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NeX [460]
3 years ago
10

True/False - Changing the temperature has no effect on the application of Graham's law?

Chemistry
1 answer:
Jlenok [28]3 years ago
5 0

Explanation:

By Graham's Law,

We have r1/r2 = √(M2/M1), where M represents the molar mass of the gas and r is the effusion rate.

Since temperature is not a variable here, the sentence is true.

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What is the mass of 5 miles in ba3n2
Rasek [7]

Answer:

2200 g

Explanation:

Data Given:

no. of moles of Ba₃N₂ = 5 moles

mass of Ba₃N₂ = ?

Solution:

Formula used

            no. of moles = mass in grams / molar mass

To find mass rearrange the above equation:

mass in grams = no. of moles x molar mass. . . . . . (1)

molar mass of  Ba₃N₂

molar mass of  Ba₃N₂ = 3(137.3) + 2(14)

molar mass of  Ba₃N₂ = 412 + 28

molar mass of  Ba₃N₂ = 440 g/mol

Put values in equation 1

         mass in grams = 5 moles x 440 g/mol

         mass in grams = 2200 g

So,

mass of Ba₃N₂ = 2200 g

8 0
4 years ago
Using the equation 40kJ+2SO3(g)-->2SO2(g) + O2(g), if pressure is added what way
Ad libitum [116K]

In an equation, 40kJ + 2SO₃ (g) -->2SO₂(g) + O₂(g), if pressure added, the equilibrium shifts to the left side of the reaction because it has fewer moles of gas.

<h3>What is Le Ch atelier's principle?</h3>

Le Ch atelier's principle states that if the pressure is added in a nay reaction, then the equilibrium will be shifted toward the side where there are fewer atoms.

In this case, there are fewer moles on the left side.

Thus, when pressure is added, the equilibrium shift to the left side due to Le Ch atelier's principle.

Learn more about Le Ch atelier's principle

brainly.com/question/2001993

#SPJ1

6 0
2 years ago
How is the number 3.91 x 10-4 expressed in regular numbers?
Semenov [28]

To convert a number without the use of the expression 10^-4 you would have to treat it like an integer line for instance on an integer line the negative is to the left and the positive number is to the right so 3.91*10^-4 means that the decimal would have to move 4 places to the left so the answer would be .000391 instead of 3.91*10^-4.


I hope this helps you :)

3 0
3 years ago
Which of these processes indicates that smelting copper is a chemical change
BlackZzzverrR [31]

The correct answer is D:


it involves breaking molecular bonds between copper compounds .


The explanation :


-when we melt a copper it is a physical change because the substance is still copper and have the same shape.


- but for example Burning a copper it is a chemical change. Fire activates a chemical reaction between copper and oxygen.


-The oxygen in the air reacts with the copper and the chemical bonds are broken.


- the chemical change is changing the other compound bonded to the copper atoms.


So, the correct answer is D

5 0
3 years ago
Read 2 more answers
Is oxygen a necessary reactant for oxidation reaction ​
storchak [24]

Answer:

Oxidation: A process in which an atom loses an electron and therefore increases its oxidation number. ... So oxidation reactions need not involve oxygen. This redox reaction is actually the sum of two separate half-reactions (a reduction half-reaction and an oxidation half-reaction).

Explanation:

Hope this helped!

3 0
3 years ago
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