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kap26 [50]
3 years ago
10

What is the molarity of a solution that contains 9.63 grams of HCI in 1.5 liters of solution

Chemistry
1 answer:
yan [13]3 years ago
5 0

n = m/M = 9.63 / 36.458 = 0.2641 moles

c = n/V = n / 1.5 = 0.18 moles/dm3

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How many grams of H2 are needed to react with 47 grams of N2 to produce 200 grams of NH3?
Oduvanchick [21]
I think it’s law conservation of mass.

So 200g(NH3)-47g(N2)=153g(H2)

H2+N2—->NH3
5 0
4 years ago
What percent of I-125 has decayed if there are 37.5g of the original sample left?
garri49 [273]

Answer:

[(x-37.5)/x]*100%

62.5%  (assuming the original sample weighs 100.0g)

Explanation:

Let's say that the original sample is x

Mass of I-125 which has decayed: x-37.5

Percentage of decayed mass: [(x-37.5)/x]*100%

Please recheck, for this may not be the correct answer

6 0
3 years ago
Consider the Van der Vaals equation of state: (????+????????????)(????−????)=???????????? where p is pressure, V is volume, n is
yanalaym [24]

Answer:

Units of a = \frac{atm\ L^2}{mol^2}

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Explanation:

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Where,

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value

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If pressure is taken in atm and volume in L. So,

P+\frac{an^2}{V^2} represents the pressure correction term. Then,

Units of a = \frac{atm\ L^2}{mol^2}

V-nb represents the volume correction term. Then,

Units of b = \frac{L}{mol}

6 0
3 years ago
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Lynna [10]

Answer:

Valence electrons. they can be used to determine the group of an element.

Explanation:

6 0
3 years ago
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icang [17]

Explanation:

step 1. an inequality has either a <, <=, >=, or a >.

step 2. 1 < 4 is an inequality.

step 3. the answer is A.

4 0
3 years ago
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