CHEMISTRY HIGH SCHOOL

Metric unit capacity

Answers

Answer 1
Answer: Capacity is the amount a container can hold. The milliliter (mL) is a metric unit used to measure the capacities of small containers. The liter (L) is equal to 1,000 mL, so it is used to measure the capacities of larger containers

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MIDDLE SCHOOL

Dilutions Worksheet - Solutions If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the
molarity of the diluted solution be?
(0.75 M)(250 ml) = M2 (295 mL)
M2 = (0.75 M) (250 mL) = 0.64 M
(295 mL)


Where did the 295ml came from ????

Answers

Answer:

Explanation:

The original solution was diluted from 250 mL to 295 mL

We can use the dilution formula to calculate the concentration of the diluted solution.

The amount of material in a particular volume of the solution is measured in molarity that describes as the mole number of solute in 1 liter of solution that is referred to as molarity.

Its original solutions were reduced in volume from 250 mL to 295 mL. You could use the dilution method to calculate the quantity of the solution.

Given:

To find:

Solution:

Using formula:

Apply value into the formula:

   

Therefore, the final answer is "0.64 mol/L".

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MIDDLE SCHOOL

Name at least 4 other gases in the atmosphere besides oxygen and nitrogen

Answers

HELIUM
KRYPTON
CARBON DIOXIDE
HYDROGEN
Argon,Carbon dioxide,Neon,Helium, and Methane
HIGH SCHOOL

Which of the following mixture types can be filtered to remove solute? (1 point) suspensions only colloids only suspensions and colloids suspensions and solutions

Answers

The correct answer is suspensions only. The suspension is a heterogeneous mixture that contains solid particles that are largely enough to undergo sedimentation. Usually, these particles are about one micrometer which makes these solute to be very easy to be free from their solvent and be filtered.

The answer to your question is

suspensions only

HIGH SCHOOL

Why do comets have tails

Answers

Answer:

Comets are composed of ice, dust and frozen gases. The core of the comet is known as nucleus which is formed of rocks and frozen gases. Coma is the atmosphere of the comet. As the comet enters the inner solar system, the coma expands due to sublimation of frozen gases. As it nears the sun, the coma extends backwards and forms a long tail. It extends backwards due to the solar wind. The charged particles from the sun take away the evaporated material and dust of the comet backwards forming tail.

As a comet approaches the Sun, it starts to heat up. The ice transforms directly from a solid to a vapor, releasing the dust particles embedded inside. Sunlight and the stream of charged particles flowing from the Sun – the solar wind – sweeps the evaporated material and dust back in a long tail.

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