the moles of magnesium does the sample contain is 2.469 moles
calculation
moles of Mg= mass of Mg /molar mass of Mg
mass of Mg = 60.0 g
From periodic table, the molar mass of Mg =24.3 g/mol
The moles of mg is therefore= 60.0 g / 24.3 g/mol = 2.469 moles
Kinetic and potential energy, are the two main types of energy! Hope this helps:)
Answer:
C6H14O3F
Explanation:
The first step is to divide each compound by its molecular weight
Carbon
= 39.10/12
= 3.258
Hydrogen
= 7.67/1
= 7.67
Oxygen
= 26.11/16
= 1.63
Phosphorous
= 16.82/31
= 0.542
Flourine
= 10.30/19
= 0.542
The next step is to divide by the lowes value
3.258/0.542
= 6 mol of C
7.67/0.542
= 14 mol of H
1.63/0.542
= 3 mol of O
0.542/0.542
= 1 mol of P
0.542/0.542
= 1 mol of F
Hence the molecular formula is C6H14O3F
Answer:
the first one which is A
Explanation:
the burning of fossil fuels causes both air pollution and water pollution
