The concentration 12 g/L means there are 12 g of solute present in__________of solution.

Answers

Answer 1

Answer: 12 because the beach is blue and yea

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How does bohrs model agree with Thomson model

Answers

Bohr's Model agree with Thompson's model because Bohr concluded that packets of energy are absorbed or emitted by the atoms when an electron changes shell. Thompson's conclusion states that atoms have small, negatively charged particles (referring to Electrons) as part of their internal structure.

Answers:

Bohr's model agrees with Thompson's model as both hold the fact that there are three sub=atomic particles which makes up an atom and there are equal number of protons and electron in a neutral atom

Explanation:

Bohr's model describes an atom as a planetary like shape in which the electrons revolve round the nucleus which is composed of protons and neutrons.

Thompson's model states an atom as a sphere which is composed of electrons surrounded by positively charged ions.

The primary unit of length in the metric system is the ?

Answers

meter is the primary unit of length in the metric system.

kg (killigram) for mass
L (litter) volume
m (meter) length

What is the (Ht] in a solution if the [OH'] = 5.42 x 10^-5 M?

Answers

The [H+] in the solution is found using the Kw expression: Kw = [H+][OH-]. Since Kw is known and [OH-] is given, [H+] can be calculated.

The concentration of hydrogen ions ([H+]) in a solution can be determined using the equilibrium constant for water (Kw). Kw is the product of the concentrations of hydrogen ions and hydroxide ions ([OH-]) in the solution. At 25°C, Kw has a constant value of 1.0 x 10^-14. Thus, if the [OH-] concentration in the solution is known, the [H+] concentration can be calculated by dividing Kw by [OH-]. In this case, the [OH-] is given as 5.42 x 10^-5 M, so [H+] can be found by dividing 1.0 x 10^-14 by 5.42 x 10^-5, which gives a value of 1.84 x 10^-10 M. Therefore, the (Ht] in the solution is 1.84 x 10^-10 M.

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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.

PLEASE HELPPPPP Antimony exists naturally as 2 isotopes. Antimony-121 has a mass of 120.9038 amu and an abundance of 57.30%. Determine the mass of the other isotope, antimony-123 knowing the average atomic mass of the element is 121.80 amu.

Answers

Answer: 1.6.905.x2.00=amu

Explanation:

if you multiply the atomic mass x 2.00 it will give you 1.6.905x2.00Amu your welcome

If the Kb of a weak base is 4.6 × 10-6, what is the pH of a 0.32 M solution of this base?

Answers

Assuming that the given base is a weak monoprotic base, the pH of the solution can be calculated as follows:

Write the balanced reaction and ice chart:

BOH --> OH- + B+

i 0.32 0 0
c -x x x
e 0.32-x x x

Kb = x^2/ (0.32-x)
x = 1.21x10^-3 = [OH-]
pOH = -log[OH-] = -log[1.21x10^-3] = 2.917
pH = 14 - pOH = 14 - 2.917 = 11.08

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