Physical because even thought the cake batter has been spilt it is still cake batter, its just on the floor now.Nothing has changed the chemical composition of it.
Answer:
I would say the answer would be B.
Explanation:
Answer:
<span>A 3.1 L sample of hydrogen at the same temperature and pressure contains the same number of molecules.
Explanation:
As we know ;"1 mole of any gas at STP occupies exactly 22.4 L of volume". Therefore, CO</span>₂ and H₂ gas having same number of moles (0.20 moles) will occupy exactly the same volume.
Now, converting moles into number of molecules,
# of Molecules = Moles × 6.022 × 10²³
Putting value of mole,
# of Molecules = 0.2 mol × 6.022 × 10²³ molecules.mol⁻¹
# of Molecules = 1.20 × 10²³ molecules
Hence, both gases will contain 1.20 × 10²³ molecules.
6.5-7.5 i believe was right
Answer:
-a nonmetal is a substance that lacks the characteristics of a metal.
-Seventeen elements are generally classified as nonmetals: most are gases (hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon and radon); one is a liquid (bromine); and a few are solids (carbon, phosphorus, sulfur, selenium, and iodine).