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Bad White [126]
4 years ago
7

Please help with this!

Chemistry
1 answer:
dem82 [27]4 years ago
6 0

Answer:

2334.334

Explanation:

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Karo-lina-s [1.5K]

Answer: I believe its 1

Hope this helps!

4 0
2 years ago
True or false cells are the building blocks of life on earth
Rzqust [24]
That statement is true.

Reason: If you are familiar with the cell theory, the cell theory states 3 things:

- All living things are made up of cells
- Cells are the basic unit of life
- Cell comes from other cells


Any living things are made up of cells- which is why cells are considered the building blocks of life on Earth.


Hope this helps!! :)

6 0
3 years ago
Read 2 more answers
a student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this change the percentage of NaCl extr
Anit [1.1K]
It will be extracted only 1/3 of NaCl less in 10 mL of water than in 30 mL of water.

If it is known that solubility of NaCl is 360 g/L, let's find out how many NaCl is in 30 mL of water:

360 g : 1 L = x g : 30 mL

Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = <span>x g : 30 mL

Now, crossing the products:
x </span>· 1,000 mL = 360 g · 30 mL
x · 1,000 mL = 10,800 g mL
x = 10,800 g ÷ 1,000 
x = 10.8 g

So, from 30 mL mixture, 10.8 g of NaCl could be extracted.

Let's calculate the same for 10 mL water instead of 30 mL.

360 g : 1 L = x g : 10 mL

Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = <span>x g : 10 mL

Now, crossing the products:
x </span>· 1,000 mL = 360 g · 10 mL
x · 1,000 mL = 3,600 g mL
x = 3,600 g ÷ 1,000 
<span>x = 3.6 g
</span>
<span>So, from 10 mL mixture, 3.6 g of NaCl could be extracted.
</span>
Now, let's compare:
If from 30 mL mixture, 10.8 g of NaCl could be extracted and <span>from 10 mL mixture, 3.6 g of NaCl could be extracted, the ratio is:
</span>3.6/10.8 = 1/3

Therefore, i<span>t will be extracted only 1/3 of NaCl less in 10 mL of water than in 30 mL of water. </span>
5 0
3 years ago
Which temperatures originally represented the fixed points<br> Celsius temperature scale?
frez [133]

Answer:Since 1743 the Celsius scale has been based on 0 °C for the freezing point of water and 100 °C for the boiling point of water at 1 atm pressure. Prior to 1743 the values were reversed (i.e. the boiling point was 0 degrees and the freezing point was 100 degrees).

Explanation: i no it

8 0
3 years ago
The mountain peaks shown below were initially formed millions of years ago through the processes of folding, faulting, and overt
algol [13]

Answer:

A. Erosion  

Explanation:

Erosion is the process in which soil and rock are worn away and transported by wind or water and transported to another location.

The image below shows how water has eroded a coastline.

B is wrong. Chemical weathering is the disintegration of rocks by reactions with water and the acids dissolved in it

C is wrong. Deposition is the process in which sediments carried by wind, water or ice are deposited at another location.

D is wrong. Physical weathering is the breakdown of rocks and soil by physical processes like the freezing of ice in the cracks of rocks.

6 0
3 years ago
Read 2 more answers
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