The theoretical yield and percent yield of hydrogen if 0.27 g of H2 collected is calculated as follows
write the reaction equation
that is Fe + Hcl = H2 + FeCl2
calculate moles of Fe = mass/molar mass = 8.85 g/56 g/mol =0.158 moles
by use mole ratio between Fe : H2 which is 1:1 the theoretical moles of hydrogen = 0.158moles
the theoretical mass is therefore = moles x molar mass
= 0.158 mol x2g/mol =0.316 grams
% mass = actual mass/ theoretical mass x 100
= 0.27/0.316 x100 = 85.4 %
Answer:
this would be an oxidation-reduction reaction
Answer:
D) saturated fat
Explanation:
Saturated fat -
It is a form of fat , where saturation is present , i.e. , presence of single bonds , it is a type of very unhealthy fat .
Butter , red meat , coconut oils and palm are rich in saturated fat , and are mostly in solid state at room temperature .
These fats often tends to be collected in the walls of arteries , and , can act as a restriction to the flow of blood .
Hence , the correct option for the given information of the question is saturated fat .
What pH scale number represents a neutral.
The answer is 7