Answer:
An atom is made up of protons, neutrons and electrons.
Answer:
Diamond - E
Sugar- C
Milk - M
Iron- E
Air- M
Sulfuric Acid- C
Gasoline - M
Electricity- X
Krypton- E
Bismuth - E
Uranium - E
Kool-Aid -M
Water - C
Alcohol - C
Pail of Garbage - M
Ammonia - C
Salt - C
Energy - X
Gold - E
Wood - M
Bronze - M
Ink - M
Pizza - M
Dry Ice - C
Baking Soda - C
Explanation:
An element is the smallest part of a substance that is capable of independent existence. An element cannot be broken down into any other substance. Krypton, Bismuth etc are all elements.
A compound is a combination of two or more elements which are chemically combined together e.g NH3, CO2 etc.
A mixture is any combination of substances that are not chemically combined together. E.g Pizza, milk etc
Answer:
155g
Explanation:
To solve this problem, we have to derive the number of moles of the element given from the number of atoms first.
Number of atoms = 3.01 x 10²⁴ atoms
From mole concept;
6.02 x 10²³ atoms is found in 1 mole of a substance
3.01 x 10²⁴ atoms of P will contain = 5moles of P
Now;
Mass of P = number of moles x molar mass
Molar mass of P = 31g/mol
Mass of P = 5 x 31 = 155g