CHEMISTRY HIGH SCHOOL

The smallest unit into which a compound can be divided and still be that same compound is a(n) ___.

Answers

Answer 1

Answer: The molecule of that compound! Hope this helps!

Answer 2

Answer:

Answer:

The molecule of that compound.

Explanation:

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Each period of the periodic table ends with:

Answers

Each period of the periodic table ends with a noblegas.

What are noble gases?

Noble gas constitutes the seven chemical elements that make up up the eighteenth of the periodictable. The elements comprising the noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

These noble gases are odorless, colorless, tasteless, and nonflammable gases. Traditionally, they have been labeled as Group 0 in the periodic table was the name given to them for decades after they were discovered. They were named so be they it was believed that they are not able to bond to other atoms.

This meant that there could not combine with the atoms of other elements to form chemicalcompounds. The electronic structures of these structures and the discovery that some of them are able to combine with other atoms to form compounds led them to have a more appropriate name for Group 18.

Therefore each period of the periodic table ends with a noblegas.

Answers

7000m is the answer as 1 km is 1000m ...so 7km multiplied by 1000m u get 7000 m...and always remember if u r converting a bigger unit to a smaller unit u multiply and if u r converting a smaller unit to a bigger unit u divide

Answer:7,000m

Explanation:

Could volume by displacement be used to determine the volume of a lump of rock salt? Explain would be nice

Answers

Yes it could, but you'd have to set up the process very carefully.
I see two major challenges right away:

1). Displacement of water would not be a wise method, since rock salt
is soluble (dissolves) in water. So as soon as you start lowering it into
your graduated cylinder full of water, its volume would immediately start
to decrease. If you lowered it slowly enough, you might even measure
a volume close to zero, and when you pulled the string back out of the
water, there might be nothing left on the end of it.

So you would have to choose some other fluid besides water ... one in
which rock salt doesn't dissolve. I don't know right now what that could
be. You'd have to shop around and find one.

2). Whatever fluid you did choose, it would also have to be less dense
than rock salt. If it's more dense, then the rock salt just floats in it, and
never goes all the way under. If that happens, then you have a tough
time measuring the total volume of the lump.

So the displacement method could perhaps be used, in principle, but
it would not be easy.

Which statement describes the particles of an ideal gas based on the kinetic molecular theory?(1) The gas particles are relatively far apart and have negligible volume.
(2) The gas particles are in constant, nonlinear motion.
(3) The gas particles have attractive forces between them.
(4) The gas particles have collisions without transferring energy.

Answers

$\boxed{\left( {\text{1}} \right){\text{ The gas particles are relatively far apart and have negligible volume}}}$ is the correct statement that describes the particles of an ideal gas on the basis of kinetic molecular theory.

Further Explanation:

Kinetic theory of gases

It defines gas to be considered as a large number of particles. These particles move randomly in all directions. It explains the macroscopic properties of gases by considering their molecular composition and motion.

Postulates:

(a) The gas molecules are very small and are located far apart from each other. Most of the volume occupied by the gas is an empty space.

(b). The molecules of the gas are in rapid random motion. These can move in all directions.

(c). The gas molecules undergo collisions with each other and with the walls of the container. The collisions between molecules and container walls are responsible for the pressure of the gas.

(d). There is no loss of kinetic energy when gas molecules collide so their collisions are known as perfectly elastic.

(e). No interaction occurs between different gas particles during collisions.

(1) The gas particles are relatively far apart and have negligible volume.

The size of gas particles is very small and therefore these have negligible volume. Moreover, these molecules are far away from each other.

(2) The gas particles are in constant, nonlinear motion.

The motion of the gas particles occurs randomly in all directions so they can not be in constant, nonlinear motion.

(3) The gas particles have attractive forces between them.

The particles of gas have no interaction with each other. So no attractive forces are present between them.

(4) The gas particles have collisions without transferring energy.

The collisions of gas molecules are considered to be perfectly elastic. So the total energy of the system remains constant. It neither increases nor decreases.

Therefore the correct statement is (1).

Learn more:

Which will have the greatest average speed at 355 K?: brainly.com/question/1852048
Which statement is true for Boyle’s law: brainly.com/question/1158880

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ideal gas equation

Keywords: kinetic theory of gases, collisions, energy, constant, attractive forces, particles, molecules, volume, random motion, perfectly elastic, negligible.

Answer:

(1) The gas particles are relatively far apart and have negligible volume

Explanation:

The Kinetic Molecular Theory was formulated to explain the behaviour of ideal gases. The main postulates of the theory are:

-The volume occupied by the gases is negligible when compared to the distance between them

- They do not experience any intermolecular forces of attraction or repulsion

-The collision between gas particles is completely elastic

-The gas particles are in constant random motion

Therefore the first statement which suggests that the gas particles are relatively far apart and have negligible volume is in accordance with the theory

Which of the following are likely to not form bonds? A gold atoms.b. Oxygen atoms.
c. neon atoms.
d. magnesium and chlorine atoms.

Answers

I believe C is your best choice forgive me if I am wrong.

Calculate the number of moles of Al2O3 that are produced when 0.60 mol of Fe is produced in the following reaction: 2Al(s)+3FeO(s) = 3Fe(s)+Al2O3(s)

Answers

2 Al(s) + 3 FeO(s) = 3 Fe(s)+Al₂O₃(s)

3 moles Fe ------------> 1 mole Al₂O₃
0.60 moles Fe ------- > ?

moles Al₂O3 = 0.60 x 1 / 3

moles Al₂O₃ = 0.60 / 3

= 0.2 moles of Al₂O₃

hope this helps!

The number of mole of ${\text{A}}{{\text{l}}_2}{{\text{O}}_{\text{3}}}$ produced is $\boxed{{\text{0}}{\text{.20 mol}}}$ .

Further explanation:

A balanced chemical reaction is a chemical reaction that has equal number of atoms of the different elements in the reactant as well as on the product side. The chemical equation is required to be balanced to follow the Law of the conservation of mass.

Stoichiometry of a reaction is used to determine the number of species present in the reaction by the relationship between the reactants and products. It can be used to determine the moles of a compound when the moles of another compound in the reaction are given.

The general reaction is as follows:

${\text{A}}+2{\text{B}}\to3{\text{C}}$

Here,

A and B are reactants.

C is the product.

One mole of Aand two moles of B react to form three moles of C. The stoichiometric ratio between A and B is 1:2, between A and C is 1:3 and between B and C is 2:3.

The given chemical reaction is as follows:

${\text{2\;Al}}\left({\text{s}}\right)\;+\;{\text{3\;FeO}}\left({\text{s}}\right)\to {\text{3\;Fe}}\left({\text{s}}\right)+{\text{A}}{{\text{l}}_2}{{\text{O}}_{\text{3}}}\left({\text{s}}\right)$

According to the stoichiometry of the above-balanced chemical reaction, 2 moles of Al react with 3 moles of FeO to produce 3 moles of Fe and 1 mole of ${\text{A}}{{\text{l}}_2}{{\text{O}}_{\text{3}}}$ .

Therefore, the ratio of the moles of Fe and ${\text{A}}{{\text{l}}_2}{{\text{O}}_{\text{3}}}$ will be 3:1.

The formula to determine the number of moles of ${\text{A}}{{\text{l}}_2}{{\text{O}}_{\text{3}}}$ is written as follows:

${\text{Number of moles }}\left({{\text{A}}{{\text{l}}_2}{{\text{O}}_{\text{3}}}} \right)=(1)/(3){\text{(number of moles of Fe}})$ …… (1)

Substitute 0.60 mol for number of moles of Fe in equation (1).

$\begin{aligned}{\text{Number of moles}}\left({{\text{A}}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}}\right)&=\frac{{\text{1}}}{{\text{3}}}\left({{\text{0}}{\text{.60 mol}}}\right)\n&={\text{0}}{\text{.20 mol}}\n\end{aligned}$

Hence, 0.20 mol of ${\mathbf{A}}{{\mathbf{l}}_{\mathbf{2}}}{{\mathbf{O}}_{\mathbf{3}}}$ is produced when 0.60 mol of Fe is produced in the reaction.

Learn more:

1. Write the equation to show how cation acts as an acid brainly.com/question/2396649.

2. Which are the characteristics of mixtures brainly.com/question/1917079?

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Solutions

Keywords: Balanced chemical reaction, stoichiometry, reactants, products, number of moles, Fe, Al2O3, FeO and Al.

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