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frez [133]
3 years ago
6

Name the two criteria that is used to determine if a substance is pure or not​

Chemistry
1 answer:
meriva3 years ago
3 0

Answer:

Melting and Boiling Point Determination

The physical properties of a substance can be used to establish its purity. These properties include the melting point and boiling point. Different substances tend to have different melting and boiling points, and any pure substance will have a specific melting and boiling point.

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An object has a density of 16.3 g/mL and a volume of 0.46 L. Calculate the
deff fn [24]

Answer:

16.53 pounds

Explanation:

this type of problem needs convertion method we need to convert from grams to pound.

3 0
3 years ago
Changing from liquid to gas is a chemical change.<br> True<br> False
Korolek [52]

Answer:

This is False

Explanation:

A chemical change is when the matter is completely changed.

When you have water and boil it to be a gas, it is still the same matter, just in a different form.

I hope this helps :)

6 0
3 years ago
Read 2 more answers
15.50 g of NH4Cl reacts with an excess of AgNO3. In the reaction 35.50 g AgCl is produced. what is the theoretical yield of AgCl
Readme [11.4K]

Answer:

The answer to your question is 41.6 g of AgCl

Explanation:

Data

mass of NH₄Cl = 15.5 g

mass of AgNO₃ = excess

mass of AgCl = 35.5 g

theoretical yield = ?

Process

1.- Write the balanced chemical reaction.

              NH₄Cl  +  AgNO₃   ⇒   AgCl  +  NH₄NO₃

2.- Calculate the molar mass of NH₄Cl and AgCl

NH₄Cl = 14 + 4 + 35.5 = 53.5 g

AgCl = 108 + 35.5 = 143.5 g

3.- Calculate the theoretical yield

                 53.5 g of NH₄Cl -------------------- 143.5 g of AgCl

                  15.5 g of NH₄Cl  -------------------    x

                         x = (15.5 x 143.5) / 53.5

                         x = 2224.25 / 53.5

                         x = 41.6 g of AgCl

8 0
3 years ago
What is “the process in which electrons are rearranged without direct contact”???
Anastasy [175]

Answer:

Induction

Explanation:

When a body is brought in contact with another, electrons are rearranged by contact.

When a body is rubbed against one another, charging by friction occurs.

The process whereby electrons are rearranged without direct contact with one another is called induction.

By induction electrons can get charged without them having to be in contact with one another.

  • When a charged body is brought to the vicinity of the electrons, either an attraction or repulsion force is set up.
  • Similar charges causes repulsion
  • If a negatively charged body is brought near the electrons, there would be heavy repulsion and the electrons would be forced to rearranged.
  • This effect is product as a result of a force field.
7 0
3 years ago
Which of these is NOT a mixture?
TEA [102]
The correct answer would b C
7 0
3 years ago
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