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juin [17]
3 years ago
14

What are three applications of thecoal ​

Chemistry
1 answer:
labwork [276]3 years ago
3 0

Three uses of coal:

1. Electricity generation

2. Steel production

3. Cement manufacturing and as a liquid fuel

Hope it helps!

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Five hundred (500) milliliters of sodium chloride 0.9% is prescribed to be given over 4 hours using a volumetric pump. What's th
Angelina_Jolie [31]

<u>Given:</u>

Volume of 0.9% NaCl = 500 ml

Time (t) = 4 hrs

<u>To determine:</u>

The infusion rate of NaCl in ml/hr

<u>Explanation:</u>

Based on the information- 500 ml of NaCl is to be given over a time span of 4 hrs

Hence, the volume of NaCl to be administered per hr is:-

= 1 hr * 500 ml/4 hr = 125 ml

Ans: Infusion rate = 125 ml/hr

6 0
4 years ago
Zinc reacts with hydrochloric acid according to the reaction equation Zn ( s ) + 2 HCl ( aq ) ⟶ ZnCl 2 ( aq ) + H 2 ( g ) How ma
Katen [24]

Answer: 12.0 milliliters of 6.50 M HCl ( aq ) are required to react with 2.55 g Zn.

Explanation:

moles =\frac{\text {given mass}}{\text {Molar mass}}

moles of zinc =\frac{2.55g}{65.38g/mol}=0.0390moles

The balanced chemical equation is :

Zn(s)+2HCl(aq)\rightarrow ZnCl_2(aq)+H_2(g)

According to stoichiometry:

1 mole of zinc reacts with = 2 moles of HCl

Thus 0.0390 moles of zinc reacts with = \frac{2}{1}\times 0.0390=0.0780 moles of HCl

To calculate the volume for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution in ml}}     .....(1)

Molarity of HCl solution = 6.50 M

Volume of solution = ?

Putting values in equation 1, we get:

6.50M=\frac{0.0780\times 1000}{\text{Volume of solution in ml}}

{\text{Volume of solution in ml}}=12.0ml

Thus 12.0 ml of 6.50 M HCl ( aq ) are required to react with 2.55 g Zn

3 0
3 years ago
What causes the jet stream? (4 points)
mamaluj [8]
The answer is A. 

Hope this helps, 

kwrob
7 0
4 years ago
What are the difference between an animal cell and plant cell
Bingel [31]

Answer:

ANIMAL CELL

Animal cells are generally small in size.

They don't have a cell wall

Except the protozoan Euglena, no animal cell possesses plastids.

Vacuoles in animal cells are many, small and temporary.

Animal cells have a single highly complex and prominent Golgi apparatus.

Animal cells have centrosome and centrioles.

PLANT CELL

Plant cells are larger than animal cells.

The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose.

They have Plastids

Most mature plant cells have a permanent and large central sap vacuole.

Plant cells have many simpler units of Golgi apparatus, called dictyosomes.

Plant cells lack centrosome and centrioles.

Hope this helps!

5 0
3 years ago
Read 2 more answers
A Rectangular Prism has a height of 4cm, a width of 5cm, a length of 1.2 cm, and a mass of 85,000 g. What is it's density?
wolverine [178]

Answer:

The answer is D.

Explanation:

Volume (V) = l x w x h

V = 4 x 5 x 1.2

V = 20 x 1.2

V = 24

Density = Mass/Volume  or D = M/V  

D = 85,000/24

D = 3541.66666666

4 0
3 years ago
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