Answer:
Element X has valency 2 while Y Valency 2, element Y has high tendency of gaining electrons for its stability thus the compound formed will be B
elements X is positively charged while Y will be negatively charged
The third one is correct, not sure abt another one
<span>the earth's temperature will continue to rise which will increase the amount of sea ice that is melting
hope this helped</span>
Simple dimensional analysis.
okay so youll need a periodic table to look up the molar mass. youll be given either an amount of grams or moles.