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topjm [15]
3 years ago
10

Which is an unreliable source?

Chemistry
1 answer:
lesya [120]3 years ago
6 0

Answer:

An unrealiable source is a place of of information that is not always factual.

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The Solvay process is a multistep industrial process used to produce washing soda, Na2CO3(s). In the last step of the Solvay pro
olganol [36]
Its IUPAC name is sodium carbonate. It is also known as soda ash. It is the water soluble sodium salt of carbonic acid and occurs as a crystalline heptahydrate. Sodium carbonate has an alkaline taste and when in solution forms a basic solution. One important application is that it is used commonly as a water softener.
6 0
3 years ago
Doreen Schmidt is a chemist. She needs to prepare 28 ounces of a 12​% hydrochloric acid solution. Find the amount of 14​% soluti
Tpy6a [65]

Answer:

20 ounces of 14% solution and 8 ounces of 7% solution.

Explanation:

Let the amount of 14% solution required be A and the amount of 7% solution required be B.

Mixture of A and B must give 28 ounces:

A + B = 28 ................. Eqn 1

Also, mixture of 14% A and 7% B must give 12%, 28 ounces solution:

0.14A + 0.07B = 0.12(28) = 3.36...................Eqn 2

From eqn 1, B = 28 - A, eqn 2 becomes:

0.14A + 0.07(28 - A) = 3.36

0.07A = 3.36 - 1.96

A = 20 ounces

Substitute the value of A into eqn 1 to get B:

20 + B = 28

B = 8 ounces.

Hence, 20 ounces of 14% hydrochloric acid and 8 ounces of 7% hydrochoric acid should be mixed together in order to get 28 ounces of 12% solution.

8 0
3 years ago
Help me with this question please like right now
denis23 [38]

Using the gas laws, the volume of nitrogen produced is 6.6 L.

<h3>What is the product of a reaction?</h3>

We know that the product of a reaction is obtained from the balanced reaction equation. The reactants combine together to yield the products hence we have; N2 + 3H2 ----> 2NH3

We know that 1 mole of hydrogen occupies 22.4 L

x moles of hydrogen occupies 25500 L

x = 1 mole * 25500 L/ 22.4 L

x = 1138.4 moles

If 3 mole of hydrogen reacts with 1 mole of nitrogen

1138.4 moles  reacts with 1138.4 moles * 1 mole/ 3 moles = 379.5 moles

Mass of nitrogen = 379.5 moles * 28 g/mol = 10626 g

Now 3 moles of hydrogen produces 44.8 L of NH3

1138.4 moles  produces 1138.4 moles * 44.8 L/ 3 moles = 17000 L

Now;

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

V2 = P1V1T2/P2T1

V2 = 1 * 17000 * 848/5.5 * 273

V2 =9601 L

2) 2NH4NNO3(s) ---> 4H2O(g) + 2N2(g) + O2(g)

Number of moles = 12g/ 80 g/mol = 0.15 moles

Now;

2 moles of NH4NNO3 produced 2 moles of nitrogen hence 0.15 moles of N2 was produced.

1 mole of N2 occupies 22.4 L

0.15 moles of N2 occupies 0.15 moles  *  22.4 L/1 mole = 3.36 L

P1 = 760 torr

V1 = 3.36 L

T1 = 273 K

P2 = 745 torr

T2 = 527 degrees or 800 K

V2 = ?

V2 =  P1V1T2/P2T1

V2 =  760 *  3.36 * 527/745 * 273

V2 = 6.6 L

Learn more about gas laws:brainly.com/question/12669509

#SPJ1

3 0
2 years ago
What is the best description of a molecule?
finlep [7]

Answer:

Three or more atoms bonded together

Explanation:

A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds

7 0
3 years ago
Using the tools and knowledge of science to solve a problem or build new technology is called...
kaheart [24]

Answer:

Invention

Explanation:

Scientific ideas can be applied in novel was to solve new scientific problems and create new technology. This process helps to make life easier and better.

The application of scientific knowledge to solve new problems and create new technology is generally referred to as invention.

5 0
4 years ago
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