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Elden [556K]
2 years ago
11

A flask with a volume of 250.0 mL contains air with a density of 1.164 g/L. What is the mass of the air contained in the flask?

Chemistry
1 answer:
satela [25.4K]2 years ago
6 0

Answer:

convert 250.0 mL in Liters :250. 0 / 1000 = 0,25 LDensity = 1.240 g/LMass

Explanation:

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What is Δn for the following equation in relating Kc to Kp?<br> 2 SO2(g) + O2(g) ⇌ 2 SO3(g)
swat32

Answer:

Δ N = -1

Explanation:

Step 1: Data given

2 SO2(g) + O2(g) ⇌ 2 SO3(g)

For 2 moles of SO2 we need 1 mol of O2 to produce 2 moles of SO3

Step 2: Calculate Δ

Δ N  wNill be the sum of moles of products minus the sum of moles of reactants.

Number of moles of products = number of moles of SO3 = 2

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4 0
3 years ago
7. Lawrencium has a half-life of 3.00 minutes. I started with a 100.0 g sample. After 45.0 minutes how
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Answer:

N=3.05*10^-3g

Explanation:

Using Ln(No/N)=0.693/t½*t

Ln(No/N)=0.693/3*45

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100/exp(10.396)=N

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Explanation:

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