Why is gas production not recognized as nitrate reduction?

Answers

Answer 1
Answer: The gas production not recognized as nitrate reduction is because organisms that can ferment also produce gas. Therefore even if gas is produced on the tube, you can't tell if it's by fermentation or by nitrate reduction. I hope the answer helps. 

Related Questions

Why isn't propyne call 1-propyne, but heptene is called 3-heptene
Consider the reaction. mc015-1.jpg How many grams of N2 are required to produce 100.0 L of NH3 at STP?
Convert 35 miles (mi) to m
What would happen when a substance changes from one phase to another? A. The substance loses or gains heat. B. The average kinetic energy of the substance changes. C. The temperature of the substance changes. D. The molecular motion of the substance changes.
Which of the following species has the greatestnumber of electrons?1. Cl1−2. Co4+3. Fe2+4. V5. Sc2−

Predict the precipitate produced by mixing an Al(NO3)3 solution with a NaOH solution. Write the net ionic equation for the reaction. (Include the states of matter.)

Answers

Al(NO3)3(aq) + 3NaOH(s) --> Al(OH)3 (s) + 3NaNO3 (aq)

The precipitate here is Al(OH)3 (s), since the solid reactant is the precipitate in the aqueous solution. Usually, it is okay to assume in basic chemistry that the transition metal is going to be part of the compound that is the precipitate, especially in an acidic salt and a strong base reaction that we have here.

Antacids work to relieve stomach acids because of which of the following types of reactions? A) decomposition
B) double-displacement
C) synthesis
D) single-displacement

Answers

Answer: The correct answer is Option B.

Explanation:

Decomposition is a type of chemical reaction in which larger compound breaks down into two or more smaller compounds.

AB\rightarrow A+B

Double displacement reactions is defined as the chemical reaction in which exchange of ions takes place.

AB+CD\rightarrow AD+CB

Synthesis reaction is a type of reaction in which two or more smaller compounds combines to form a single large compound.

A+B\rightarrow AB

Single displacement reaction is a type of reaction in which a more reactive metal displaces a less reactive metal from its chemical reaction.

A+BC\rightarrow AC+B

In stomach, an acid is present known as hydrochloric acid and to neutralize its effect, antacid is taken which has CaCO_ as a component.

The reaction between HCl and CaCO_3is a type of neutralization reaction and it is a type of double displacement reaction.

The equation between the two follows:

CaCO_3+HCl\rightarrow CaCl_2+H_2O+CO_2

Hence, the correct answer is Option B.

How many liters of oxygen at stp are needed to react with 5.2 * 10 to the 22nd power molecules of hydrogen sulfide?

Answers

For the reaction H2S + 2 O2 -> H2SO4

starting with 5.2 x 10^22 molecules of H2S we can calculate the number of moles H2S by dividing by 6.02 x 10^23

We have 0.086 moles H2S

1 mole of H2S reacts with 2 moles of O2 so we need 0.17 moles of O2

1 mole of all gases at stp occupy 22.4 liters of space

.17 x 22.4 = 3.08 liters of O2 needed to react with 5.2 x 10^22 molecules of H2S

Which planet do scientists believe prevented the asteroids in the asteroids belt from forming a planet? A. Earth
B. Jupiter
C. Mars
D. Neptune

Answers

I think it is Jupiter. Let me know if I am right, I hope I am.

Answer: Jupiter is believed to have prevented the asteroids in the asteroid belt from forming a planet.

Why do goldfish in a crowded bowl have a better chance of survival in cold water than in warm water

Answers

Due to high amount of dissolved oxygen in cold water, goldfish have a better chance of survival.

what is dissolved oxygen?

Dissolved oxygen is the amount of oxygen that is present in the water bodies.

As dissolved oxygen is very much important for the aquatic animals because their survival depends on the water. When we increases the temperature of water then the amount of dissolved oxygen decreases which cuts off the supply of oxygen to the aquatic animals. That's why every aquatic specie has a better chance of survival in the cold water, due to presence of the abundant dissolved oxygen.

Hence, goldfish has a better survival in cold water because of dissolved oxygen.

To learn more about dissolved oxygen, visit below link:

brainly.com/question/26073928

Gases are less soluble in warm water, which means that the oxygen leaves the water and the fish dies. Cold water keeps oxygen in for longer.

4. If an object has a density of 0.8 g/cm3, will it float or sink in water?

Answers

Explanation:

Substances with their density less than the density of water which is 1 g/cm³ will float on it whiles those greater than that of water will sink into the water.

From the question the density of the object is 0.8 g/cm³

Since it's density is less than that of water the object will float on water .

Hope this helps you

Final answer:

An object with a density of 0.8 g/cm3 will float in water because its density is less than the density of water, which is 1 g/cm3.

Explanation:

The question is asking whether an object with a density of 0.8 g/cm3 will float or sink in water. Floating and sinking are determined by the principle of buoyancy, which depends on the density of the object compared to the fluid (in this case, water) it is placed in.

Water has a density of 1 g/cm3. So, if the object's density is less than 1 g/cm3, it will float, if it's more it will sink. Since 0.8 g/cm3 is less than 1 g/cm3, an object with this density will float in water.

Learn more about Density & Buoyancy here:

brainly.com/question/33146571

#SPJ3