Answer:
HCl acts as an excess reagent
Explanation:
The reaction equation is;
PbO + 2HCl → PbCl2 + H20
Number of moles of PbO = 13g/223.2 g/mol = 0.058 moles
Since the mole ratio is 1:1, 0.058 moles of PbCl2 is produced
Number of moles of HCl = 6.4 g/36.5g/mol = 0.175 moles
2 moles of HCl yields 1 mole of PbCl2
0.175 moles yields 0.175 moles * 1/2
= 0.0875 moles of PbCl2
Hence; PbO yields the least number of moles of product so it is the limiting reactant and HCl is the reactant in excess
360.18 K is the Kelvin temperature to which 10.0 L of a gas at 27 °C would have to be heated to change the volume to 12.0 L.
Explanation:
Data given:
Initial volume of the gas, V1 = 10 litres
Initial temperature of the gas, T1 = 27° C or 273.15+27 = 300.15 K
Final volume of the gas obtained, V2 = 12 Litres
final temperature to obtain the above volume, T2 =?
temperature value in Kelvin
Applying Charles' Law to the data given,
rearranging the equation to get T2,
T2 =
Putting the values in the equation:
T2 =
T2 = 360.18 K
The gas will be heated at the temperature of 360.18 K to get its volume changed to 12 litres.
The balanced chemical equation representing the reaction of ammonia with hypobromite is:
The mass of =1.69mg
Moles of =
Calculating the moles hypobromite that would react with :
Volume of hypobromite required for titration = 1.00 mL
Molarity of hypobromite solution =
Answer:
- The chemical reaction is not balanced. There is two oxygens on the reactant's side while there's only one oxygen on the products side.
- I would not say it's following the law of conservation of mass as it's not a balanced equation.
- To balance this equation, you would need to add the coefficient of '2' to Magnesium (Mg) on the reactants side, and add the coefficient of '2' to the products side. This would make it so that there's 2 Mg's and 2 O's on both the reactant's side and products side.
edit: I hope this helped you in some way. ^^