Answer:
Physical
Explanation:
because the erosion of the canyon did not change any of the chemical attributes of the rock it only changed the appearance. it may have changed the color which is an example of chemical properties but in this case, it is physical. But in other cases, you would refer to this type of weathering as mechanical weathering.
The answer would be +208 J.
Answer:
the amount of orbitals per period (row) will cause the difference between elements higher or lower on the periodic table.
Explanation:
a p e x
Answer:
a) 1:1
Explanation:
By the ideal gas law:
PV = nRT
Where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is temperature.
Both ballons are at the same conditions, so the gases have the same temperature and pressure. The number of moles is the mass(m) divided by the molar mass (Mr). The molar masses are:
Mr(Ne) = 20 g/mol
Mr(Ar) = 40 g/mol
Calling 1 for Ne, and 2 for Ar:
P1*V1 = (m1/20)*R*T1
m1 = 20P1V1/RT1
P2*V2 = (m2/40)*R*T2
m2 = 40P2V2/RT2
V1 = 2V2
m1/m2 = (20P1V1/RT1)/(40P21V2/RT2)
P1 = P2, T1 =T2 so they can be canceled, such as the R:
m1/m2 = 20V1/40V2
m1/m2 = 20*2V2/40V2
m1/m2 = 40V2/40V2
m1/m2 = 1/1
m1:m2 = 1:1