What is often mistakenly regarded as being based on science?

when gas evolution becomes very slow, heat the solution gently in the hood, then allow it to cool. What gas is formed in this re

son4ous [18]

Nitrogen gas is formed in this reaction.

<h3 /><h3>Nitrogen gas</h3>

Atomic number 7 and the letter N designate nitrogen as the chemical element. Group 15 of the periodic table, often known as the pnictogens, contains nitrogen as the lightest nonmetal element. It ranks eighth in overall abundance in the Milky Way and the Solar System, making it a common element in the cosmos. Two of the element's atoms combine to create the colorless and odorless diatomic gas N2 at standard temperature and pressure. The most common element that isn't mixed, N2 makes up around 78 percent of the Earth's atmosphere. All living things contain nitrogen, which is mostly found in amino acids (and thus proteins), nucleic acids (DNA and RNA), and the energy-transfer molecule adenosine triphosphate.

Learn more about nitrogen gas here:

brainly.com/question/14642361

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8 0

2 years ago

Cho phản ứng hóa học xảy ra theo phương trình sau: Al + HNO3 ® Al(NO3)3 + N2O + H2O. Sau phản ứng thu được 3,36 (l) khí N2O (đkc

Amanda [17]

Explanation:

my God what kinda learning you doing?

3 0

3 years ago

How do lewis structures relate to oxidation number multiple choice?

spayn [35]

I don't know your mc choices so I am going to go with "the number of valence electrons"

Oxidation number: the amount of electrons an atom gains, loses or shares when it forms chemical bonds. As for the valence electrons, those are the electrons that are responsible for bonds/ reactions.

3 0

3 years ago

Density Practice

Angelina_Jolie [31]

Answer:

1) mass and volume

2) float.

3) Sink

4) Apples

5) Cannonball

Explanation:

1) Density is based on the mass and volume of a material.

2) A material or an object with low density than water or liquid tends to float.

3) A material or an object with high density than water or liquid tends to sink.

4) The apples in the water have less density as they are floating in the water.

5) The cannonball is more dense than the ocean water and the ball sink in the less density water.

4 0

3 years ago

A 23.6 g sample of NagPO4 (molar mass 163.94 g/mol) is dissolved in enough water to produce

Gnom [1K]

Taking into account the definition of molarity, the concentration of Na₃PO₄ in solution is 0.192 $\frac{moles}{lliter}$ .

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$

Molarity is expressed in units $\frac{moles}{lliter}$ .

<h3>Concentration of Na₃PO₄ in solution</h3>

Being the molar mass of Na₃PO₄ 163.94 g/mole, that is, the amount of mass that a substance contains in one mole, the amount of moles that contains 23.6 g sample of Na₃PO₄ is calculated as:

$23.6 gramsx\frac{1 mole}{163.94 grams} = 0.144 moles$