Any factor that causes molecules to collide more frequently speeds up the reaction rate. This is achieved by an increase of the reactants concentration, surface area, raised temp. , raised pressure of gaseous reactant, or an addition of catalysts to the reactant
Answer:
40.7 kJ
Explanation:
Applying,
q = c'n.................. Equation 1
Where q = Thermal Heat, c' = Heat of vaporization of water, n = number of mole of water.
But,
n = mass(m)/Molar mass(m')
n = m/m'............... Equation 2
Substitute equation 2 into equation 1
q = c'(m/m')............. Equation 3
Given: c' = 40.650 KJ/mol, m = 18.02 g
Constant: m' = 18 g/mol
Substitute into equation 3
q = 40.650(18.02/18)
q = 40.695 kJ
q ≈ 40.7 kJ
Answer:
A
Explanation:
When the particles where shot through gold foil, he found that most of the particles went through. Some scattered in various directions, and a few were even deflected back towards the source.
1. Cost (fairly high).
2. Weather Dependent.
3. Solar Energy Storage Is Expensive.
4. Uses a Lot of Space.
5. Associated with Pollution.
Based on the picture,
The name given to the group in the box would be : Ethyl
You can see that in the picture it has 2 carbon side chains, which mean it categorized as Ethyl
hope this helps
