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Alisiya [41]
3 years ago
8

If the density of an object is 5 g/cm3 and it takes up 7 cm3 of space, calculate the mass?

Chemistry
1 answer:
statuscvo [17]3 years ago
8 0

Answer:

<h2>The answer is option A</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of object = 7 cm³

density = 5 g/cm³

The mass of the object is

mass = 5 × 7

We have the final answer as

<h2>35 g</h2>

Hope this helps you

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Answer:

in nuclear fusion deep in the interiors of stars

Explanation:

Nuclear fusion -

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Hence , a nuclear fusion occurs deep inside the stars .

7 0
3 years ago
A mixture of caco3 and (nh4)2co3 is 60.7 % co3 by mass. part a find the mass percent of caco3 in the mixture.
blagie [28]

The mixture contains:

CaCO3 + (NH4)2CO3 in which the amount of carbonate CO3 = 60.7% by mass

Let, the total mass = 100 grams

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Thus,       x + y = 100 ------------(1)

Mass of CO3 = 60.7% = 60.7 g

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Total # moles of CO3 = 60.7 g/60 g.mol-1 = 1.012 moles

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moles CaCO3 + moles (NH4)2CO3 = 1.012

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based on equation 1 we can write: y = 100-x

x/100 + (100-x)/96 = 1.012

x = 71.2 g

Mass of CaCO3 = 71.2 g



7 0
3 years ago
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Artist 52 [7]

Hi there! Let's tackle this together.

The answer to the question is option A.

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Explanation:

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