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2 years ago

How many moles are in 20 grams of Ar?

Chemistry

1 answer:

pashok25 [27]2 years ago

7 0

Answer:

moles Ar in 20g = 0.500 mole Ar

Explanation:

moles = grams given / formula weight = 20g / 39.948g·mol⁻¹ = 0.500 mole Ar

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2 years ago

When 0.620 gMngMn is combined with enough hydrochloric acid to make 100.0 mLmL of solution in a coffee-cup calorimeter, all of t

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Answer:

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Explanation:

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$q=m\times c\times (T_{final}-T_{initial})$

where,

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$T_{initial}$ = initial temperature = $28.9^oC$

Now put all the given values in the above formula, we get:

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Now we have to calculate the enthalpy change during the reaction.

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where,

$\Delta H$ = enthalpy change = ?

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How many moles are in 20 grams of Ar?​

How many moles are in 20 grams of Ar?