Which of these atoms are electrically neutral?

Answers

Answer 1

Answer:

Atoms are electrically neutral because they contain equal quantities of positively charged protons and negatively charged electrons. Electrons and protons have equal but opposite charges, so the result is no net charge. Ions are atoms that have gained or lost electrons.

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The concentration of a solution can be expressed in(I ) milliliters per minute
(2) parts per million
(3) grams per Kelvin
(4) joules per gram

Answers

Answer:

(2) parts per million

Explanation:

Concentration of a solution can be expressed in terms of parts-per-million (ppm).

ppm is usually used in the context of measuring very small concentrations particularly the amount of contaminants. It represents 1 part of the contaminant in 100000 parts of the total.

It is expressed as:

1 ppm = 1 mg / L

1 ppm = 1 mg/ Kg

(I ) milliliters per minute
(2) parts per million
(3) grams per Kelvin
(4) joules per gram

What happens to the motion between water molecules when liquid water transforms to a solid?Hydrogen bonds are broken.

Atoms in the liquid water move more slowly.

Atoms in the liquid water move more quickly.

More hydrogen bonds form between the molecules.

Answers

When liquid is in a solid the atoms move slower because their is less room and atoms in a liquid move faster
Hope this helped

Final answer:

When water changes from a liquid to a solid, the atoms move slower and form more hydrogen bonds, giving ice its solid structure.

Explanation:

When liquid water transforms to a solid state (i.e. ice), the motion between water molecules changes. Hydrogen bonds are actually formed, not broken. Because of the decrease in temperature, atoms in the liquid water start to move more slowly, not quickly. This slower movement allows for more hydrogen bonds to form between the water molecules, which is what essentially gives ice its solid structure.

Learn more about State Change of Water here:

brainly.com/question/32046724

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What happens when a mechanical wave travels through medium

Answers

energy is transferred

The molecule of the medium vibrates at the dedication in which the wave travels

Can you help me with acrostic poem?

Answers

An acrostic poem is a type of poetry where the first, last or other letters in a line spell out a particular word or phrase.

Organelle? 3 types of organnelles?

Answers

Hey there, 3 types of organelles are Rough Endoplasmic Reticulum, Smooth Endoplasmic Reticulum, and Mitochondria. The Rough Endoplasmic Reticulum it's density is higher near the nucles. The Smooth Endoplasmic Reticulum is an organelle that's in an animal cell and plant cells. The Mitochondria is an organelle that is found in large numbers in most cells.

Which solution has the greater concentration?A. 0.500 mole LiCl dissolved in 250 ml solution

B. 0.250 mole LiCl dissolved in 250 ml of solution

C. Both the same

Answers

The higher concentrated solution is 0.250 mole LiCl dissolved in 250 ml of solution

( B).0.250mole of LiCl diluted in 250ml solution

Explanation:

Procedure to find the intensity of the solution:

To find the intensity of the solution, we have to use the following formula

M1V1=M2V2

250mL of a 0.500 M aqueous solution of LiCl is diluted with water

$M1V1=(250) * (0.500)=125M$

250 ml of a 0.250M aqueous solution of LiCl is diluted with water

$M2V2=(250) * (0.250)=62.5M$

Thus the PH level of a solution increases from ascending order, Therefore the Solution with 62.5M is a higher concentration than that of the solution with 125M.