Answer:
A. a magnet
Explanation:
Iron fillings could be separated from sand using a magnet
Answer:
A prediction that a tire'a air pressure will increase if the tire's temperature is raised.
Explanation:
Answer:
there is no change because when you remove NO it will make the reaction balance
Answer:
b. Gas particles are far apart so they are easy to compress together.
Explanation:
75.0 mL in liters:
75.0 / 1000 => 0.075 L
1 mole -------------------- 22.4 L ( at STP)
( moles Hg) ------------- 0.075 L
moles Hg = 0.075 x 1 / 22.4
moles = 0.075 / 22.4
= 0.00334 moles of Hg
Hg => 200.59 u
1 mole Hg ----------------- 200.59 g
<span>0.00334 moles Hg ----- ( mass Hg )
</span>
mass Hg = 200.59 x 0.00334 / 1
mass Hg = 0.6699 / 1
= 0.6699 g of Hg