Awhite powder is known to be a mixture of magnesium oxide and aluminum oxide. 100cm3 of 2moldm-3 naoh(aq) is just sufficient to cause the aluminum oxide in x grams of the mixture to dissolve. the reaction occurring is al2o3 + 2oh- + 3h2o > 2al(oh)4- 800cm3 of 2 moldm-3 hcl (aq) is just sufficient to cause all of the oxide in x grams of the mixture to dissolve. the reactions occurring are al2o3 + 6h > 2al3+ + 3h2o and mg2+ +h2o. how many moles of each oxide are present in x grams of the mixture ?
a. aluminium oxide 0.05, magnesium oxide 0.25
b. aluminium oxide 0.05, magnesium oxide 0.50
c. aluminium oxide 0.10, magnesium oxide 0.25
d. aluminium oxide 0.10, magnesium oxide 0.50

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

can you attach the

i think that the answer is c