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aleksandr82 [10.1K]
3 years ago
13

I need to know what a metal nonmetel and metalloid

Chemistry
2 answers:
Paul [167]3 years ago
4 0
Is this helpfull with the question you need on or not

Ghella [55]3 years ago
4 0

A metal is a solid material that usually has a hard surface. They are usually malleable, ductile, fusible, and shiny. They are also good conductors of electricity.


Nonmetals are materials that aren't metals, and have no similar properties with metals.


A metalloid is a material that has mixed properties of metals and nonmetals.

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Rainbow [258]

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What is the charge of an atom's nucleus of an atom has 20 protons, 23 neutrons, and 18 electrons?
Sidana [21]

Answer:

It would have a charge of +2.

Explanation:

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8 0
3 years ago
Read 2 more answers
A 1.67-g sample of solid silver reacted in excess chlorine gas to give a2.21-g sample of pure solid Agcl.The heat given off in t
kotegsom [21]

<u>Given:</u>

Mass of Ag = 1.67 g

Mass of Cl = 2.21 g

Heat evolved = 1.96 kJ

<u>To determine:</u>

The enthalpy of formation of AgCl(s)

<u>Explanation:</u>

The reaction is:

2Ag(s) + Cl2(g) → 2AgCl(s)

Calculate the moles of Ag and Cl from the given masses

Atomic mass of Ag = 108 g/mol

# moles of Ag = 1.67/108 = 0.0155 moles

Atomic mass of Cl = 35 g/mol

# moles of Cl = 2.21/35 = 0.0631 moles

Since moles of Ag << moles of Cl, silver is the limiting reagent.

Based on reaction stoichiometry: # moles of AgCl formed = 0.0155 moles

Enthalpy of formation of AgCl = 1.96 kJ/0.0155 moles = 126.5 kJ/mol

Ans: Formation enthalpy = 126.5 kJ/mol


6 0
3 years ago
Read 2 more answers
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