CHEMISTRY HIGH SCHOOL

During which process is water produced?a. alcohol fermentation
b. acetyl CoA formation
c. electron transport chain
d. citric acid cycle

Answers

Answer 1
Answer: The answer is C. It is the electron transport chain reaction that produces water as one of it product. This type of reaction is the final and essential step in cell respiration. It's main function is to produce ATP but another product is also produced which is water. 
Answer 2
Answer:

Answer:

The answer to this problem is c

Explanation:

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Why is a high temperature needed to melt potassium iodide?

Answers

Explanation:

Potassium Iodide -

It is a salt , which is made of the ions of potassium and iodine ,

Potassium being the cation , and iodide being the anion .

The ions of this salt are held by strong ionic forces , which hold the ions together very strongly .

Hence , a lot of energy is required to melt the salt , as the bond between the ions is very strong .

Hence , the melting point of this salt , i.e. , Potassium Iodide , is very strong .
Potassium Iodide have a lot of strong bonds which requires a very high temperature (high energy) to break them and change into a different state of matter. 

A student measures the mass of a substance as 1.7132kg and it's volume as 0.65l. What is the density substance in g/mL? Round your answer to the correct number of significant figures

Answers

Answer:

The substance has a density of 2.636 grams per mililiter.

Explanation:

We must remember that density (\rho), measured in grams per mililiters, is the mass of the substance (m), measured in grams, divided by its volume (V), measured in mililiters. That is:

\rho = (m)/(V)

In addition, a kilogram equals 1000 grams and a liter equals 1000 mililiters. If we know that m = 1713.2\,g and V = 650\,mL, then:

\rho = (1713.2\,g)/(650\,mL)

\rho = 2.636\,(g)/(mL)

The substance has a density of 2.636 grams per mililiter.

The reaction AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) is a_________reaction. please help

Answers

Answer:

it's a precipitation reaction.

Explanation:

the solid produced is insoluble with water–making it a precipitate.

Explain, in terms of both atoms and molecular structure, why there is no isomer of CH3OH.

Answers

Explain, in terms of both atoms and molecular structure, why there is no isomer of CH3OH.

There is no isomer of CH3OH or methanol because it contains only one carbon atom. And also, the structure is tetrahedral, having four substances attached to the carbon atom.

29 Which term identifies a type of nuclear reaction?(1) fermentation (3) reduction
(2) deposition (4) fission

Answers

Answer:The correct answer is option (4).

Explanation:

Nuclear reaction :These the chemical reaction in which change in identity of a nucleus of an atom takes place.It is of two types:

  1. Fusion is a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.
  2. Fission is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.

From the given options the option identifying the nuclear reaction is fission.Hence. the correct answer is option 4.
4) fission is a nuclear reaction where the nucleus of a reactant breaks apart

A chemist measures 340 grams of sodium acetate. To convert this measurement to kilograms, the chemist should multiply 340 by _.a) 1 kg / 1 g
b) 1000 g / 1 kg
c) 1000 kg / 1000 g
d) 1 kg / 1000 g

Answers

Answer:

option d = 1 kg/ 1000 g

Explanation:

Given data:

Mass of sodium acetate = 340 g

Mass of sodium acetate in Kg = ?

Solution:

Gram and kilogram both are units of mass. Kilogram is larger unit while gram is smaller unit. The one kilogram equals to the 1000g. In order to convert the given value into kilogram the value must be multiply with 1 Kg/ 1000g.

340 g × 1 Kg/ 1000g

0.34 Kg
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