Answer:
the answer is b if not c hope this helps
Explanation:
Explanation:
accuracy measurements are important because precise amount are required for reaction to take place
Gas and liquid. Both have particles that are able to move around
A covalent bond is a bond in which electrons are shared. In an ionic bond, electrons are completely transferred. In this case phosphate ion (PO4)-3 is covalent which means that C and D cannot be the correct answer. Additionally, since the charge is on the oxygen atoms due to the bonding with phosphorus, we can say that the charge is on the entire ion and not just on the phosphorus atom. Therefore the answer is A.
Answer:
Formula of oxide is 
Explanation:
The given compound consists of Fe and O.
So, mass of oxygen in sample = (mass of sample) - (mass of Fe in sample)
= (6.285 g ) - (4.396 g)
= 1.889 g
Molar mass of O = 16 g/mol and molar mass of Fe = 55.845 g/mol
So, ratio of number of moles of Fe and O (Fe : O)
= 
= 0.0787 : 0.118
= 
= 1 : 1.5
= 2 : 3
So, formula of oxide is
