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AlekseyPX
3 years ago
13

How many molecules are in a sample of sucrose that has a mass of 15.0 G

Chemistry
1 answer:
garri49 [273]3 years ago
5 0
2.6394*10^22 is the answer
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Why is there a change in energy during chemical reactions?(1 point)
Firdavs [7]

Energy is released by the formation of chemical bonds, and energy is

absorbed when the bonds are broken.

<h3>What is a chemical reaction?</h3>

A chemical reaction involves the formation of new compounds from

reactants . It involves the formation and breaking of bonds in the

elements.

Energy is released by the formation of chemical bonds and this type of

reaction is referred to as exothermic while energy is absorbed when the

bonds are broken and is referred to as an endothermic reaction.

Read more about Chemical reaction here brainly.com/question/16416932

8 0
2 years ago
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Classify which compounds will dissolve in water and which ones will not dissolve in water.
vredina [299]

Answer:

Dissolves in water: Acetone, 1-propanol, Methanol

Do not dissolve in water: Hexane, Decane

Explanation:

From the principle that like dissolves like,polar substances will dissolve in polar solutions, while non-polar substances will dissolve in non-polar substances.

Water is a polar solution, therefore, polar substances will dissolve in it.From the given options:

Acetone is a polar molecule, therefore, it will dissolve in water.

1-propanol is a polar molecule, therefore, it will dissolve in water.

Hexane is a non-polar molecule, therefore, it will not dissolve in water.

Methanol is a polar molecule, therefore, it will dissolve in water.

Decane is a non-polar molecule, therefore, it will not dissolve in water

6 0
3 years ago
(V) A solution of hydrogen chloride is an electrolyte but a solution of
tiny-mole [99]

Answer:

When hydrogen reacts with chlorine, hydrogen chloride is formed. Hydrogen chloride is a gas, and has the formula HCl(g).

When hydrogen chloride dissolves in water, hydrochloric acid is formed. This has the same formula, but you can tell the difference because of the state symbol (aq), which stands for ‘aqueous’. The formula is written as HCl(aq).

Hydrogen chloride is made from molecules. The hydrogen atom and the chlorine atom are joined by a covalent bond. When hydrogen chloride forms hydrochloric acid, the molecules split into ions.

HCl(aq) → H+(aq) + Cl-(aq)

The H+ ions make this aqueous solution acidic. The solution also conducts electricity because it contains ions that are free to move.

However, when hydrogen chloride gas dissolves in a solvent called methylbenzene, the molecules do not split up. A solution of HCl in methylbenzene does not contain hydrogen ions, so it is not acidic. The solution also has a low electrical conductivity.

4 0
3 years ago
Which is an outer planet?​
raketka [301]

Answer:

2. Saturn

Explanation:

The four planets farthest from the Sun are the outer planets. ... From left to right, the outer planets are Jupiter, Saturn, Uranus, and Neptune. The gas giants are made up primarily of hydrogen and helium, the same elements that make up most of the Sun.

4 0
2 years ago
Read 2 more answers
A 50.0 ml sample of 0.108 m h2so4 is diluted to 250.0 ml. what is its new molarity?
Aleksandr [31]

A 50.0 ml sample of 0.108 m h2so4 is diluted to 250.0 ml. Its new molarity will be 0.0216 m.

Dilution would be the process of lowering a solute's concentration in a solution. It usually just includes combining the solution with much more solvent, such as water. A solution is diluted when more solvent is added without increasing solute.

Molarity can be calculated by using the formula:

M_{1} V_{1} = M_{2} V_{2}

where, M is molarity and V is volume.

Given data:

M_{1} = 0.108 m

V_{1} = 50 ml

V_{2} = 250 ml

Put the value of given data in above equation.

0.108 m × 50 ml = M × 250ml

M = 0.0216 m

Therefore, the new molarity will be 0.0216 m.

To know more about molarity

brainly.com/question/11675747

#SPJ4

3 0
1 year ago
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