Wouldn't it be 100? 150 - 50 would equal 100. Unless I'm not seeing something.
Answer:
Thus, the radius of the helium atom in nanometers is - 0.031 nm
Explanation:
Given that:-
The radius of the helium atom = 31 pm
Considering the conversion of length in pm to the length in nm as:-
1 pm = 0.001 nm
So,
Applying the above conversion factor in the radius of helium atom as:-
Radius = nm = 0.031 nm
<u>Thus, the radius of the helium atom in nanometers is - 0.031 nm</u>
Answer:
B: increase.
Explanation:
When we are considering two gases A and B in a container at room temperature .
We have to find the change on rate of reaction when the number of molecules of gases A is doubled
Let [A]=a and [B]=b
A+B product
Rate of reaction
We know that concentration is increases with increase in number of moles
When the number of molecules of gases A is doubled then concentration of gases A increases.
Therefore ,[A]=2a
Rate of reaction
Hence, the rate of reaction is 2 times the initial rate of reaction.Therefore, the rate of reaction will increase when the number of molecules of gases A is doubled.
Answer: B: increase.
Answer:
The rate of heat transfer in cooler A is lower than the rate of heat transfer in cooler B and more heat energy is being transferred in cooler B than in cooler A.
Explanation:
A person packs two identical coolers for a picnic, placing twenty-four 12-ounce soft drinks and 5 pounds of ice in each. However, the drinks put into cooler A were refrigerated for several hours before they were packed in the cooler, while the drinks put into cooler B were at room temperature.
Therefore, the drinks in cooler A are at lower temperatures than those in cooler B because the drinks in cooler A have been refrigerated for several hours.
Generally when there is temperature gradient in a system, heat energy will flow from the body at high temperature to the body at low temperature until thermal equilibrium is reached.
The rate of heat transfer in cooler A is lower than the rate of heat transfer in cooler B and more heat energy is being transferred in cooler B than in cooler A. As a result, majority of the ice in cooler B has melted while there are still more ice in cooler A.
Answer:
Positive acceleration involves speeding up, while negative acceleration involves slowing down.
Explanation:
I am so sorry if I was wrong!