What is the density of an block of salt having a mass of 8.0 g and a volume of 25 cm3?

Chemistry

2 answers:

iren [92.7K]3 years ago

8 0

Density is mass divided by volume
So...
D = 8/25 = 0.32 g/cm^3

Semmy [17]3 years ago

7 0

Do the formula D = m/v 

d = ( 8.0 grams ) / ( 25 c )

d = 0.32 grams / c

d = ( 0.32 g / c ) ( 1.0 x 10^6 c / c ) ( 1 kg / 1000 kg ) 

d = 320 kg / c

The answer is choice C. ✅

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A gas that occupies 50.0 liters has its volume increased to 68 liters when the pressure was changed to 3.0 ATM. What was the ori

Yuliya22 [10]

Answer:

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Explanation:

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Where P₁ and V₁ are the initial pressure and volume respectively, and P₂ and V₂ are final pressure and volume, respectively.

From the problem, we have:

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P₁= (P₂ x V₂)/V₁= (3.0 atm x 68.0 L)/(50.0 L)= 4.08 atm ≅ 4.1 atm

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2 years ago

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PIT_PIT [208]

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3 years ago

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denis23 [38]

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First of all, we set up an equilibrium expression for the given chemical equation at equilibrium, in which water is omitted for it is liquid and just aqueous species are allowed to be included:

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Then, since the concentration of these ions equal that of the conjugated acid of the ibuprofen (IBH⁺), we can plug in these and the Kb to obtain:

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