A pure substance is matter that consists of matter with a composition that
2 answers:
Is constant (matter that has a composition that is the same everywhere)
Answer:
A Pure substances is a substances that are made of only one type of atom or molecule and it possesses the following physical properties
1. well-defined melting
2. Well-defined boiling points.
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There should be 22 figures .
Ph= - log [H+] = -log 1.00× 10-7 = -(log 1 + log 10-7) = -( 0 + (-7log 10) = -( -7) = 7
Mass......................
They are all correct good job bud I hope it helps and good luck
Answer:
1.94
Explanation:
moles = mass/Mr so you have 3.889 moles of aluminium, but because the ratio in the equation is 2:1 you need to halve it.
