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AnnyKZ [126]
3 years ago
14

A brick has a mass of 100 G and a volume of 25CM3 what is the density of the brick

Chemistry
1 answer:
kumpel [21]3 years ago
5 0

Answer:

\boxed {\boxed {\sf 4 \ g/cm^3}}

Explanation:

We are asked to find the density of a brick. Density is a substance's mass per unit volume. The formula for calculating density is as follows.

\rho= \frac{m}{v}

The mass of the brick is 100 grams and the volume is 25 cubic centimeters.

  • m= 100 g
  • v= 25 cm³

Substitute the values into the formula.

\rho= \frac{ 100 \ g}{25 \ cm^3}

Divide.

\rho=4 \ g/cm^3

The density of the brick is <u>4 grams per cubic centimeter.</u>

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Leto [7]

Answer: The nuclide symbol of X is ^{231}_{90}\textrm{Th}

Explanation:

The given nuclear reaction is a type of alpha decay process. In this process, the nucleus decays by releasing an alpha particle. The mass number of the nucleus is reduced by 4 units and atomic number is also decreased by 2 units. The particle released is a helium nucleus.

The general equation representing alpha decay process is:

_{Z}^{A}\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\textrm{He}

For the given equation :

^{235}_{92}\textrm{U}\rightarrow ^{A}_{Z}\textrm{X}+^4_2\textrm{He}

As the atomic number and mass number must be equal on both sides of the nuclear equation:

^{235}_{92}\textrm{U}\rightarrow ^{231}_{90}\textrm{Th}+^4_2\textrm{He}

Thus the nuclide symbol of X is ^{231}_{90}\textrm{Th}

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3 years ago
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san4es73 [151]
Kind of hard to explain
3 0
3 years ago
Sulfur dioxide So2 is present in our atmosphere and is used as a preservative in foods. Is it possible to use the common charges
telo118 [61]

Answer:

Your question is not interpreted very well, but as regards what is observed, SO2 is not the formula for sulfur oxide, the formula for sulfur oxide is SO since the valence used in sulfur would be +2 and oxygen -2 therefore the sum of these valences would be equal to zero, therefore it would be the correct thing considering the true equation as SO

Explanation:

There are also sulfur dioxide, or sulfur trioxide, which is usually used in the formation of tertiary salts such as copper sulfate.

sulfur trioxide and sulfur dioxide are synonymous with sulfate or sulphite

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3 years ago
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Vadim26 [7]
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F = 9/5*39 + 32 = 70,2 + 32 = 102,2° F
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