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3 years ago

What is a cation and where can you find it on the periodic table?

Chemistry

1 answer:

Maslowich3 years ago

4 0

Answer:

A cation is an ion with fewer electrons than protons. Therefore, it has a positive charge. The electric charge on a proton is equal in amount to the charge on an electron. Anions are atoms or radicals (groups of atoms), that have gained electrons. Since they now have more electrons than protons, anions have a negative charge. Halogens always form anions, alkali metals and alkaline earth metals always form cations. Most other metals form cations (e.g. iron, silver, nickel), whilst most other nonmetals typically form anions (e.g. oxygen, carbon, sulfur).

Explanation:

An anion and cation cannot be specifically found on the periodic table.

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What kind of applications are there for the ph scale?

VashaNatasha [74]

Answer:

Applications of a ph scale

It can be used in a wide variety of applications

- ph scale can be used in agriculture

- it can be used in treatment of waste water

- it can be used in industrial processes

- it can be used in environmental monitoring

- it can also be used in researches and development

Explanation:ph scale is a used to measure the acidity or alkalinity of a given solution

7 0

4 years ago

How many valence electrons does it have?<br><br> pls answer thank you

zysi [14]

Answer:

One.

Explanation:

this is the structure of lithium which has valency 1 .Valency means no.electrons present in outermost shell or needed electrons to complete octet

5 0

3 years ago

A 75.0 g sample of dinitrogen monoxide is confined in a 3.q L vessel. What is the pressure( in atm) at 115 celsius

Nonamiya [84]

Data Given:
Pressure = P = ?

Volume = V = 3.0 L

Temperature = T = 115 °C + 273 = 388 K

Mass = m = 75.0 g

M.mass = M = 44 g/mol

Solution:
Let suppose the Gas is acting Ideally. Then According to Ideal Gas Equation,
P V = n R T
Solving for P,
P = n R T / V ------ (1)
Calculating Moles,
n = m / M

n = 75.0 g / 44 g.mol⁻¹

n = 1.704 mol

Putting Values in Eq. 1,

P = (1.704 mol × 0.08205 atm.L.mol⁻¹.K⁻¹ × 388 K) ÷ 3.0 L

P = 18.08 atm

7 0

3 years ago

If 3.0 moles of hydrogen react, how many grams of nitrogen will be used? Round your answer to the nearest whole number. N2 + 3H2

Iteru [2.4K]

Answer:

28g

Explanation:

Given parameters:

Number of moles of hydrogen = 3moles

Unknown:

Mass of nitrogen used = ?

Solution:

To solve this problem, let us establish the balanced reaction equation first;

N₂ + 3H₂ → 2NH₃

From the balanced reaction equation;

3 mole of H₂ will combine with 1 mole of N₂

Now,

Mass of Nitrogen = number of moles x molar mass

Molar mass of N₂ = 2(14) = 28g/mol

Mass of Nitrogen = 1 mole x 28g/mole = 28g

8 0

3 years ago

Which term describes this reaction? upper c upper h subscript 3 upper b r (a q) plus upper o upper h superscript minus (a q) rig

Veronika [31]

The reaction is a substitution reaction since bromide ion was replaced by hydroxide ion.

<h3>What is a chemical reaction?</h3>

A chemical reaction is a change which results in a the permanent rearrangements of the atoms and constituents of a substance such that new substances are formed.

The given reaction is a as follows:

$CH_3Br (aq) + OH^{-} (aq) \rightarrow CH_3OH (aq) + Br^{-} (aq) \\$

Bromide ion was replaced by hydroxide ion.

Therefore, the reaction is a substitution reaction.

Learn more about chemical reactions at: brainly.com/question/16416932

6 0

2 years ago