Answer:
answer is b
use pv=nRT
p directly proportional to moles(n)
p1/p2=n1/n2
p/p2=n/2n
p2=2p
Answer:
They both alter the pH of a solution.
Explanation:
If a strong acid is added, the pH of a solution will lower. This is because more hydrogens/hydroniums are increasing in the solution. If a strong base is added, the pH will increase. This is because hydrogens/hydroniums are decreasing in the solution.
Answer:
1. A neutralization reaction is when an acid a base react to form water and salt and involves the combination of H+ ions and OH- negative ions to generate water.
2. starchy refined carbohydrates such as chips, bread, pasta, etc
3.a. brush with fluoride toothpaste after eating or drinking
b. rinse your mouth
c. visit your dentist regularly
d. consider dental sealants
e. drink some tap water
f. avoid frequent snacking and sipping
g.eat tooth- healthy foods
h. consider fluoride treatments
I. ask about antibacterial treatments
j.combined treatments
4. Add diary: the fiery chemical in hot chillies, capsaicin, likes to bound itself onto a compound in milk, which neutralises the burn. Add a generous dollop sour cream, creme fraiche, yogurt or even a touch of milk or cream to spicy foods . For best results tho go with full fat diary.
5.a. Gypsum ( calcium sulphate, CaSo4. 2H2O)
b. baking soda or zinc carbonate
c. lithium hydroxide
d. lemon juice and ordinary vinegar
e.distilled white vin6
I think that the best and is c) try that one that one ones have some things that are wrong
Answer:
1. F
2. F
3. F
Explanation:
<em>Determine if the following statements are true or false. </em>
- <em>The rate law for an overall reaction can be written using the coefficients from the overall reaction.</em> FALSE. The rate law includes the reaction orders, which have to be determined experimentally and may or may not be equal to the coefficients of the overall reaction.
- <em>The rate-determining step of the reaction is always the first step of the reaction.</em> FALSE. The rate-determining step is always the slowest step.
- <em>A catalyst is a species that is added to the reaction, lowers the activation energy of a reaction, shows up in the rate law (most of the time), and will be in the overall balanced equation.</em> FALSE. A catalyst does lower the activation energy of the reaction, but it doesn't show up in the rate law nor the overall balanced equation.