What is a solution?what is the solvent of a solution

Answers

Answer 1

Answer: A simple solution is basically two substances that are evenly mixed together. One of them is called the solute and the other is the solvent. A solute is the substance to be dissolved (sugar). The solvent is the one doing the dissolving (water).

Answer 2

Answer:

Answer:

it isnt any

Explanation:

i think

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Which of the following most likely happens during a chemical change?No new substances are formed.Properties of a substance remain unchanged.Composition of a substance is same as before.Different atoms than before are introduced after the change.
Some one please help me on this.

Is popping popcorn a physical or chemical change? Explain your answers.

Answers

it would be a physical change because if you were to pop popcorn the popcorn would go from a kernel to a popcorn peice therfore the physical state is alterered/changed\.

Two students made the Lewis dot diagrams of NH3. The diagrams are as shown.Which student drew the correct Lewis dot diagram?

Only Student A
Only Student B
Both Student A and Student B
Neither Student A nor Student B

Answers

Answer : The correct option is, Only Student B

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, $NH_3$

As we know that nitrogen has '5' valence electrons and hydrogen has '1' valence electron.

Therefore, the total number of valence electrons in $NH_3$ = 5 + 3(1) = 8

According to Lewis-dot structure, there are 6 number of bonding electrons and 2 number of non-bonding electrons.

The Lewis dot structure of student A is wrong because there is a coordinate bond present between the nitrogen and hydrogen is not covalent.

The correct Lewis-dot structure of $NH_3$ is shown by the student B.

Answer:

niether of them

Explanation:

the rest are bs

In your own words, explain what "the more mass a substance has, the greater the object's thermal energy" means.

Answers

A larger object has more particles, thus causing greater thermal energy.

Answer:

the more heat the more particle movement i dont think mass has any thing to do with it

Explanation:

How do you measure in centimeters

Answers

Answer:

To measure centimeters, use a ruler with the side marked either cm or mm. Align the edge of the object with the first centimeter line on the ruler, then find the length in whole centimeters, or the larger numbers on the ruler

Explanation:

The hottest layer of the atmosphere

Answers

That would be the thermosphere, just above the mesosphere, and right below the exosphere.

The coefficients in the balanced chemical equation are used to determine mole ratios.Write the mole ratios found in the reaction "Making water
H2: _____0
H2;
H20
___02: _
H20

Answers

Answer:

1 mole of HCl or NaOH gives you 1 mole of H2O , then the number of moles in H2O is: [ 1÷1×1 ] = 1 mole.

Explanation:

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