Answer:
Copper - Gold are below Hydrogen and lean to the least reactive end. All of the elements above Hydrogen in the reactivity series will displace Hydrogen atoms from an acid during a reaction.
The answer is B, Let me know if you get it right!
Answer: it’s the first one ☝️
Mass NEVER changes
Answer:
Explanation:
Step 1
The question is based on the concept of PH and pOH calculations.
pH is defined as negative logarithmic of hydronium Ion concentration.
while pOH is defined as negative logarithmic of hydroxide ion concentration of the solution.
Step 2
[H+] = 7.7*10-7 M
pH = -log[H+]
= -log ( 7.7*10-7 )
= 6.12
Step 3
pOH = 14 - pH
= 14 - 6.11
= 7.89
<span>((P1V1/T1)=(P2V2/T2))</span>
