The percentage by mass of Oxygen in MgSO\(_4\).7H\(_2\)O is [ M\(_r\) of MgSO\(_4\).7H\(_2\)O = 246 ]

Lawrenceasuquo2025

1 year ago

That's wrong
%composition of O4=
16*4+7*16=176
176/246*100=71.5%

Youngboss_19

1 year ago

% Composition of O4 = molar mass of oxygen /
molar mass of MgSO4.7H20* 100%
64/246 *100
=26.02%.(A)
@ My School pls look into it because there's no option marked here .

Emuobonuvie1

4 months ago

its wrong the answer is A

Youngboss_19

1 year ago

% Composition of O² =mass of