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3 years ago

WHY is there a difference between how an electrolytes and non electrolytes affect collegiative properties?

1 answer:

4 0

<span>Colligative properties are dependent upon the number of molecules or ions present in solution. Therefore, 1 mole of Na2SO4 will produce 3 moles of ions and so it will have 3 times as much of an effect as 1 mole of sugar, which is not an electrolyte and can't dissociate to an appreciable extent.</span>

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For the following values, rank in order of increasing number of significant digits.

tatiyna

A 3 sig figs
B 6 sig figs
C 2 sig figs
D 5 sig figs

C, A, D, B

7 0

3 years ago

Sample of 76 G of NaCl is dissolved to make 1 L of a solution what is the molarity of the solution

natima [27]

Molarity = Moles/Liter

Use the molecular atomic mass of NaCl to convert from grams to moles.
Molecular mass of NaCl is the sum of its atomic masses. Look at the periodic table to find these. Na is 23 g/mol and Cl is 35.5 g/mol ,
so NaCl = 23 + 35.5 = 58.5 g/mol

multiply to cancel out grams
76 g NaCl * (1mol / 58.5 g NaCl) = 1.3 mol NaCl

over 1 Liter is just 1.3 M NaCl

6 0

3 years ago

Read 2 more answers

Determine whether the statement is true or false, and why. "If a theory becomes supported by evidence, it can become a law."

loris [4]

Answer: D. False, it should read, "A theory and a law are already both supported by evidence and are equal, but they have different functions."

Explanation:

A "Theory" and a'' Law" in scientific method are already both supported by evidence but they have different function,

The function of " Theory" in scientific method is to give an explanation to the observations and findings gathered during the process. It can be modified, improved or even rejected as more information is being gathered.

While a '' Law '' tends to describe an observed event in nature that is true whenever it is put to test. It does not explain why the occurence or event is true.

5 0

4 years ago

1. Lithium, water, edible salt, chalk, Carbon, Lime, Nitrogen, Potassium, Oxygen,

Kaylis [27]

Answer:

Explanation:

An atom is the smallest unit of an element that can take part in a chemical reaction. Atoms (and there corresponding symbols) mentioned in the question are

Lithium ⇒ Li

Carbon ⇒ C

Nitrogen ⇒ N

Potassium ⇒ K

Oxygen ⇒ O

Iron ⇒ Fe

Chlorine ⇒ Cl

A compound is substance that contains two or more atoms that are chemically combined and can be represented with a chemical formula. The compounds (and there corresponding formula) mentioned in the question are

Water ⇒ H₂O

Edible salt (sodium chloride) ⇒ NaCl

Chalk (calcium carbonate) ⇒ CaCO₃

Lime (calcium oxide) ⇒ CaO

Iodides (such as sodium iodide and potassium iodide) ⇒ NaI and KI respectively

8 0

3 years ago

Which has a higher concentration of water molecules— 200 molecules of water, or a mixture of 300 molecules of water and 100 mole

Dovator [93]

<h3>Answer:</h3>

200 molecules of water has the highest concentration.

<h3>Explanation:</h3>

In chemistry, Concentration is defined as the amount of substance divided by the total volume of the constituents making the mixture.

<u>Case 1:</u> 200 Molecules of Water:

In this case we are having system which is made up of 200 purely water molecules and there is no other substance present in the system. Hence, for ease we can write it as,

Concentration = Molecules of Water ÷ Total Molecules of Mixture

Concentration = 200 ÷ 200

Concentration = 1

<u>Case 2:</u> 300 Molecules of Water and 100 Molecules of Food Coloring:

In this case we are having a mixture which is made up of 300 water molecules and 200 food coloring molecules. Hence, we can write it as,

Concentration = Molecules of Water ÷ Total Molecules of Mixture

Concentration = 300 ÷ (300 + 200)

Concentration = 300 ÷ 500

Concentration = 0.6

Therefore, it is proved that the concentration of pure 200 molecules of water is greater.

7 0

4 years ago