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pshichka [43]
3 years ago
12

Chemical Formula 1

Chemistry
1 answer:
krok68 [10]3 years ago
5 0

Just try ur Best ok your welcome

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A 0.580 g sample of a compound containing only carbon and hydrogen contains 0.480 g of carbon and 0.100 g of hydrogen. At STP, 3
Sati [7]

Answer:

Molecular formula for the gas is: C₄H₁₀

Explanation:

Let's propose the Ideal Gases Law to determine the moles of gas, that contains 0.087 g

At STP → 1 atm and 273.15K

1 atm . 0.0336 L = n . 0.082 . 273.15 K

n = (1 atm . 0.0336 L) / (0.082 . 273.15 K)

n = 1.500 × 10⁻³ moles

Molar mass of gas = 0.087 g / 1.500 × 10⁻³ moles = 58 g/m

Now we propose rules of three:

If 0.580 g of gas has ____ 0.480 g of C _____ 0.100 g of C

58 g of gas (1mol) would have:

(58 g . 0.480) / 0.580 = 48 g of C  

(58 g . 0.100) / 0.580 = 10 g of H

 48 g of C / 12 g/mol = 4 mol

 10 g of H / 1g/mol = 10 moles

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3 years ago
Which is the smallest?<br> A) 1.3 x 1020<br> B) 2.9 x 1021<br> C) 9.5 x 1032<br> d) 8.4 x 1019
alexgriva [62]
Answer: A, 1.3*1020, 1326

A. 1326

B. 2960.9

C. 9804

D. 8559.6
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PLEASE HELP ME ASAPPPP
sattari [20]
Boyle’s law gives the relationship between pressure and volume of gases. It states that at constant temperature the pressure of gas is inversely proportional to volume of gas.
PV = k
Where P is pressure V is volume and k is constant
P1V1 = P2V2
Parameters at STP are on the left side and parameters for the second instance are on the right side of the equation
P1 - standard pressure - 1.0 atm
Substituting the values in the equation
1.0 atm x 5.00 L = P x 15.0 L
P = 0.33 atm
New pressure is 0.33 atm
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One difference between mixtures and pure substances is that A) mixtures can be physically separated. B) mixtures are made of one
Alborosie
The answer your looking for is a)
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What is the mass in grams of 4.30 moles of al??
anygoal [31]
It is 116.0206134 I guess
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3 years ago
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