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Liula [17]
3 years ago
12

4. Which of the following is NOT a pure substance? (1 point)

Chemistry
1 answer:
BaLLatris [955]3 years ago
3 0
Milk is not a pure substance, it's a mixture. Pure substances are either elements or compounds.
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How to solve 5gNaCl= MolE NaCl
valentinak56 [21]

0.086mole

Explanation:

The problem is very simple. It involves conversion from mass to number of moles of NaCl

What is mole?

 A mole is a unit of measuring chemical substances. It is the amount that contains the avogadro's number of particles.

How is it related and can be converted from mass;

 

Number of moles of a substance = \frac{mass}{molar mass}

Since we know the mass, we can find the molar mass and put into this equation;

Molar mass of NaCl = 23 + 35.5 = 58.5g/mol

Number of moles of NaCl = \frac{5}{58.5}  = 0.086mole

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

4 0
3 years ago
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3 years ago
Which statement describes a problem with the peer review process in scientific research?
Snezhnost [94]
Its A.It can sometimes reject important new ideas or novel techniques.<span>
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6 0
4 years ago
16.H2O (water) and NaCl (salt) are _________ that are in salt water, which is a(n) __________. Water and salt contain the ______
trapecia [35]
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What is Electrolysis method?​
timofeeve [1]

Answer:

Process by which electric current is passed through a substance to effect a chemical change.

Explanation:

Hope this helps and have a blessed day.

7 0
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