Answer:
The order of elements by volume-fraction (which is approximately molecular mole-fraction) in the atmosphere is nitrogen (78.1%), oxygen (20.9%), argon (0.96%), followed by (in uncertain order) carbon and hydrogen because water vapor and carbon dioxide, which represent most of these two elements in the air, are variable.
I copied and pasted but I hope this information is helpful :)
You can use a ruler to do that by using the numbers it has on the sides of it; you put the 0 inch part of the ruler on top of the place on where the object started and see how many inches it moved from the 0 mark to where it is right now.
2 molecules of Acetaldehyde is the product of a reaction of an alkene. One way in which alkenes can react to give carbonyl compounds (ketones/aldehydes) is the reaction with ozone, O₃. The ozonolysis of an alkene will result in cleavage of the carbon-carbon double bond and each carbon that was part of the alkene, will now have a double bond to oxygen. Each carbon of the original alkene will now be a carbonyl in the product.
To form 2 molecules of acetaldehyde, we must cleave an alkene that has the same substitution pattern on each side of the alkene so that the carbonyl compounds formed are identical. Therefore, both (E)- and (Z)-2-butene will react with ozone to give acetaldehyde. The scheme provided shows the reaction of both alkenes to give the acetaldehyde. The products are drawn in such a way to show which part of the original molecules they were derived from. However, both reactions do provide identical products.
The uncertainty in velocity is
<u>Explanation:</u>
As per Heisenberg's uncertainity principle, the position and momentum of any object cannot be measured simultaneously. So product of uncertainty in position and momentum will be equal to modified plank's constant.
Here momentum is the product of mass and velocity.
So,
Here, given mass (m) = 150 g = 0.150 kg
position delta x =
Planck's constant h =
So the uncertainty in velocity is .
Le Chatelier principle says, if a restriction is applied to a system in equilibrium, the system adjusts to a new equilibrium that tends to counteract the restriction. When equilibrium is under stress it will shift to relieve that stress.
or
all concentrations would change.