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Nuetrik [128]
3 years ago
10

A sample of nitrogen gas is at a pressure of 1.20 atm, a volume of 30.0 liters, and a

Chemistry
1 answer:
tamaranim1 [39]3 years ago
6 0

Answer:

1. 1.21mol

2.8.5kg

Explanation:

the number of moles and grams of gas in the sample

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A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is
Airida [17]

Answer:

the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C  

Explanation:

Given the data in the question;

First we calculate the Volume of the steel cylinder;

V = πr²h

radius r = Diameter / 2 = 27 cm / 2 = 13.5 cm

height h = 32.4 cm

so we substitute

V = π × ( 13.5 cm )² × 32.4 cm

V  = π × 182.25 cm × 32.4 cm

V = 18550.79 cm³  

V = 18.551 L

given that; maximum safe pressure P = 3.10 MPa = 30.5946 atm

vessel contains 0.218kg or 218 gram of carbon monoxide gas

molar mass of carbon monoxide gas is 28.010 g/mol

so

moles of carbon monoxide gas n = 218 gram /  28.010 g/mol = 7.7829 mol

we know that;

PV = nRT

solve for T

T = PV / nR

we know that gas constant R = 0.0820574 L•atm•mol⁻¹ K⁻¹

so we substitute

T = ( 30.5946 × 18.551 ) / ( 7.7829 × 0.082 )

T = 567.5604 / 0.6381978

T = 889.317387 K

T = ( 889.317387 - 273.15 ) °C

T = 616.167 ≈ 616 °C  { 3 significant digits }

Therefore, the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C  

6 0
3 years ago
Methanol has the formula CH3OH. What is the predominant intermolecular force between methanol molecules?
Usimov [2.4K]

Answer:

hydrogen bonds

Explanation:

similarly CH3OH also has a OH group and H hydrogen thus it will also form h-bonding.

3 0
3 years ago
Write the precipitation reaction for chromium(III) nitrate in aqueous solution: Use the pull-down menus to specify the state of
Licemer1 [7]

Answer:

Nitrate is considered SOLUBLE

Explanation:

please kindly refer to attachment for the step by step solution of the given problem.

6 0
3 years ago
An 8.5g Ice Cube is placed into 255g water.
Troyanec [42]
LAw of conservation of Energy is an important concept to solve this problem. The energy released is equal to the energy absorbed. 
Ice undergoes latent heat. MEaning there is a change in phase but not temperature and the energy is solved by (enthalpy of fusion)(mass) = 333.5J/g)(8.5g). =2834.75J. 
This is equal to the energy released by the water. The energy is computed by (mass)(specific heat of water)(temperature change) = (255g)(4.16J/gK)(T)

Final equation is: 
2834.75 = 255(4.16)(T) 
T = 2.67K
7 0
3 years ago
Read 2 more answers
Answer all parts of the following questions on Particle Stoichiometry.
Sever21 [200]
1. Translate, predict the products, and balance the equation above. 

Li + Cu(NO3)2 = Li(NO3)2 + Cu

2. How many particles of lithium are needed to produce 125 g of copper? 

125 g Cu ( 1 mol / 63.55 g ) (1 mol Li / 1 mol Cu ) ( 6.022 x 10^23 particles / 1 mol ) = 1.18x10^24 Li particles

3. How many grams of lithium nitrate are produced from 4.83E24 particles of copper (II) nitrate?

4.83E24 particles of copper (II) nitrate ( 1 mol / 6.022x10^23 particles ) (1 mol Li(NO3)2 / 1 mol Cu(NO3)2 ) ( 130.95 g / 1 mol ) = <span>1043.77 grams Li(NO3)2</span>
3 0
3 years ago
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