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3 years ago

1. A solution is a mixture. The part of the solution in the greater amount is called the

Chemistry

1 answer:

olga_2 [115]3 years ago

5 0

Answer:

Solvent

Explanation:

Many people use the solute to describe the solid being dissolved and the solvent to describe the thing doing the dissolving, but really solvent means the part of the solution with a greater amount/concentration.

For example, if you have 1 gram of salt in 10 liters of water, the water is the solvent.

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What process measures the amount of a solution of known concentration required to react with a measured amount of a solution of

Savatey [412]

The answer is titration.

hope this helped :)

7 0

3 years ago

What do you have to do to change an atom labeled + ion or - ion into a neutral atom?

avanturin [10]

Answer:

to change an atom labeled + ion or -ion into a neutral atom, an electron is either added or removed from it

8 0

3 years ago

Calculate [H3O+] and [OH−] for each of the following solutions at 25 ∘C given the pH.<br> pH= 2.89

dimaraw [331]

Answer: The value of $[H_{3}O^{+}]$ is 0.0012 M and $[OH^{-}]$ is $1.02 \times 10^{-14}$ .

Explanation:

pH is the negative logarithm of concentration of hydrogen ion.

It is given that pH is 2.89. So, the value of concentration of hydrogen ions is calculated as follows.

$pH = - log [H^{+}]\\2.89 = - log [H^{+}]\\conc. H^{+} = 0.0012 M$

The relation between pH and pOH value is as follows.

pH + pOH = 14

0.0012 + pOH = 14

pOH = 14 - 0.0012 = 13.99

Now, pOH is the negative logarithm of concentration of hydroxide ions.

Hence, $[OH^{-}]$ is calculated as follows.

$pOH = - log [OH^{-}]\\13.99 = - log [OH^{-}]\\conc. OH^{-} = 1.02 \times 10^{-14} M$

Thus, we can conclude that the value of $[H_{3}O^{+}]$ is 0.0012 M and $[OH^{-}]$ is $1.02 \times 10^{-14}$ .

6 0

3 years ago

PLEASE HELP ME!!!! WILL GIVE BRAINLIEST!!!!

vitfil [10]

Answer: 1. 3.23 m

2. 32.4

3. B adding solvent and C removing solute

Explanation:

1. Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent

$Molality=\frac{n}{W_s}$

where,

n = moles of solute

$W_s$ = weight of solvent

Now put all the given values in the formula of molality, we get

$Molality=\frac{43.6mol}{13.5kg}=3.23mol/kg$

2. Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{n}{V_s}$

where,

n = moles of solute

$V_s$ = volume of solution in L

$3.4=\frac{n}{9.54}$

$n=32.4$

Therefore, the moles of $Na_2CO_3$ is 32.4

3. Molarity can be decreased by decreasing the moles of solute and by increasing the volume of solution.

Thus adding solvent and removing solute will decrease the molarity.

4 0

3 years ago

Desalination is the process of converting sea water into drinking water. Older processes used a desalination method to desalinat

Kay [80]

Answer:

From the diagram, the water is being boiled. This process vaporises the water in the vessel leaving salt crystals behind.

Since the water is needed in liquid form, the cold water at the top of the set-up

condenses the vapor so it can be used.

3 0

4 years ago

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