Answer:
0.077M is the concentration of the hydroxyl ion
Explanation:
If 7.35 cm3 of this base is take and diluted to 147 cm3, then what is the concentration of the hydroxyl ion?
Use the dilution equation:
M1V1 = M2V2
M1 * 147cm³ = 1.5 M * 7.35 cm³
M1 = 1.5 M * 7.35 cm³ / 147 cm³
M1 = 0.077 M
<h3> 0.077M is the concentration of the hydroxyl ion</h3>
How many moles of hydroxyl ion are there in the 7.35 cm3?
1000 cm³ contains 1.5 mol OH- ions
7.35 cm³ contains : 7.35 cm³ / 1000 cm³ *1.5 mol
= 0.011025 mol
<h3>Answer correct to 2 significant digits = 0.011 mol OH- ions.</h3>
Everything is made of molecules so I don’t think there would be life without molecules..
The answer is D I hope this helps you !
Magnesium and I think its MG12 for the other part
