Answer:
15 kJ
Explanation:
We need to know the following;
what is activation energy?
- Activation energy is the minimum energy required by reactants for a chemical reaction to take place.
What are catalysts?
- Catalysts are molecules or substances that speed up the rate of a chemical reaction.
- In other words, catalysts increase the speed at which products are formed from reactants.
How do catalysts speed up reactions?
- Catalysts speed the rate of chemical reactions by lowering the activation energy of the reactants.
- When activation energy is lowered, reactants require less energy for the reaction to occur which easily achieved making the reaction proceed faster.
- Therefore, in presence of a catalyst, the new activation energy should be lower than the initial value of activation energy.
Full Question:
What is the Lewis structure of the covalent compound that contains one nitrogen atom, one hydrogen atom, and one carbon atom?
Explanation:
This covalent compound is the hydrogen cyanide, HCN.
The following steps are used to obtain it;
Step 1. Draw a skeleton structure of the compound based on the elements
Put the least electronegative atom C in the middle with H and Cl on either side.
H-C-N
Step 2. Count the valence (outermost) electrons you can use
H + C + N = 1 + 4 + 5 = 10
Step 3. Add these electrons to give every atom an octet
You have to put a triple bond between C and N.
Note: Each bond is made up of two electrons.
The lewis structure is given in the image below;
Answer:
Bcuz when solid is near heat it changes to liquid this is called physical change
Answer:
Fc = 1.7x10^-4 N
Explanation:
Convert everything to proper units:
m = 25mg = 2.5x10^-5 kg
r = 17.6cm = 0.176m
v = 110cm/s = 1.1m/s
the formula for centripetal force is Fc = mv^2 / r
Plug everything and solve for Fc;
fc = (2.5x10^-5)(1.1^2) / 0.176
Fc = 1.7x10^-4 N
1) nose moisturizer
2)split end
3) hair conditioner
4) lubricant
5)dry skin. vasalene
gas
1) fuel 4 cars
2)fuel 4 homes
I'm sure not a full list, but hoping 2 help
