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3 years ago

The combination nation of two or more atoms from same or different elements creates a(n)

Chemistry

2 answers:

Olenka [21]3 years ago

8 0

It’s is molecule
:):):):):):):):)

Dennis_Churaev [7]3 years ago

3 0

Answer molecule

Explanation: The combination of two or more atoms, from the same or different elements, creates a molecule. Compounds are a type of molecules made of atoms from different elements held together by chemical bonds.

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How many atoms of hydrogens are found in 3.21 mol of C3H8?

damaskus [11]

Answer:

1.55 × 10²⁵ atoms of H

Explanation:

3.21mol C₃H₈ × 8mol H × (6.022×10²³)

8 0

3 years ago

What is the correct formula for Heptarsenic Tetrabromide

harina [27]

Hepta is seven and tetra is four, so option c is your answer

3 0

4 years ago

acetylene gas c2h2 undergoes combustion to produce carbon dioxide and water vapor How many grams of water are produced by the sa

ella [17]

Answer: The amount of water produced in the given reaction is $0.692x$ grams.

Explanation:

Let us assume that the initial amount of acetylene gas given be 'x' grams. Now, to calculate the number of moles, we will use the formula:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ....(1)

Given mass of acetylene = x grams

Molar mass of acetylene = 26 g/mol

Putting values in above equation, we get:

$\text{Number of moles of acetylene}=\frac{xg}{26g/mol}=\frac{x}{26}mol$

The reaction of combustion of acetylene is given by the equation:

$2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O$

By Stoichiometry of the reaction:

2 moles of acetylene produces 2 moles of water.

So, $\frac{x}{26}$ moles of acetylene will produce = $\frac{2}{2}\times \frac{x}{26}=\frac{x}{26}$ moles of water.

Now, to calculate the amount of water produced, we use equation 1:

Molar mass of water = 18 g/mol

Moles of water = $\frac{x}{26}mol$

Putting values in equation 1, we get:

$\frac{x}{26}mol=\frac{\text{Mass of water}}{18g/mol}$

$\text{Mass of water}=\frac{x}{26}\times 18=0.692x$ grams

8 0

3 years ago

Write a scientific explanation that answers the following question: How do you know scientifically that fat and soap are differe

Fantom [35]

Fat and soap are different substances. One reason is that they have a different malleability. The Soap is very hard and sturdy. The fat is soft. Also, soap and fat are different because they had different smells. The soap had a refreshing smell and a soapy one and the fat smelled rubbery like Play-doh. Another reason why fat and soap are different substances is that they don’t dissolve the same in water and oil. Soap is soluble in water and shortening is not soluble in water. Soap is not soluble in oil and shortening is soluble in oil. In the water shortening did not become cloudy but soap did. When placed in oil, the shortening disappeared completely, while soap did not change at all.The melting point of the fat was 57.6 we could not find the melting point of the soap. The soaps melting point is higher than the water's boiling point. A property is something that describes an object and does not change. For example, the soap is white, where the fat is off white. Color is a property. Fat and soap are also different because they have different densities. The soap sank but the fat floated. The density of fat is about .88 g/ml and the density of soap is about 1.18 g/ml. Fat and soap are not the same substances one reason is they have different properties.Malleability, hardness, solubility, melting point,color, and density are all properties. A property is a characteristic of a substance that does not change. Different substances have different properties. If they had the same properties, they would be the same substance, but, since they don’t, they are different substances.

Hope this helps :D

5 0

4 years ago

How do chemists explain on a molecular basis

Juli2301 [7.4K]

Explanation:

It happens because particles of gas are in constant random motion. Thus they can collide with the walls of the container causing pressure on the walls.

4 0

3 years ago