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V125BC [204]
2 years ago
13

If 12 gallons of gasoline cost $34.68, what is the unit price per gallon?

Chemistry
1 answer:
chubhunter [2.5K]2 years ago
5 0
The answer is $2.89.

Since it’s asking for the unit price of one gallon and you have the total ($34.68 and 12 gallons), you would divide $34.68 from 12, which gives you $2.89.

34.68/12 = 2.89
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A buret is filled with 0.1517 M A 25.0 mL portion of an unknown acid and two drops of indicator are added to an Erlenmeyer flask
erik [133]

Answer:

Molarity of Unknown Acid = 0.1332 M

Explanation:

Data for solving problem:

Molarity of base in buret (M₁)= 0.1517 M

volume of the acid in Erlenmeyer flask (V₂)= 25.0 mL

Volume of the base in the buret (V₁) = final volume of buret - initial volume in buret

final volume of buret = 22.5 mL

initial volume in buret = 0.55 mL

So

Volume of the base in the buret (V₁) = 22.5 mL -0.55 mL = 21.95 mL

Volume of the base in the buret (V₁)  = 21.95 mL

Molarity of Unknown acid in the Erlenmeyer flask (M₂) = To be find

Explanation:

It is acid base titration and  formula for this titration is as follows:

Molarity of base x Volume of base = Molarity of acid x volume of acid

it can be written as

M₁V₁ = M₂V₂ -------------------- equation (1)

we have to find M₂

so by rearrangment the equation (1)

M₁V₁ / V₂ = M₂ ------------------ equation (2)

put the values in equation in equation (2)

M₂ = 0.1517 M x 21.95 mL / 25.0 mL

M₂ = 3.3298 /25.0

M₂ = 0.1332 M

so the Molarity of Unknown acid is <u>0.1332 M</u>

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3 years ago
Why is our mindset more important when you try to learn remotely than when you are learning face to face?
Marrrta [24]

Answer:

It is more important because of the freedom.

Explanation:

While at home you can do your work of course... but you could lay down, take a nap. You could get on the game, play around. You could draw, and fiddle and dance and do WHATEVER you want with no teacher to stop you so you have to be your own motivation. You have to be your own teacher or its VERY easy to fail.

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elena55 [62]

Answer:

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gas-to-liquid synfuel production can produce diesel, naptha and paraffin. The formation of these products usually involves _____
steposvetlana [31]
The second option is wrong

6 0
3 years ago
How many grams of lead sulfide from when 10.0 g of lead are heated with 3.0 g of sulfur
zaharov [31]

The reaction forms 11.5 g PbS.  

We have the masses of two reactants, so this is a <em>limiting reactant</em> problem.

We know that we will need a balanced equation with masses, moles, and molar masses of the compounds involved.  

<em>Step 1</em>. <em>Gather all the information</em> in one place with molar masses above the formulas and everything else below them.  

M_r:      207.2  32.06  239.28

              Pb +       S →    PbS

Mass/g: 10.0       3.0

<em>Step 2</em>. Calculate the <em>moles of each reactant  </em>

Moles of Pb  = 10.0 g Pb × (1 mol Pb /207.2 g Pb) = 0.048 26 mol Pb  

Moles of S = 30 g S × (1 mol S/32.06 g S) = 0.9357 mol S

S<em>tep 3</em>. Identify the <em>limiting reactant</em>

Calculate the moles of PbS we can obtain from each reactant.  

<em>From Pb</em>: Moles of PbS = 0.048 26 mol Pb × (1 mol PbS/1 mol Pb )

= 0.048 26 mol PbS

<em>From S</em>: Moles of S = 0.9357 mol S × (1 mol PbS/1 mol S) = 0.9357 mol PbS

<em>Pb is the limiting reactant</em> because it gives the smaller amount of PbS.

<em>Step 4</em>. Calculate the <em>mass of PbS</em>.

Mass = 0.048 26 mol PbS × (239.28 g PbS/1 mol PbS) = 11.5 g PbS

The reaction produces 11.5 g PbS.

4 0
3 years ago
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