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Lera25 [3.4K]
3 years ago
14

Are there any steps of the rock cycle that do NOT connect directly to one another? Explain why this may be the case using at lea

st two examples.
please helpp
Chemistry
1 answer:
docker41 [41]3 years ago
7 0

Answer:

rocks are destroyed

explanation

ricks are never destroyed they descompose

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How many molecules are in 12.5g of water (H2O)?
Katyanochek1 [597]

Answer:

.694 moles

Explanation: do given over one so 12.5 over 1 then multiply that by 1 over 18.01528( atomic mass of water) and then you get ans answear that you sig fig but i did that for you

7 0
3 years ago
Solve the problem. Express your answer to the correct number of significant figures
Shalnov [3]

Answer:

Explanation:

30.53131

4 0
3 years ago
typical seawarer contains 2.7g of salt (sodium chloride,Nacl)per 100ml (100*10-3L).what is the molarity of Nacl in the ocean?​
faust18 [17]

Answer:

Molarity = 0.5 M

Explanation:

Given data:

Mass of NaCl = 2.7 g

Volume = 100 mL(100×10⁻³L)

Molarity of solution = ?

Solution:

Formula:

Molarity = number of moles / volume in litter

Number of moles:

Number of moles = mass/ molar mass

Number of moles = 2.7 g/ 58.5 g/mol

Number of moles = 0.05 mol

Molarity = number of moles / volume in litte

Molarity = 0.05 mol / 100×10⁻³L

Molarity = 0.5 M

4 0
3 years ago
12
VARVARA [1.3K]

Answer:

B

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5 0
2 years ago
Balance the equation
kap26 [50]

Answer: Balanced chemical equation will be :

5SiO_2+2CaC_2\rightarrow 5Si+2CaO+4CO_2

Explanation:

SiO_2+CaC_2\rightarrow Si+CaO+CO_2(Unbalanced)

A  balanced chemical reaction follows the Law of Conservation of Mass. which states in a chemical reaction mass can neither be created nor be destroyed. In other words total mass of the products is equal to the total mass of reactants.

Balanced chemical equation will be :

5SiO_2+2CaC_2\rightarrow 5Si+2CaO+4CO_2

3 0
3 years ago
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