1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexxx [7]
3 years ago
9

Catalysts work by lowering the required __________ __________. What two words complete the sentence?

Chemistry
2 answers:
Stella [2.4K]3 years ago
7 0
The answer is activation energy

Catalysts increase the rate of reaction, they do this by lowering the activation energy for the reaction to happen
lubasha [3.4K]3 years ago
3 0

Catalysts work by lowering the required activation energy. Which, in turn, speeds up a chemical reaction.

You might be interested in
Given the starting solution had a concentration of 1.25 m, how many moles of co[h2o]6cl2 were available in the amount of startin
siniylev [52]
Molarity of solution is defined as number of moles present in one liter solution. Mathematically, it is expressed as 
Molarity = \frac{\text{number of moles}}{\text{volume of solution(l)}}

Thus, if 1 mole of solute is present in 1 liter solution, molarity of solution is 1 M.

In present case, initial conc, of solution was 1.25 M.

∴ Number of moles of <span>co[h2o]6cl2  available initially = 1.25 mole, if the solution is 1 liter</span>
3 0
3 years ago
What is the molarity of a solution prepared by dissolving 10.0g of kno3 in 250 ml of solution
maw [93]

Answer:

Mass of KNO3= 10g

Molar mass of KNO3 = 101.1032g/mol

Volume = 250ml = 0.25L

No of mole on of KNO3 = mass of KNO3/Molar mass of KNO3

no of mole of KNO3 = 10/101.1032

No of mole of KNO3 = 0.09891

molarity of KNO3 = no of mole of KNO3/Vol (L)

Molarity = 0.09891/0.25 = 0.3956M

Molarity of KNO3 = 0.3956M

8 0
3 years ago
On Monday while Johnny was getting ready for school, he was in the bathroom holding his comb when he got an itch on his head. Jo
balandron [24]
I'd say that his comb has a static electricity charge. It can either be negative, or positive. Let's just say it's positive, and the water is negatively charged. This means that it will affect the water flow when the two charges meet. I hope this helps! ~Mia
5 0
4 years ago
Read 2 more answers
How to calculate average mass in grams?
Dafna1 [17]

Explanation:

hope these help you answer

7 0
3 years ago
You are given sodium acetate, 1m hcl, nahco3 and na2co3. Determine which of these four you would need and then show calculations
valentina_108 [34]

solution:

the given compounds are sodium acetate, 1M HCL,NaHCO₃ and Na2CO₃

pH of the buffer solution is 4.7

the value of pKa of sodium bicarbonate is 6.37

the value of pKa of acetic acid is 4.7

calculate concentration of acetic acid by using the following forumula

pH=pKa+lag[salt]/[acid]

substitute the pH and Pka values in the formula.

4.7=4.7+log[salt]/[acid]

log[salt]/[acid]=0

thus, the concentration ratio of the salt and acid should be equal to each other.

Thus, concentration of sodium acetate is 0.05M

Concentration of sodium acetate= concentration of acid

= 0.05M

Volume of the buffer solution is 100mL

The buffer solution can be prepared as 0.05M of 50mL sodium acetate will react with 0.05M of 50mL of 0.05M of HCL.

The chemical equation for neutralization of the weak base with strong can be represented as show as

CH₃COONa+HCL-->CH₃COOH+NaCL


5 0
3 years ago
Other questions:
  • _____ is a control mechanism that intensifies an earlier reaction. A sensory receptor An effector Negative feedback Positive fee
    13·2 answers
  • What is a closed container in relation to the law of conservation of matter
    9·1 answer
  • At stp potassium is classified as?
    5·1 answer
  • Compare and contrast the fine and coarse adjustment knobs on a microscope
    15·1 answer
  • One mole is equal to how many particles
    10·1 answer
  • a chemist reacts 150.0 grams of HCl with an excess of MnO2. if the following reaction occurs: MnO2+4HCl=MnCl2+2H2O+Cl2 how many
    12·2 answers
  • Explain two ways that voltaic cells and electrolytic cells are similar AND two ways that they differ.
    14·1 answer
  • The initial concentration of reactants in a first order reaction is 0.27 M. The rate constant for the reactio is 0.75 s^-1. What
    7·1 answer
  • I need help fast!!! Fill in the coefficients
    15·1 answer
  • Name three things that are Not matter and why not
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!