Answer:
5.81 moles
Explanation:
To find the number of moles (n) in 3.5 x 10²⁴ molecules of methane gas, we divide the number of molecules by Avagadro's number (nA). That is,
n = number of molecules ÷ 6.02 × 10²³
According to this question, 3.5 x 10^24 molecules of methane gas was given, hence,
n = 3.5 × 10²⁴ ÷ 6.02 × 10²³
n = 3.5/6.02 × 10(24 - 23)
n = 0.5814 × 10¹
n = 5.81 moles
Answer:
It is basic and has a pH of 9.8.
Explanation:
pOH = 4.2
we will determine its pH.
pOH + pH = 14
pH = 14 - pOH
pH = 14 - 4.2
pH = 9.8
According to pH scale the the pH lower than 7 is consider acidic while pH of seven is neutral and pH greater than 7 is basic.
The given solution has pH 9.8 it means it is basic.
<span>A </span>sample<span> of </span>grape juice has<span> a </span>hydroxide ion concentration<span> of </span>1.4<span> × </span>10-10 M<span> What is the</span>concentration<span> of </span>hydronium ion<span>? __x 10 x^-5 </span>M. Ask for details; Follow ... Unlock Verified Answers andget<span> help from subject experts. ... The relation between </span>hydroxide ion<span> (OH-) and </span>hydronium ion<span> (H3O+) is given by many things</span>
Answer:
Nitrogen
Explanation:
Nitrogen present 78% in the earth's atmosphere
Some parts of the planet undergo very little seasonal change due to their proximity to the equator and the poles. This means that their position relative to the sun and the earth's rotation varies hardly at all.
