CHEMISTRY HIGH SCHOOL

Which of the answer choices accurately describes a trend that occurs when moving left to right across periods?(Select all that apply.)

reactivity increases
atomic radius increases
atomic mass increases
valence electrons decrease

Answers

Answer 1
Answer: atomic radius is the correct answer

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The sedimentary rock formed when water deposits tiny particles of clay in very thin flat layers is called?a.gymsum
b.shale
c.limestone
d.calcite

Answers

the sedimentary rock formed when water deposits tiny particles of clay in very thin flat layers is called limestone.
b.Shale
also the best to skip across the river

Which solution reacts with LiOH(aq) to produce a salt and water?

Answers

2 LiOH + H₂SO₄= 2 H₂O + Li₂SO₄

is sulfuric acid ( H₂SO₄) producing H₂O and Li₂SO₄ ( Lithium sulfate)

hope this helps!

According to the arrhenius theory an acid is a substance that

Answers

The Arrhenius theory established that acids and some bases: dissociate giving rise to ions.

What is the Arrhenius theory?

Arrhenius's theory was a theory of acids and bases formulated on the basis of his theory of ionization of substances in aqueous solutions.

Principles of the Arrhenius theory

  • Acid substances are those that dissociate into hydrogen ions in aqueous solution.

  • Basic substances are those that dissociate into hydroxyl ions in aqueous solution.

Therefore, we can conclude that the Arrhenius theory explains that the characteristic properties of aqueous solutions of acids are due to hydrogen ions.

Learn more about the Arrhenius theory here: brainly.com/question/3920636

Answer:

According to the theory, an Arrhenius acid is a substance that gives hydrogen ion, H^(+) (or protons) as the only positively charged ions, when dissociated in water.

Explanation:

What this means is that acids increase the concentration of protons in water to form hydronium ions,as opposed to the idea that there aren't free hydrogen cations floating around in aqueous solution.

The Arrhenius definitions of acidity and alkalinity are restricted to aqueous solutions and refer to the concentration of dissolved ions.

A solution of h2so4(aq) with a molal concentration of 6.80 has a density of 1.318 g/ml. what is the molar concentration of this solution?

Answers

The molalconcentration of the solution is 5.38 M.

The molal concentration of sulphuric acid = 6.80 m

The density of the solution = 1.318 g/ml

Mass of the sulphuric acid in the solution is,

= 6.80 * 9.80

=666.4 \: g

The mass of sulphuric acid present in the solution is 666.4 g.

Let the mass of the solvent in which sulphuric acid is dissolved be 1000 grams.

So the total mass of the solution is,

= Mass of solvent + Mass of sulphuric acid

= 666.4 \: + \: 1000

= 1666.4 \: g

The total volume of the solution is,

= (1666.4 * 1)/(1.318 * 1000)

= 1.264 \: L

The volume of the solution is 1.264 liters.

The molal concentration of this solution is,

= (6.80)/(1.264)

= 5.38 \: M

Therefore, the molal concentration of the solution is 5.38 M.

To know more about molarity, refer to the below link:

brainly.com/question/16587536

#SPJ4

What is the diffrence between acidic and basic solutions in working with redox reactions?

Answers

In acidic solutions you have H+ but in basic solutions you have OH-.
You need know that for to balance the reaction.

What is the ph of a solution with [H+]=3.3x10

Answers

pH=-log[H⁺]

That means that the pH=-log(3.3×10)=-1.52

I hope this helps.  Let me know if anything is unclear.
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