3 years ago

PLEASE ANSWER QUICKLY ASAP READ QUESTIONS CAREFULLY

Chemistry

2 answers:

vladimir1956 [14]3 years ago

6 0

49/5 that should be

Advocard [28]3 years ago

5 0

Answer:

45/9 or 5

Explanation:

the oil which relative amount is greater than demand is fuel oil, whose fraction is 45/9

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emmainna [20.7K]

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4 years ago

In a solution with a pH of 4, the [OH-] is: 1x 10-10 1x 10-4 10 - 1x 10-8

e-lub [12.9K]

Answer:

1 x 10^-4

Explanation:

Use the equation pH = -log[OH-}

Rearranging it [OH-] = 10^-pH

Plugging in we get [OH-] = 1 x 10^-4

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4 years ago

Can you think of any practical reasons why you might want to know if there is carbon dioxide in air mixtures? please help

san4es73 [151]

Yes. carbon dioxide is deadly and i want to get away from it fast.

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3 years ago

What is the molarity of a solution that contains 1000.0 mg of AgNO3 that has been dissolved in 500 mL of water

Vaselesa [24]

0.012moldm⁻³

Explanation:

Given parameters:

Mass of AgNO₃ = 1000mg

Volume of water = 500mL

Unknown:

Molarity of solution = ?

Solution:

The molarity of a solution is the number of moles of a solute dissolved in volume of solvent.

Molarity = $\frac{xnumber of moles}{Volume}$

Number of moles of AgNO₃ = ?

Number of moles = $\frac{mass}{molar mass}$

Molar mass of AgNO₃ = 108 + 14 + 3(16) = 170g/mol

convert mass to g;

1000mg = 1g

Number of moles = $\frac{1}{170}$ = 0.00588moles

convert the given volume to dm³;

1000mL = 1dm³;

500mL = 0.5dm³

Now solve;

Molarity = $\frac{0.00588}{0.5}$ = 0.012moldm⁻³

learn more:

Molarity brainly.com/question/9324116

#learnwithBrainly

4 0

3 years ago

Please help me #6!!!!!!!!

Vesnalui [34]

I believe that the answer is 12 because there is already 3 O molecules and since its in parentheses with 3 outside it that means that there are 3 of those CO molecules meaning that for every 1 CO there will be 3 O’s so 3, four times Is 12

3 0

3 years ago

PLEASE ANSWER QUICKLY ASAP READ QUESTIONS CAREFULLY ​

PLEASE ANSWER QUICKLY ASAP READ QUESTIONS CAREFULLY