Answer: The empirical formula is 
Explanation:
Mass of Pb = 4.33 g
Mass of O = (5.00-4.33) g = 0.67 g
Step 1 : convert given masses into moles
Moles of Pb =
Moles of O =
Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.
For Pb = 
For O = 
The ratio of Pb O= 1: 2
Hence the empirical formula is
Answer:
carbon-14
Explanation:
becouse protons and neutrons are nagetivly charged
Because you need oxygen in your blood stream and it revives cells as it travels through.
Answer: 334.6 moles of O, 167.3 moles as O2
Explanation:
20.15x10^25/6.02214076x10^23 = 334.6 as atoms, 167.3 as O2
When blue vitriol is heated, those water of crystallization escape out of the crystal and what's left is anhydrous copper sulphate or simply CuSO4, without any water of crystallization.
