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Arlecino [84]
3 years ago
7

A substance that speeds up a chemical reaction without being part of the chemical change, itself:

Chemistry
1 answer:
allochka39001 [22]3 years ago
6 0
It is known as a catalyst 
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What is buffers and mention its importance?
GenaCL600 [577]

Answer:

Buffer is the chemical substance that addition of acids and bases, maintaining constant environment,its called Buffer.

Explanation:

  • Buffers are use in the system to maintain the value of pH, and the contain the pH value is not to change.
  • Buffer maintain the body of pH for the optimal activity,and they are solution of pH constant.
  • Buffer in used in the lab and that to maintain growth of the micro tissues and the culture media.
  • Buffer are used in maintain necessary optimal reaction activity,determine the indicator of solution with pH.
  • Buffer capacity is that concentration to the buffering agent, is the very small increase,buffer capacity to the pH is 32% , of the maximum value of pH.
  • Buffers in a acid regions to the desired of that value to the particular buffer agent.
  • Buffers can be made from that a mixture of the base and acid, buffer can be a wide range of the obtained.
  • Buffers that the pH  calculation and they required to performed in the critic acid that the overlap over the buffer range.

5 0
3 years ago
A piece of iron is heated to 120'C then placed in a calorimeter containing 50g of water. The water temperature is raised from 30
Lana71 [14]

Answer:

Mass of iron = 59.375 gm

Explanation:

Calories ( or joules) are added to the water by the hot steel so at the endpoint they are BOTH at 40 C

 The water gains:

     4.18  j/g-C  * 50 * (40-30 C) = 2090 j

The steel gave up 2090 j going from 120 to 40 C

2090 = .44 j/g-C  * m * (120-40)    solve fro m = 59.375 gm

3 0
2 years ago
What is 8S8 <br><br> In need for a quick answer
kirza4 [7]

Answer:

8x8 Inc. is a provider of Voice over IP products. 8x8 products include cloud-based voice, contact center, video, mobile and unified communications for businesses.

Explanation:

7 0
2 years ago
When the gases dihydrogen monosulfide and oxygen react, they form the gases sulfur dioxide and water vapor. Write the balanced c
Anna35 [415]
2(H2S) + 3(O2) -> 2(SO2) + 2(H2O)
7 0
2 years ago
Which of the following have the lowest density solids rocks liquids gases
denis23 [38]

Answer:

gases

Explanation:

because  the solid (steel) is the most dense, the gas (air) is the least dense, and the density of the liquid (water) is in between.

7 0
3 years ago
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