Question

I completely bombed my test please help me understand. can you do these step by step. thank you so much!

Answer 1

Here is the Solution:

(1) which of the following statements about pressure is FALSE ? Pressure is a force exerted by the substance per unit area on another substance. The answer is option (O). All of the above statements are true. & We will use Boyle's law Pt Us = P2 V2 Pi= 1,00 atm V2 = PAX V2 P2= 3.25 atm P2 Vi = 0.500L U2 = 1.00 atm x 0.500h V2=2 3.25 atm V2 = 1 O. 154L (3). We need to find the total pressure of the system . Pressure (P4) = 984 torr Pressure (P2) = 345 torr Ptotal = Pit P2 Ptotal = (984 +345) torr P total = 1329 torr So total pressure will be 1329 tørr x 1 atm 760 torr = 1.75 atm

(4). (d). [CH₃ CH2OH has highest vapor pressure. Đ Because, CH3CH2OH has hydrogen bonding interactions which are stronger than either dipole-dipole or disperson forces (5). 2H2(g) + 029) -2H20 (8) from the equation, a moles of H₂ produus 2 moles of H₂O. We know that, at STP any ideal gas contains 22.4h volume. so, 1. 24 LH2 / 1 mol H2 / 2 mol H20 1/18.02 g H2O (22,4 LH2 (2 mol H2 1 mol H20 - 0.99 753 g H₂O OR = 10.998 g H20 L (6) N2 is reast soluble in water. - We already know that NaCl (sodium chloride) is I highly soluble in water And CH₃OH and NH 3 are polar compounds and N2 is non-polar since water is polar solvent . so, Na is reast soluble in water. Therefore option (C), N2 is correct !

(7) col has the highest boiling point. Because co experiences dipole- dipole interactions. (&). The molecular shape of silicon dioxide SiO₂ molecule is linear Because the two oxygens connected to the si by double bonds and there. are no lone pairs on the Si.. O— Si= 0

Thanks! :)