CHEMISTRY HIGH SCHOOL

How do you think the law of conservation of mass affects chemical equations?

Answers

Answer 1
Answer:

Answer:

,dgeh

Explanation:

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How many calories are absorbed by a sample water with a mass of 500 grams as it changes from 50 degrees C to 65 degrees C?

Answers

H = mCpT

H = (500 grams water)( 4.18 J/ g - degrees C) (65 - 50)

H =31,350 J

since 1 cal = 4184 joules

31,350 Joules (1 calorie/ 4184 joules) = 7.49 calories

__________ What is the value of the activation energy for the forward reaction? Be sure to include theappropriate sign.

Answers

Answer:

+60 kJ

Explanation:

Activation energy = PE(AB) - PE(A+B) = 100 -40 = +60 kJ

How many grams are in 238 moles of arsenic

Answers

1 mole of arsenic----------- 75g
238 moles of arsenic ----------x g
x = 17850g of arsenic

At the end of β-oxidation all carbons of a fatty acid are released in the form of

Answers

Answer:

ACETYL-CoA, FADH

2  NADH  

 acetyl-CoA

Explanation: Beta oxidation of carbons of fatty acid acid molecules leads to the formation Acetyl-CoA, FADH and NADH.

The overall reaction for the process

Cn-acyl-CoA + FAD + NAD+

+ H

2O + CoA → Cn-2-acyl-CoA + FADH

2 + NADH + H+

+ acetyl-CoA.

formula of NADH is C21H27N7O14P2

formula of FADH is ‎C27H35N9O15P2.

Both NADH(Nicotinamide adenine dinucleotide) and FADH( Flavin adenine dinucleotide) are

formular for Acetyl CoA IS C23H38N7O17P3S.

Beta oxidation is a breakdown process taking place in living systems which catabolises the fatty acids through glycolysis or fermentation leading to the release of Acetyl CoA, NADH AND FADH2.

What interacted directly with the photographic plates to cause images in Becquerel’s experiment?A...uranium salt

B...radiation

C...unstable nuclei

D...radioisotopes

Answers

Answer: A. uranium salt

Becquerel made a conclusion that it was the uranium that causes the images found in the photographic plates. Though his theory was disproved during the first time,he continued to develop it. Then, it is through this experiment that Becquerel discovered radioactivity.

Answer:

a on edge 2021

Explanation:

Which system helps to prevent microscopic infection and also regulates body temperature?

Answers

The body's immune system helps prevent microscopic infection and regulates the body's temperature. The immune system is a collection of organs, cells, and tissues that all work together to maintain the body's resistance to diseases. It has the ability to distinguish pathogens from the body's own tissues, so it can make the necessary responses to fight them.
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