I believe that A is the answer. :)
300g because it’s more water to heat, meaning how easy would it be to boil a cup of water? Easy. What about a pool? See what I mean, bigger the area lesser the warmth it gets.
<em>1 troy ounce is equal to 0.0685714 pound.</em>
<em>1 pound is equal to 14.5833 troy ounces.</em>
14.5833 x 1795 = 26177.0235
1 pound of gold is approximately $26177.03
<u>Hopefully that helped! :)</u>
10. would be b. lithium because it is in the same column as sodium and thus they share same number of VE and thus similar stability which means they will have similar chemical properties.
11. would be c. 2 valence electrons. Easy way to know this is from the column it is in. Since it is in the second column, it will have two VE.
<span> Ksp = [Ba2+][CO32-] = (9.0 X 10⁻⁵)² = 8.1 X 10</span>⁻⁹
