Answer:
If pressure increases, then volume decreases and vice versa, when temperature is held constant.” When pressure increases, the same number of molecules, or matter, are being forced closer together to occupy a shrinking space, their volume decreasing while their density correspondingly increases.
Explanation:
Answer:
0.416moles
Explanation:
Using the formula;
number of moles = mass ÷ molar mass
Molar mass of CO2 = 12 + 16(2)
= 12 + 32
= 44g/mol
According to the information in this question, there are 18.3g of CO2
number of moles (n) = 18.3/44
= 0.4159
= 0.416moles of CO2
Answer:
1.736 × 10⁶
Explanation:
Data provided in the question:
Intensity of the energy received from the sun = 1.1 kW/m² = 1.1 × 10³ W/m²
Energy required to arrive = 1.91 × 10⁹ J
Area at the surface = 1 m²
Now,
we know that
Energy = Intensity × Area × Time
or
1.91 × 10⁹ = ( 1.1 × 10³ ) × 1 × Time
or
Time = [ 1.91 × 10⁹ ] ÷ [ 1.1 × 10³ ]
or
Time = 1.736 × 10⁶
Answer:
half life=16.5hrs
sample=2g
total time=1day=24hrs
no. of half lives=total time/half life
no. of half lives=24hrs/16.5hrs=1.45approx1.5
sample left=1/2n=1/2[1.5]=0.707gapprox
Explanation: