Answer:
Option B is correct.
A buffer is best used in pH ranges from one unit below up to one unit above its pKa.
Explanation:
The ability of a buffer solution to maintain a nearly constant pH when small amounts of acids or bases are added to the solution is greatest at the pKa & reduces as the pH of the solution goes above or below the pKa. A rule-of-thumb is to use a buffer within 1 pH unit of the pKa to maximize its buffering capacity.
Hope this Helps!
Answer:
80°C
Explanation:
because I'm mixed temperature of watere
Answer: 59 grams
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Given: mass of hydrogen = 6.6 g
mass of oxygen = 52.4 g
Mass of products = Mass of hydrogen + mass of oxygen = 6.6 +52.4 = 59 g grams
Thus mass or reactant = mass of water
Mass of reactants = mass of products = 59 g
Thus the mass of water initially present was 59 g.
The correct answer is iron
Answer:
a property ( colour,hardness and boiling point)