How many protons, neutrons, and electrons could an isotope of this atom contain?

Answers

Answer 1

Answer:

Explanation:

isotope are atom of the same elements with the same number of protons, electron and different number of neutrons.

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For Gay-Lussac's law, temperature is measured in _____.

Answers

For Scientist Joseph Louis Gay-Lussac's law, temperature is measured on an absolute scale, specifically Kelvins or k. The formula may be expressed in P/T=k (P over T equals k). The answer to this question is 'kelvins'. I hope this helps.

Under which conditions of temperature and pressure would a 1-liter sample of a real gas behave most like an ideal gas?(1) 100 K and 0.1 atm
(2) 100 K and 10 atm
(3) 500 K and 0.1 atm
(4) 500 K and 10 atm

Answers

Answer : The correct option is (3) 500 K and 0.1 atm.

Explanation :

A real gas behaves ideally at high temperature and low pressure.

The ideal gas equation is,

$PV=nRT$

where,

P = pressure of gas

V = Volume of gas

R = Gas constant

T = temperature of gas

n = number of moles of gas

The ideal gas works properly when the inter-molecular interactions between the gas molecules and volume of gas molecule will be negligible. This is possible when pressure is low and temperature is high.

Therefore, the correct option is (3) 500 K and 0.1 atm.

Answer:

The correct answer is (3).

Explanation:

A real gas can behave ideally at high temperatures and low pressures. The ideal gas is correctly characterized when the intermolecular interactions between the gas molecules and the volume of the gas molecule are negligible. This is only possible when system conditions are at low pressures and high temperatures.

Have a nice day!

Which of the following elements would be classified as a nonmetal? sulfur aluminum silicon calcium

Answers

sulfur is a non metal

Sulfur is considered a non-metal. Thanks for posting your question. Feel free to ask me any question. I might not always know the answer. Although i'll try to answer correctly. Have a good day love.

Each level of energy transfer in an ecosystem or food chain is called a(n) trophic level

energy level

consumer level

food level

Answers

The correct answer is the first option. Each level of energy transfer in an ecosystem or food chain is called a trophic level. It comprises organisms that share the same function in the food chain in relation to the primary sources of energy.

The correct option is the first one

If an element, X, can form an oxide that has theformula X2O3, then element X would most likely be located on the Periodic Table in the same group as(1) Ba (3) In
(2) Cd (4) Na

Answers

Answer: (3) In

Explanation: As the given compound is $X_2O_3$ , it can be said that X has a valency of 3.

1)Barium (Ba): Atomic no: 56: $Xe6s^2$ : In order to complete its octet, it needs to donate 2 electrons, and thus the valency is 2.

2) Cadmium (Cd) : Atomic no: 48: $Kr5s^24d^(10)$ : In order to complete its octet, it needs to donate 2 electrons, and thus the valency is 2.

3) Indium (In): Atomic no: 49: $Kr5s^25p^(1)$ : In order to complete its octet, it needs to donate 3 electrons, and thus the valency is 3.

4) Sodium (Na): Atomic no: 11: $Ne3s^1$ : In order to complete its octet, it needs to donate 1 electron, and thus the valency is 1.

So the given element could only belong to the group containing Indium (In) as all the elements in the same group exhibit similar valency.

In! This is becasue it has a valency of 3

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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