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Mars2501 [29]
3 years ago
15

What is the purpose of a catalyst?

Chemistry
2 answers:
Artyom0805 [142]3 years ago
5 0
Answer: A. To change the potential energy of the reactants.

Explanation:
Catalysts make such a breaking and rebuilding happen more efficiently. They do this by lowering the activation energy for the chemical reaction. Activation energy is the amount of energy needed to allow the chemical reaction to occur. The catalyst just changes the path to the new chemical partnership.

arlik [135]3 years ago
4 0
B. To lower the activation energy of a reaction

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sveticcg [70]

Answer:

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4 0
2 years ago
which of the following chemical symbol is that of an element with six electrons in the outermost shell a)Ca b)Cl c)Ne d)S​
nydimaria [60]
Hey there!

Sulphur is the element which has 6 electrons in the outermost shell.

WhereasCalcium,Neon have 2 and chlorine has 7.

Hope this explanation helps you :)
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5 0
2 years ago
Read 2 more answers
For many purposes we can treat ammonia NH3 as an ideal gas at temperatures above its boiling point of −33.°C. Suppose the temper
Keith_Richards [23]

Answer:

The new pressure will be 0.225 kPa.

Explanation:

Applying combined gas law:

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1\text{ and }V_1 are initial pressure and volume at initial temperature T_1.

P_2\text{ and }V_2 are final pressure and volume at initial temperature T_2.

We are given:

P_1=0.29 kPa\\V_1=V\\P_2=?\\V_2=V+50\% of V=1.5 V

T_1=-25^oC=248.15 K

T _2 = 16^oC=289.15 K

Putting values in above equation, we get:

\frac{0.29 kPa\times V}{248.15 K}=\frac{P_2\times 1.5V}{289.15 K}

P_1=0.225 kPa

Hence, the new pressure will be 0.225  kPa.

4 0
3 years ago
What is the difference between random decay and theoretical?
denis-greek [22]

Answer:

Spontaneous and random. Decay is called spontaneous because the occur on their own and are unaffected by external factors like temperature, pressure, and many more. Decay is called random because we cannot determine the rate at which it decays but can only determine the probability of the decay.Oct 21, 2015

Explanation:

7 0
3 years ago
Two different species of bacteria are examined. Scientists find that species X always produces CO2 and H2O during cellular respi
finlep [7]

Answer:

Only species Y is anaerobic.

Explanation:

  • Cellular respiration refers to the process in which food substances such as glucose are broken down to yield energy in the form of ATP, water and carbon dioxide as by-products.
  • Respiration may be either anaerobic or aerobic respiration.
  • Aerobic respiration is a type of respiration that takes place in the presence of oxygen. Nutrients are broken down to yield energy, water, and carbon dioxide.
  • Anaerobic respiration occurs in the absence of oxygen to yield few molecules of ATP, alcohol and carbon dioxide.
  • Therefore; species X carries out aerobic respiration while species Y carries out anaerobic respiration.
4 0
3 years ago
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