Answer:
A. AlO
Explanation:
The empirical formula of a compound is the simplest possible formula giving the ratio of atoms in a molecule of the compound.
We know that Aluminium forms 
and oxygen forms 
.
As such the formation of the ionic compound between a metal and non-metal results into 
.
The empirical formula is as follows:
Element Aluminium Oxygen
% composition
by mass 26.98 16.0
mole ratio 26.98/26 16/16
= 1.04 = 1
divided by the
smallest number 1.04/1 1/1
1.04 1
The empirical formula is AlO
Answer:
The answer is 37amu
Explanation:
We are given:
Chlorine-35: atomic mass =35 amu and percent abundance =75.5% ≡ 0.755
Chlorine-37: atomic mass = x amu and percent abundance =24.5% ≡ 0.25
From table, relative atomic mass of Chlorine is 35.5
⇒(0.755 × 35) + (24.5 × x) = 35.5
26.402 + 24.5x = 35.5
∴ x = 9.075 ÷ 24.5 = 0.37 ≡ 37.
∴ mass of Chlorine 37 = 37amu
Answer:
Molarity of potassium chloride is:
A. 1.0 M
Explanation:
Molarity is used to express the concentration of the solution.It is defined as the moles of solutes per liter volume of solution.It is denoted by M.
Here'n' is the number of moles. It can be calculated using formula:
given mass=30 gm
Molar mass of KCl = mass of K+mass of Cl
= 39.098+34.45
= 74.55 g
n = 0.402 moles
M=1.00 M
So molarity of potassium chloride is 1.00 M
Answer:250 and your matthew sister
Answer:
for the continental drift one (slide 13) the answer is large <u>piece </u> for the second one it's
continents then <u>separated</u>
<u />
Explanation:
