Chemistry, 19.01.2020 23:31 icantspeakengles

Sam prepares a solution of sodium chloride with a concentration of 8 g/dm³. if he only used 2g of sodium chloride, what volume of water did he dissolve it in, in cm³?

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Answer from: joedawg50

The volume of water for 2 g sodium chloride with concentration of $\rm 8g/dm^3$ has been $\rm \bold{250\;cm^3}$ .

Concentration has been defined as the mass of solute with respect to the solution. The concentration has been expressed in various ways such as density, molarity, molality, etc.

The concentration of given solution has been $\rm 8g/dm^3$ . It has been stating that 8 gram of sample has been present in 1 cubic decimeter solution.

Volume of water

The volume of water has been obtained for 2 gram of sodium chloride solution as:

$\rm 8\;g=1\;dm^3\\2\;g=\dfrac{1}{8}\;\times\;2\;dm^3\\2\;g=0.25\;dm^3$

The volume of water for 2 g of solution has been 0.25 cubic decimeter.

The decimeter cube has been given as in terms of cubic centimeter as:

$\rm 1\;dm^3=1000\;cm^3\\0.25\;dm^3=0.25\;\times\;1000\;cm^3\\0.25\;dm^3=250\;cm^3$

The volume of water for 2 g sodium chloride with concentration of $\rm 8g/dm^3$ has been $\rm \bold{250\;cm^3}$ .

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Answer from: redrhino27501

The volume of water he dissolved the solute is 250 cubic centimeter.

Explanation:

Concentration = mass of solute in g / volume in dm^3

The concentration of a solution is defined as the ratio of mass of solute in grams to the volume of water in dm^3.

If concentration of a solution = 8 g/dm^3.

mass of solute =2 g.

Volume of a water = 2 / 8 = 0.25 dm^3. (or) 250 cubic centimeter.

Answer from: Quest

Idkat all because idhducheh

Answer from: Quest

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

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Sam prepares a solution of sodium chloride with a concentration of 8 g/dm³. if he only used 2g of so...

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