mass of the diatomic molecule is 70.9 g/mol

therefore 70.9 g of Cl₂ is - 1 mol

then 140 g of Cl₂ is - 1/70.9 x 140 = 1.97 mol

there are 1.97 mol of Cl₂ present

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explanation:

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the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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