Answer:
A continent is a large distinct landmass.
There are seven continents on Earth.
Continents cover two-thirds of Earth’s surface.
Explanation:
Answer : The volume of gas occupy at
is, 1.25 L
Explanation :
Charles' Law : It states that volume of the gas is directly proportional to the temperature of the gas at constant pressure and number of moles.
Mathematically,
![\frac{V_1}{T_1}=\frac{V_2}{T_2}](https://tex.z-dn.net/?f=%5Cfrac%7BV_1%7D%7BT_1%7D%3D%5Cfrac%7BV_2%7D%7BT_2%7D)
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
![V_1=1.00L\\T_1=25.0^oC=(25.0+273)K=298K\\V_2=?\\T_2=1.00\times 10^2^oC=((1.00\times 10^2)+273)K=373K](https://tex.z-dn.net/?f=V_1%3D1.00L%5C%5CT_1%3D25.0%5EoC%3D%2825.0%2B273%29K%3D298K%5C%5CV_2%3D%3F%5C%5CT_2%3D1.00%5Ctimes%2010%5E2%5EoC%3D%28%281.00%5Ctimes%2010%5E2%29%2B273%29K%3D373K)
Putting values in above equation, we get:
![\frac{1.00L}{298K}=\frac{V_2}{373K}\\\\V_2=1.25L](https://tex.z-dn.net/?f=%5Cfrac%7B1.00L%7D%7B298K%7D%3D%5Cfrac%7BV_2%7D%7B373K%7D%5C%5C%5C%5CV_2%3D1.25L)
Therefore, the volume of gas occupy at
is, 1.25 L
Answer:
M HCl sln = 12.0785 M
Explanation:
- molarity (M) [=] mol/L
- %mm = ((mass compound)/(mass sln))*100
∴ mass sln = 100.0 g
∴ δ sln = 1.19 g/mL
∴ % m/m = 37 %
⇒ 37 % =((mass HCl/mass sln))*100
⇒ 0.37 = mass HCl / 100.0 g
⇒ 37 g = mass HCl
∴ molar mass HCl = 36.46 g/mol
⇒ mol HCl = (37 g)*(mol/36.46 g) = 1.015 mol
⇒ volume sln = (100 g sln)*(mL/1.19 g) = 84.034 mL = 0.084034 L
⇒ M HClsln = 1.015 mol/0.084034 L
⇒ M HCl sln = 12.0785 M
Chlorine is a halogen and all halogens and oxygen, nitrogen and hydrogen are diatomics
The answer to the question is Eight