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Lunna [17]
3 years ago
13

How many hours are in 25 years?

Chemistry
2 answers:
Rzqust [24]3 years ago
7 0

<em>t</em><em>h</em><em>e</em><em>r</em><em>e</em><em> </em><em>are</em><em> </em><em>219000 hours</em><em> </em><em>in</em><em> </em><em>25</em><em> </em><em>years</em><em>.</em><em /><em>✌</em><em />

Annette [7]3 years ago
6 0
There are *219,000* hours in 25 years
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What is the molarity of a solution containing 56 grams of solute in 959 ml of solution? (molar mass of solute = 26 g/mol)?
jolli1 [7]
26g --- 1 mol
56g --- X
X= 56/26 = 2,154 mol

959 ml = 959cm³ = 0,959dm³

C = n/V
C = 2,154/0,959
C = 2,246 mol/dm³
8 0
3 years ago
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K2SO4 (aq) + NaOH (aq)
murzikaleks [220]

Answer:

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3 years ago
A solution contains 72.0 g of HCI and 468 g of (C6H6). what is the mole fraction of benzene
erica [24]
<span>Molar mass (MM) of benzene C6H6
C = 6 * 12 = 72u
H = 6 * 1 = 6u
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Of A Mix has 468 g -------------- x

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CI = 1 * 35 = 35u
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Of A Mix has 72 g ------------ y

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Dividing One Mole Amount of Each Substance by the Number of Total Mole Amounts, Then we will obtain a Molar Fraction of Each:
Molar fraction make benzene = (6/8) simplify 2 = 3/4
Molar Fraction to make Hydrochloric Acid = (2/8) = simplify 2 = 1/4

Note:. The sum of the molar fractions of the always give goes 1, we have: 3/4 + 1/4 = 1
 

ANSWER: 
</span>\boxed{\frac{3}{4}}
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3 years ago
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