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34kurt
4 years ago
7

The mass unit associated with density is usually grams. If the volume (in mL or cm3) is multiplied by the density (g/mL or g/cm3

) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation.
If a large marshmallow has a volume of 3.25 in3 and density of 0.242 g/cm3, how much would it weigh in grams? 1 in3=16.39 cm3.
Chemistry
1 answer:
Ostrovityanka [42]4 years ago
3 0

12.89g

Explanation:

Given parameters:

Volume of marshmallow = 3.25in³

Density of marshmallow = 0.242g/cm³

Unknown:

Mass of the marshmallow = ?

Solution:

Density is defined as the amount of substance per volume of space.

Density  = \frac{mass}{volume}

The unknown is mass;

  Mass of marshmallow = Density x volume

Now;

  convert the given volume to cm³:

                   1in³ = 16.39cm³

                 3.25in³ = 3.25 x 16.39 = 53.27cm³

Input the parameters in the expression;

  Mass of marshmallow = 0.242\frac{g}{cm^{3} }  x 53.27cm³ = 12.89g

 This gives 12.89g

learn more:

Density brainly.com/question/2690299

#learnwithBrainly

       

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When 100 cm3 of a saturated solution of KClO3 at 40°C is evaporated, 14.0g of the salt is recovered. What is the solubility of K
strojnjashka [21]

Explanation:

kclo3- 39+35.5+16*3=122.5

molar mass = 122.5

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solubility in mol/dm3 or molarity = ?

but we know that

no of moles = solubility in mol/dm3×vol in cm3

---------------------------------------------

1000

no of moles = mass

---------

molar mass

mass\molar mass= solubility in mol/dm3 *vol in cm3/ 1000

14.0/122.5=x * 100/1000

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ludmilkaskok [199]

According to Einstein the energy of photon is given by the equation,

E = hν = h . c/λ

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