Answer:
Mass = 48 g
Explanation:
Given data:
Number of moles of H₂ react= 3.00 mol
Number of moles of O₂ react= 1.50 mol
Number of moles of water formed = 3.00 mol
Mass of oxygen react = ?
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
It is stated in given question when 1.50 moles of oxygen react 3.00 moles of water are formed. Thus, mass of 1.50 moles of oxygen is
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 1.50 mol × 32 g/mol
Mass = 48 g
Buffers - mixtures of conjugate acid and conjugate base at ±1 pH unit from pH = pKa. Resistant to changes in pH in response to small additions of H+ or OH-. ... Polyprotic acids - dissociation of each H+ can be treated separately if the pKa values are different
D. A disadvantage of nuclear power is that waste products are unsafe and hard to store. They must be stored for many hundreds of years before they becomes safe and easier to dispose of, and we currently don't have a good method of storing them in the meantime.
