Answer:
360.4 grams
Explanation:
The first step is to find the molecular mass of H2O. The molecular mass of a molecule is the atomic masses added altogether. Because there are 2 hydrogens, we need 2x the atomic mass. 2(1.01) + 1(16.00) = 18.02 amu.
The molar mass of H2O is 18.02 g/mol. This is the unit converter to change from moles to grams
Answer:
The new volume of the balloon is 600cm³
Explanation:
Given parameters:
Initial Volume, which is V₁ = 200cm³
Initial temperature, T₁ = 60°C
Final temperature T₂ = 180°C
Final Volume V₂ =?
To solve this kind of problem, we apply one of the gas laws that shows the relationship between volume and temperature.
This law is the Charles law, it states that " the volume of a fixed mass of a gas is directly proportional to its absolute temperature if pressure is constant".
It is simply expressed as:
V₁/T₁ = V₂/T₂
Since our unknown is V₂, we make it the subject of the expression given above:
V₂ = V₁T₂/T₁
Now input the corresponding values and solve:
V₂ = 200 x 180 / 60
V₂ = 36000/60
V₂ = 600cm³
The new volume of the balloon is 600cm³
Diffusion if the movement of small molecules across the cell membrane.
Kinetic energy of the molecules results in random motion, causing diffusion.
Answer:
2.5 moles of O₂
Explanation:
2RbNO₃⇒2RbNO₂+O₂-------------The equation is balanced
<u>Mole ratio for the equation</u>
2RbNO₃⇒2RbNO₂+O₂
2 2 1
RbNO₃:O
2:1---------------------------------------For every mole of oxygen produced ,two moles of RbNO₃ are required
<u>Given</u>
5 moles of RbNO₃ will produce ? moles of oxygen
2 moles of RbNO₃=1 mole of oxygen
5 moles of RbNO₃=?
=(5×1)/2 = 2.5 moles
