2 years ago

A student measures a mass of an 8cm3 block of brown sugar to be 19.9G. what is the density of the brown sugar?

Chemistry

1 answer:

Naily [24]2 years ago

3 0

Answer:

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question we have

$density = \frac{19.9}{8} \\ = 2.4875$

We have the final answer as

Hope this helps you

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The chemical formula for the compound strontium sulfide, which contains Sr2+ and S2– ions, is

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The chemical formula for the compound strontium sulphide would be SrS.

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3 years ago

How much heat is required to increase the temperature of 100.0 grams of iron from 15.0oC to 40.2oC? (The specific heat of iron i

Ksenya-84 [330]

Answer is: 1160 J of heat Is required to increase the temperature.
m(Fe) = 100 g.
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Q = m(Fe) • C • ∆T.
Q = 100 g • 0,46 J/g•°C • 25,2°C
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2 years ago

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nordsb [41]

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2 years ago

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Zn-64 = 48.63%

sladkih [1.3K]

Answer:

A = 65.46 u

Explanation:

Given that,

The composition of zinc is as follows :

Zn-64 = 48.63%

Zn-66 = 27.90%

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Zn-70 = .62%

We need to find the average atomic mass of the given element. It can be solved as follows :

$A=\dfrac{48.63\times 64+27.90\times 66+4.1\times 67+18.75\times 68+0.62\times 70}{100}\\A=65.46\ u$

So, the average atomic mass of zinc is 65.46 u.

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goldenfox [79]

Answer:

True

Explanation:

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3 years ago

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