Natural abundance of oxygen I think
Answer:
Where the products are H2O and Ba(NO3)2
Explanation:
A base, as, barium hydroxide (Ba(OH)2) reacts with an acid (HNO3), producing water (H2O), and the related salt (Ba(NO3)2) in a reaction called <em>neutralization reaction.</em>
The balanced reaction is:
Ba(OH)2 + 2 HNO3 → 2 H2O + Ba(NO3)2
<em>Where the products are H2O and Ba(NO3)2</em>
Answer:
15.24 J is the change in internal energy for this process.
Explanation:
According to the first law of thermodynamics:-
Where,
U is the internal energy
q is the heat
w is the work done
From the question,
q = + 75 J
(+ sign as the heat is being absorbed)
The expression for the calculation of work done is shown below as:
Where, P is the pressure
is the change in volume
From the question,
= 2.00 - 1.40 L = 0.60 L
P = 1.02 atm
Also, 1 atmL = 101.3 J
So,
(work is done by the system)
So,
<u>15.24 J is the change in internal energy for this process.</u>
Answer:
D. severe weather events would occur more often
Explanation:
If the average global temperatures on Earth increased, there are high chances of severe weather events occurring more often
- Weather events are devastating in nature.
- Examples are hail, blizzards, Lightning and thunderstorm
Increase in average global temperatures can result in these disasters.
When global temperatures increases, polar ice will melt and sea levels will increase.
This will cause storms in coastal areas and flooding.
Answer:
D
Explanation:
gravitational force: F=GmM/r^2
so this equation tells you that when mass increases force increases and when the distance increases force decreases
since the mass of the objects is the same in both cases, but distance is greater in case B than case A, case B has a smaller attractive force compared to A
