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3 years ago

Which condition is indicated by nervous tension, mood swings, headaches, bloating, and irritability?

1 answer:

4 0

The best and most correct answer among the choices provided by your question is the third choice or letter C.

Premenstrual syndrome (PMS) has a wide variety of symptoms, including mood swings, tender breasts, food cravings, fatigue, irritability and depression. It's estimated that as many as 3 of every 4 menstruating women have experienced some form of premenstrual syndrome. Symptoms tend to recur in a predictable pattern.

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Write a short historical account of the discovery of the Avogadro’s number. In this account, include the roles of Gay-Lussac, Av

nikklg [1K]

It was named Avagadro number for the reason that it was discovered by Amadeo Avagadro, it was named after his last name. The one who in reality initially evaluated the real number of particles in a given substance, was Josef Loschmid. Avagadro was a legal counselor who had an enthusiasm for it, and the reason the number is named after him was a direct result of a French physicist named Jean Baptiste Perrin. Perrin utilized the term as a result of Avagadro's enthusiasm for Brownian movement. What Avagadro had done was assembled everything that researchers had found to help clarify the varieties that existed amongst iotas and atoms. The mole unit is short for the German word molekulargewicht. It was to some degree an aggregate push to build up the idea. Every individual that is said to have found it, is an alternate individual, however these four individuals are the most pertinent

8 0

3 years ago

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For the net reaction: 2AB + 2C → A2 + 2BC, the following slow first steps have been proposed. AB → A + B 2C + AB → AC + BC 2AB →

puteri [66]

This is an incomplete question, here is a complete question.

For the net reaction: 2AB + 2C → A2 + 2BC, the following slow first steps have been proposed.

(1) AB → A + B

(2) 2C + AB → AC + BC

(3) 2AB → A₂ + 2B

(4) C + AB → BC + A

What rate law is predicted by each of these steps?

Answer : The rate law expression for the following reactions are:

(1) $\text{Rate}=k[AB]$

(2) $\text{Rate}=k[C]^2[AB]$

(3) $\text{Rate}=k[AB]^2$

(4) $\text{Rate}=k[C][AB]$

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

The general reaction is:

$A+B\rightarrow C+D$

The general rate law expression for the reaction is:

$\text{Rate}=k[A]^a[B]^b$

where,

a = order with respect to A

b = order with respect to B

R = rate law

k = rate constant

$[A]$ and $[B]$ = concentration of A and B reactant

Now we have to determine the rate law for the given reaction.

(1) The balanced equations will be:

$AB\rightarrow A+B$

In this reaction, $AB$ is the reactant.

The rate law expression for the reaction is:

$\text{Rate}=k[AB]$

(2) The balanced equations will be:

$2C+AB\rightarrow AC+BC$

In this reaction, $C$ and $AB$ are the reactants.

The rate law expression for the reaction is:

$\text{Rate}=k[C]^2[AB]$

(3) The balanced equations will be:

$2AB\rightarrow A_2+2B$

In this reaction, $AB$ is the reactant.

The rate law expression for the reaction is:

$\text{Rate}=k[AB]^2$

(4) The balanced equations will be:

$C+AB\rightarrow BC+A$

In this reaction, $C$ and $AB$ are the reactants.

The rate law expression for the reaction is:

$\text{Rate}=k[C][AB]$

7 0

4 years ago

Convert the following: 4.6L(liters) to ml(milliliters).

Minchanka [31]

Answer:

Explanation:

6 0

3 years ago

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2A1 + 3Cl2 → 2AICI: a) How many moles of AICIz form when 3.2 mol of Cl2 reacts?

crimeas [40]

Answer:

2.13 moles of AlCl3 are produced from 3.2 moles of Cl2

Explanation:

Moles : The amount of substance that contain as many particles as present in 12 grams of C-12.

The balanced equation for the reaction is :

$2Al +3Cl_{2}\rightarrow 2AlCl_{3}$

This reaction shows the following :

2 mole Al = 3 mole Cl2 = 2 mole AlCl3

In question we are asked to calculate the moles of AlCl3 produced from Cl2

So, we will use only Cl2 andAlCl3 moles

3 mole Cl2 = 2 mole AlCl3

1 moles of Cl2 will give =

$\frac{2}{3}$ of AlCl3

3.2 moles of Cl2 will give =

$\frac{2}{3}\times 3.2$ of AlCl3

= 2.133 moles

7 0

3 years ago

Why critical thinking and skepticism are important to scientific inquiry?

ss7ja [257]

Critical thinking and skepticism are important to scientific inquiry because they help scientists to thoroughly examine all evidence before making their conclusions, this allows them to avoid errors. Critical thinking refers to the attitude of asking questions constantly, thoroughly examining information and evidence and making valid conclusions. While skepticism refers to an attitude of doubt. These attitudes are very important in scientific investigations; it helps scientists to be able to provide good evidence on which they base their conclusions.

5 0

4 years ago

Read 2 more answers