What is true about blood alcohol concentration?

Answers

Answer 1

Answer: Blood alcohol concentration is the most commonly used measurement for alcohol intoxication for legal or medical purposes. It measures the amount of alcohol in the bloodstream. It is expressed in percent alcohol in blood. Hope this answers the question. Have a nice day.

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Need a correct answer fastHow many moles of solute are contained in a 500.0 milliliter solution that has a concentration of 0.35 M?

Which of the following is TRUE about ideal gas particles?A.They move in random directions.
B.They are very large.
C.They have high intermolecular forces.
D.They have inelastic collisions.
E.They always move in straight lines.

Answers

Answer:

The answer is A.

Explanation:

Gasparticlesdonothaveafixedpositionorvolumesotheymoveinrandomspeedanddirections.

(CorrectmeifIamwrong)

Which answer best describes the potential energy diagram for a reaction that takes place in water, if the temperature of the surrounding water is lowered? a. the potential energy of the reactants is low; the potential energy increases gradually; it peaks, then decreases slightly.

b.the potential energy of the reactants is high; the potential energy decreases gradually; then increases slightly.

c. the potential energy of the reactants is low; the potential energy remains low; rapidly peaks, then rapidly falls.

d. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.

Answers

Answer:

d. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.

Explanation:

Potential energy is the term that refers to the energy stored in a body, which can be used for several different things, even if transformed into other types of energy, depending on the need that that body presents at the moment. If the body needs to move, for example, the potential energy is transformed into kinetic energy. If the body needs to heat up or cool down, the potential energy turns into thermal energy.

Based on this, we can conclude what happens to the potential energy of a reaction that occurs in water, when the temperature of the surrounding water is reduced. If the temperature is reduced, it means that the water is losing energy and the potential energy of the reagents is low; as a result, the potential energy gradually decreases; then it increases a little.

d. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.

Write a balanced equation for the reaction of NaCH3COO (also written as NaC2H3O2) and HCl.

Answers

The balanced equation is as follows:

$\boxed{{\text{NaC}}{{\text{H}}_3}{\text{COO}}+{\text{HCl}}\to{\text{NaCl}}+{\text{C}}{{\text{H}}_3}{\text{COOH}}}$

Further Explanation:

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

Displacement reactions:

These reactions are also known as replacement or metathesis reactions. These types of reactions occur when one of the reactant is replaced by the other one. Usually the more reactive element displaces the less reactive element. Both metals and non-metals can take part in displacement reactions.

Such reactions are generally expressed as follows:

${\text{A}}+{\text{B}}-{\text{C}}\to{\text{A}}-{\text{C}}+{\text{B}}$

Examples of displacement reactions are as follows:

(a) The reaction between copper metal and silver nitrate to form silver metal and copper nitrate as:

${\text{Cu}}+{\text{AgN}}{{\text{O}}_3}\to{\text{Ag}}+{\text{Cu}}{\left({{\text{N}}{{\text{O}}_3}}\right)_2}$

(b) The reaction between chlorine gas and potassium bromide to form potassium chloride and bromine gas as:

${\text{C}}{{\text{l}}_2}+{\text{KBr}}\to{\text{B}}{{\text{r}}_2}+{\text{KCl}}$

The steps to balance a chemical reaction are as follows:

Step1: Complete the reaction and write the unbalanced symbol equation.

In the displacement reaction, sodium acetate $\left({{\text{NaC}}{{\text{H}}_3}{\text{COO}}}\right)$ reacts with hydrochloric acid $\left({{\text{HCl}}}\right)$ to form NaCl and ${\text{C}}{{\text{H}}_3}{\text{COOH}}$ . The physical state of ${\text{NaC}}{{\text{H}}_3}{\text{COO}}$ , HCl, NaCl and ${\text{C}}{{\text{H}}_3}{\text{COOH}}$ is aqueous. The unbalanced chemical equation is as follows:

${\text{NaC}}{{\text{H}}_3}{\text{COO}}+{\text{HCl}}\to{\text{NaCl}}+{\text{C}}{{\text{H}}_3}{\text{COOH}}$

Step2: Then we write the number of atoms of all the different elements that are present in a chemical reaction in the reactant side and product side separately.

• On reactant side,

Number of sodium atom is 1.

Number of carbon atoms is 2.

Number of oxygen atoms is 2.

Number of hydrogen atom is 4

Number of chlorine atoms is 1.

• On product side,

Number of sodium atom is 1.

Number of carbon atoms is 2.

Number of oxygen atoms is 2.

Number of hydrogen atom is 4.

Number of chlorine atoms is 1.

Step3: Initially, we try to balance the number of other atoms of elements except for carbon, oxygen, and hydrogen by multiplying with some number on any side.

Sodium and chlorine atoms are balanced on both sides. Now the reaction is,

${\text{NaC}}{{\text{H}}_3}{\text{COO}}+{\text{HCl}}\to{\text{NaCl}}+{\text{C}}{{\text{H}}_3}{\text{COOH}}$

Step 4: After this, we balance the number of atoms of carbon and then hydrogen atom followed by oxygen atoms.

Carbon, hydrogen, and oxygen atoms are balanced on both sides. Now the reaction is,

${\text{NaC}}{{\text{H}}_3}{\text{COO}}+{\text{HCl}}\to{\text{NaCl}}+{\text{C}}{{\text{H}}_3}{\text{COOH}}$

Step5: Finally, we check the number of atoms of each element on both the sides. If the number is same then the chemical equation is balanced.

The balanced chemical equation is as follows:

${\text{NaC}}{{\text{H}}_3}{\text{COO}}+{\text{HCl}}\to{\text{NaCl}}+{\text{C}}{{\text{H}}_3}{\text{COOH}}$

Learn more:

1. Balanced chemical equation: brainly.com/question/1405182

2. Number of covalent bonds does nitrogen formed with its unpaired: brainly.com/question/5974553

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Chemical reaction and equation

Keywords: Balancing, displacement reaction, NaCl, CH3COOH, CH3COO, NaCH3COO, HCl, atoms, oxygen, carbon, hydrogen, chlorine.

The balance chemical equation is:

NaCH₃COO + HCl → NaCl + HCH₃COO

Make

Of the following, which has the highest entropy?NaCl(s)

NaCl(aq)

NaCl(l)

NaCl(g)

Answers

The higher the order, the lower the entropy. Solids are most orderly and gases are least orderly, with liquids and aqueous in between. That said, NaCl(g) would have the highest entropy.

Most ionic substances are soluble in water because water molecules are?

Answers

There exists the same question that has the following choices.

(1)nonpolar
(2)inorganic
(3)ionic
(4)polar

The correct answer is (4) polar. Water itself is polar. Ionic compounds are very polar, that is, one part is positively charged, the other negatively charged.

The atomic number is what?

Answers

Atomic number is a number of protons found in the nucleus of an atom of the element. Atomic number must be used in Chemistry and Physics always.

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