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S_A_V [24]
3 years ago
14

Calculate the density of a material that has a mass of 52.457 g and a volume of 13.5 cm3.

Chemistry
1 answer:
emmasim [6.3K]3 years ago
5 0

Answer:

3.8857037037g per cm3

Explanation:

52.357g/13.5 cm3 = 3.8857037037

Round if needed

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How many moles are in 1.93x1023 particles of Na3PO4?
Tresset [83]

Answer:

<h3>The answer is 0.32 moles</h3>

Explanation:

To find the number of moles given the number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 1.93 × 10²³ particles

We have

n =  \frac{1.93 \times  {10}^{23} }{6.02 \times  {10}^{23 } }  \\  = 0.320598006...

We have the final answer as

<h3>0.32 moles</h3>

Hope this helps you

6 0
3 years ago
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If one molecule of glucose (C6H120) reacts completely with three molecules of oxygen (O2), what is the TOTAL number of atoms
nalin [4]

Answer : The total number of atoms in the product are, 36 atoms.

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

When 1 molecule of glucose reacts completely with 3 molecules of oxygen then it react to give 6 molecules of carbon dioxide and 6 molecules of water.

The balanced chemical reaction will be:

C_6H_{12}O_6+6O_2\rightarrow 6CO_2+6H_2O

There are 3 atoms in carbon dioxide and 3 atoms in water.

Total number of atoms in the product = 6(3) + 6(3) = 36 atoms

Thus, the total number of atoms in the product are, 36 atoms.

5 0
3 years ago
What best explains the type of energy present in the vibrating atoms of a substance
luda_lava [24]
The type of energy present in the vibrating atoms of a substance is a thermal energy and it is a kinetic type of energy. It is associated with movement within the crystal lattice of substance. ... Eventually, it can lead to motion of the atoms which is a form of kinetic energy.
7 0
3 years ago
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masya89 [10]

Answer:

The answer is below

Explanation:

Sulfuric acid is used for various purposes, some of which include the following:

1. It is used in the production of various manufactured goods.

2. It is used in the manufacturing of chemicals

3. It is also used in the making of fertilizer

4. It is used in the refining process of petroleum products

5. It is used in the processing of metals

3 0
3 years ago
What would be another property that we Earthlings could use to classify stars?
Blizzard [7]

Answer: At the point when space experts take a gander at an article's range, they can decide its arrangement dependent on these frequencies. The most well-known technique stargazers use to decide the sythesis of stars, planets, and different articles is spectroscopy. This spread-out light is known as a range.

Explanation:

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