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oksano4ka [1.4K]
3 years ago
6

A sample of 1.00 moles of oxygen at 50°C and 98.6 kPa, occupies what volume?

Chemistry
1 answer:
enyata [817]3 years ago
5 0

Answer:

27.22 dm³

Explanation:

Given parameters:

number of moles = 1 mole

temperature= 50°C, in K gives 50+ 273 = 323K

Pressure= 98.6kpa in ATM, gives 0.973 ATM

Solution:

Since the unknown is the volume of gas, applying the ideal gas law will be appropriate in solving this problem.

The ideal gas law is mathematically expressed as,

Pv=nRT

where P is the pressure of the gas

V is the volume

n is the number of moles

R is the gas constant

T is the temperature

Input the parameters and solve for V,

0.973 x V = 1 x 0.082 x 323

V= 27.22 dm³

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If you had 1.50 g of ZnSO4.7H20, zinc sulfate septahydrate, how many grams of water will there be?
MariettaO [177]

Answer:

There will be 1.50 gram of water

5 0
3 years ago
Consider the following reaction: COCl2(g) ⇌ CO(g) + Cl2(g) A reaction mixture initially contains 1.6 M COCl2. Determine the equi
professor190 [17]

Answer:

The equilibrium concentration of CO is 0.0361 M

Explanation:

Step 1: Data given

Kc = 8.33 *10^-4

Molarity of COCl2 = 1.6 M

Step 2: The balanced equation:

COCl2(g) ⇌ CO(g) + Cl2(g)

Step 3: Calculate final concentrations

The initial concentration of COCl2 = 1.6M

The initial concentration of CO and Cl2 = 0M

There will react xM of COCl2

Since the mole ratio is 1:1

The final concentration of CO and Cl2 will be X M

The final concentration of COCl2 will be (1.6 -X)M

Step 4: Define Kc

Kc=  [CO] *[Cl2] /  [COCl2]  = 8.33*10^-4

Kc = X*X / 1.6-X = 8.33 * 10^-4

8.33 * 10^-4  = X² /(1.6-X)

8.33 * 10^-4 *(1.6 -X) = X²

0.0013328 - 8.33*10^-4 X = X²

X² + 8.33*10^-4 X  - 0.0013328= 0

X = 0.0361 M = [CO] = [Cl2]

[COCl2] = 1.6 - 0.0361 = 1.5639 M

To control this we can calculate the Kc

(0.0361*0.0361)/1.5639 = 0.000833

5 0
3 years ago
A 55.9 g sample of water at 99.2 °c is placed in a constant pressure calorimeter. then, 23.9 g of zinc metal at 21.1 °c is added
Veronika [31]
<span>Heat released by the water: mass * specific heat * ΔT

Heat released by the water = 55.9 g * 1 cal / (°C g) * (99.2 - 96.9 )°C

Heat absorbed by the zinc metal = mass * specifi heat * ΔT

Heat absorbed by the zinc metal =  23.9 g * Cp * (96.9 - 21.1) °C

Heat absorbed by zinc metal = heat released by water

=> 23.9 * Cp * 75.8 = 55.9 * 1 * 2.3

=> Cp = 128.57 / 1811.62 = 0.0071 cal / (g°C)

Answer: 0.0071 cal / (g°C)
</span>
4 0
3 years ago
What 4 elements whose isotopes have a half-life of more than one year?​
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6 0
3 years ago
Which one is it ASAP
katrin2010 [14]
First one is reaction force because anything that is given an action has an equal and opposite REACTION

potential energy is the energy that an object can have at any given moment.. it's STORED ENERGY from having a force wanting or acting upon it
Hope that helps
8 0
3 years ago
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