Maria works in a hardware store. a bin of aluminum nails and a bin of iron nails are knocked over, and the nails get mixed up. both sets of nails are the same color and size.

what makes separating the nails a fairly easy job?

a) aluminum is heavier and iron is lighter.
b) iron settles in water, while aluminum floats.
c) aluminum is magnetic, and iron is non-magnetic.
d) iron is magnetic, and aluminum is non-magnetic

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.