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yulyashka [42]
3 years ago
10

Which is an example of convection?

Chemistry
1 answer:
mixas84 [53]3 years ago
4 0

Answer:

it is C

Explanation:

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Whats does x stand for?
Furkat [3]

x is the chemical symbol of the element and it must correspond to the atomic number

4 0
2 years ago
How much ch2o is needed to prepare 445 ml of a 2.65 m solution of ch2o?
worty [1.4K]

Answer: 35.4 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

Molality = 2.65

n= moles of solute =?

 V_s = volume of solution in ml = 445 ml

Putting in the values we get:

2.65=\frac{n\times 1000}{445ml}

n=1.18

Mass of solute in g=moles\times {\text {molar mass}}=1.18mol\times 30.02g/mol=35.4g

Thus 35.4 grams of CH_2O is needed to prepare 445 ml of a 2.65 m solution of CH_2O.

8 0
3 years ago
Which is an example of a chemical reaction
valkas [14]

Answer:iron and oxygen combining to make rust. vinegar and baking soda combining to make sodium acetate, carbon dioxide and water

Explanation:

7 0
3 years ago
The conversion of co2 and h2o into organic compounds using energy from light is called
galben [10]
Photosynthesis
Hope this helps!
5 0
3 years ago
Is ineffective collision's the answer? Please correct me if not, thank you. :)
AleksAgata [21]
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