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Aleks04 [339]
3 years ago
5

Ocean water Choose one: A. is less dense than freshwater. B. salinity decreases as seawater evaporates. C. contains dissolved sa

lts, like halite and gypsum. D. has an average salinity of 35%.
Chemistry
1 answer:
Genrish500 [490]3 years ago
8 0

Answer: the answer is C

Explanation:

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In pair NaF and H2O both compounds exibit predominantly ionic bonding.

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The change of state from a gas to a liquid is called?
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<span>This change is called BOILING.</span>
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First twenty element with electronic configuration​
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8 Oxygen (O) [He] 2s2 2p4
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3 0
2 years ago
How many moles of O2 should be supplied to burn 1 mol of C3H8 (propane) molecules in a camping stove
Shkiper50 [21]
The combustion of any hydrocarbon yields water and carbon dioxide. We will now construct a balanced equation:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Each mole of propane requires 5 moles of oxygen.
4 0
3 years ago
If 7.0 mol of NO and 5.0 mol of O2 are reacted tegethor. The reaction generates 3.0 mol of NO2. What is the percent yield for th
Nata [24]

Answer:

The answer to your question is: 43 %

Explanation:

Data

NO = 7 mol

O2 = 5 mol

NO2 = 3 mol

percent yield = ?

Reaction

                             2NO(g)    +   O2(g)  ⇒    2NO2(g)      

Proportion of reactants

From the reaction             2 moles of NO / 1 moles of O2 = 2

From the experiment        7 moles of NO / 5 moles of O2 = 1.4

Then, the limiting reactant is NO.

Rule of three

                            2 moles of NO -------------- 2 moles of NO2

                            7 moles of NO --------------   x

                            x = (7 x 2) / 2

                            x = 7 moles of NO2

% yield = experimental/ theoretical x 100

% yield = 3/7 x 100

% yield = 42.9 ≈ 43                                                    

                         

8 0
3 years ago
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