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Levart [38]
3 years ago
6

What is the ideal gas constant?

Chemistry
1 answer:
sammy [17]3 years ago
7 0
It is a universal constant used for all gases
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Humans are most abundant during which geological era?
emmainna [20.7K]

Answer:

Cenoizic

Precamborian

8 0
3 years ago
What element is found in group 5 period 3?
tatuchka [14]

Answer:

Phosphorus

Explanation:

A group is a vertical column on the periodic table.

A period is a horizontal row on the periodic table.

5 0
2 years ago
HELPP!<br> how many grams are in 1.50 x 10(24) atoms of copper?
svlad2 [7]

Answer:

2266g

Explanation:

mass = no.of molecules /6.o23*1o(23) * molar mass

molar mass of co2= 44g /mol

1.5 .10^25/6.023 .10^23 =51.5 moles of co2

51.5 .44g/mol =2266 g

4 0
3 years ago
If the half-life of a radioisotope is 10,000 years, the amount remaining after 20,000 years is
Cloud [144]

Answer:

Considering the half-life of 10,000 years, after 20,000 years we will have a fourth of the remaining amount.

Explanation:

The half-time is the time a radioisotope takes to decay and lose half of its mass. Therefore, we can make the following scheme to know the amount remaining after a period of time:

Time_________________ Amount

t=0_____________________x

t=10,000 years____________x/2

t=20,000 years___________x/4

During the first 10,000 years the radioisotope lost half of its mass. After 10,000 years more (which means 2 half-lives), the remaining amount also lost half of its mass. Therefore, after 20,000 years, the we will have a fourth of the initial amount.

6 0
3 years ago
For the reaction PCl5(g) + heat PCl3(g) + Cl2(g), what will happen when the volume is increased?
bogdanovich [222]
This is an aplication of Le Chatelier Principle. So, if you need further details about the theory behind the answer, search for this subject.

Here is the answer and the explanation.

You can realize that 1 mol of reactant produce 2 moles of products, which means that the trend of the reaction is to increase the volume (at constant pressure) or to increase the pressure (at constant volume). If you realease the pressure by increasing the volume, Le Chaelier principle permit you to predict a displacement of the equilibrium to the right (to the products). This is, because the equilibrium will try to restore (increase) the pressure by producing more molecules.

So, the answer is the option B. There will be a shift toward the products.

 
4 0
3 years ago
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