Answether: the second one
Explanation:
Answer:
13-b
Explanation:
because 13-b is close to a and 12
___3% H2O2 (mass/vol)
<span>a) mass bought = 3g/100ml * 250 ml = ?? g H2O2 </span>
<span>b) moles / 0.250 liter = (?? g H2O2 / MW H2O2 g/mole) / 0.250 liter = ??M </span>
<span>Plug and SOLVE </span>
<span>Basic mathematics is a prerequisite to chemistry – I just try to help you with the methodology of solving the problem.
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<h3>
Option D(Last) :- </h3>
<em>The</em><em> charge on the nucleus is constant</em>.
<h3>Explanation:-</h3>
<em>The number of inner shell electrons being constant causes the shielding effect to remain constant across a period</em>
Lemme Follow and Mark brainliest..
<h3>Thank you:)</h3>
The anwer roght here is the last one d. 0.0556 mol. The next procedure says why this is right:
<span>3.35 x 10^22 atoms x (1 mol / 6.02 x 10^23 atoms) = 0.0556 mol
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I hope this can help you greatly