Denser objects and substances experience a greater gravitational force acting upon their mass. This is why materials of different densities form layers. ... It is less dense than the Earth's crust, which is a solid. This is why the Earth's surface and atmosphere form distinct layers.
pls give brainliest if this helped :)
B. The nucleus of an atom contains protons and neutrons.
Answer:
-1104 kJ/mol
Explanation:
The change in the enthalpy of a reaction is equal to the difference between: the sum of the enthalpy changes of the bonds broken and the sum of the enthalpy changes of the bonds formed.
The bonds broken correspond to the cleavage of bonds of the reactants, the bonds formed correspond to the bonds of the products:
- we only break oxygen O=O bond, since carbon is not bonded to anything;
- we form two C=O bonds in carbon dioxide.
Therefore, the enthalpy change is calculated by:
Boyle’s Law I’m pretty sure
Answer:
10573.9K
Explanation:
Using pressure law equation;
P1/T1 = P2/T2
Where;
P1 = initial pressure (mmHg)
P2 = final pressure (mmHg)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question,
P1 = 46mmHg
P2 = 760mmHg
T1 = 640K
T2 = ?
Using P1/T1 = P2/T2
46/640 = 760/T2
Cross multiply
640 × 760 = 46 × T2
486400 = 46T2
T2 = 486400 ÷ 46
T2 = 10573.9K
