Answer:
hope the answer helps that's all I know
Because water is able to dissolve in many things and most of this world is made out of water so no country or state doesn't have water, some have infected water with lead in them and others don't, but water can dissolve in salt, that's why they call it salt water and also tapped water where u put some mixtures in them to make it have flavor.
Answer:Density (ρ) = 7.1538461538462 kilo
Explanation:ρ =
m
V
=
9.3 gram
1.3 liter
= 7.1538461538462 gram/liter
= 7.1538461538462 kilogram/cubic meter
Answer:
Explanation:
Given parameters:
Mass of CuCl₂ = 10.5g
Mass of Aluminium = 12.49g
Unknown:
Limiting reactant = ?
Solution:
The limiting reactant is the reactant given in short supply. Such reactant determines and controls the extent of the reaction.
Once they are used up, the reaction ceases to progress.
To find such reactant, we need to have a balanced reaction equation and the number of moles of the reactants:
3CuCl₂ + 2Al → 3Cu + 2AlCl₃
number of moles =
Molar mass of CuCl₂ = 63.5 + 2(35.5) = 134.5g/mol
Molar mass of Al = 27
Number of moles of CuCl₂ = = 0.08moles
Number of moles of Al = = 0.46moles
From the balanced reaction equation;
3 mole of CuCl₂ combined with 2 moles of Al
0.08 mole of CuCl₂ will combine with = 0.05moles of Al
But the given amount of Al is 0.46moles which is in excess.
Therefore CuCl₂ is in the limiting reactant.
Beryllium because it's a metal which is in nature usually found as cations held together by delocalized electrons and there is also a trend on the periodic table which suggests that ionization energy increases from left to right across a period and decreases from top to bottom down a group