N2O4(g) 2NO2(g) Which of the following represents the Keq value? 0.18 0.0067 0.131 0.0046

Answers

Answer 1

Answer: Keq= [NO2]^2/[N2O4] at equilibrium. Do you see how I got that formula?

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2. how are firefighters expected to deal with them

If the sum of the mass of the reactants is 12.5 what would be the sum of the products be? And explain how you know this

Answers

If all the reactants will react and become products, the mass will be 12.5 g. Because the mass of the matter amount will not change during the reaction.

All organic molecules have what element in common

Answers

Every organic molecules/compound contains carbon (c).

Some other very abundant are hydrogen, nitrogen, oxygen, phosphorus, and sulfur.

I learned this with the acronym CHNOPS.

C - Carbon

H - Hydrogen

N - Nitrogen

O - Oxygen

P - Phosphorus

S - Sulfur

Hope this helps!

Answer: The elements which are common for all organic molecules is hydrogen and carbon.

Explanation:

Another name for organic molecules are hydrocarbons. This means that the molecules which consist of hydrogen and carbon atoms is an organic compound.

For Example:

$H_2O\text{ and }CO_2$ are not organic compounds, because in water, carbon is not there and in carbon dioxide, hydrogen is not there. But, $CH_4$ is an organic compound because hydrogen and carbon both are present.

Hence, hydrogen and carbon elements are common to all organic molecules.

The force of attraction that the earth exerts on all objects is called

Answers

The force of attraction that the earth exerts on all objects is called gravitational force. The gravitational force is the force that has the property of attracting any object having a mass. Without this gravitational force it would not have been possible for anything to remain on earth. Everything would start floating without the gravitational pull of earth. There are actually four kind of forces that are considered in physics. They are the strong force, weak force, gravitational force and the electromagnetic force. It is absolutely true that every object is pulling other objects due to the forces present in nature.

Required nutrients in foods that are made by other living organisms are_______

Answers

Answer: Vitamins

Explanation:

they are nutrients that are made by living things

2KI + Pb(NO3)2 → 2KNO3 + PbI2 Determine how many grams of KI are required to produce 1.2g of PbI2.

Answers

Molar mass KI = 166.0028 g/mol and Pbl₂ = 461.0089 g/mol

2 Kl + Pb(NO₃)₂ ------> 2 KNO₃ + Pbl₂

2 x 166.0028 g ---------> 461.0089 g
? g KI -------------> 1.2 g

Mass KI = 1.2 x 2 x 166.0028 / 461.0089

Mass KI = 398.40672 / 461.0089

Mass KI = 0.86 g

hope this helps!

In a solution of salt and water, which component is the solute? A.
salt

B.
water

C.
beaker

D.
oxygen

Answers

Answer : The correct option is (A) Salt.

Explanation :

Solute : It is defined as a substance which is dissolved in a solvent. It is a smaller component of a solution.

Solvent : It is defined as a substance that dissolves a solute. It is a larger component of a solution.

In a salt and water solution, the solute is salt component and the solvent is water component.

Therefore, the correct answer is Salt.

The component of the solute is SALT.

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Which process represents a chemical change?(1) melting of ice(2) corrosion of copper(3) evaporation of water(4) crystallization of sugar

As a consequence of the discovery of the nucleus by rutherford, which model of the atom is thought to be true? a. electrons are distributed around the nucleus and occupy almost all the volume of the atom. b. protons, electrons and neutrons are evenly distributed throughout the volume of the atom. c. the nucleus is made of electrons and protons