Chemistry Scavenger Hunt 50 items

[revelant]

thanks for message

[chemteacher]

a nonmetal

fluorine

[chemteacher]

1. anything. calculate the mass of h2SO4 = 98.1 g/mol adn that is avog. #

3. 1ml = 1cm3

10. 0.05M = 0.05 mol/L = how many grams are in 0.05 mol, add to 1L

14.anyhting that sinks in water.
16. NICKEL
17. Helium - balloon works great.

19. look for redox reactions

21. vinegar

22. SiO2; sand or glass

35. NaCl
37. copper, iron, nickel, zinc

38. helium - ie helium balloon like in a prevfious question.

8) 8) 8) 8) 8) 8) :lol: :lol: :lol:

[howard_wilner]

hey i have 1, 6, 12, 16, 21, 26, 36, 46

i need 8, 11, 30, 31, 41, 50 PLEASE i can help anyone who helps me thanks!!

Thanks, Howard Wilner

[jeffy]

8. A chemical equilibrium system containing at least two phases. Define equilibrium. Write a balanced equation representing the equilibrium.

At 0 deg.C water and ice are in equilibrium. One is in the liquid phase and one is in the solid phase.

The balanced equation is H20(l) = H20(s) (instead of the equals sign you need the back and forward equilibrium arrows)

Equilibrium happens when the reactants and products are present in unchanging proportions. The forward reaction (freezing in this case) and the reverse reaction (melting in this case) occur at the same rate when a system is in equilibrium.

[darsmit]

Originally Posted by jeffy

At 0 deg.C water and ice are in equilibrium. One is in the liquid phase and one is in the solid phase.

The balanced equation is H20(l) = H20(s) (instead of the equals sign you need the back and forward equilibrium arrows)

Equilibrium happens when the reactants and products are present in unchanging proportions. The forward reaction (freezing in this case) and the reverse reaction (melting in this case) occur at the same rate when a system is in equilibrium.

The question asks for a chemical equilibrium system. Water freezing/melting is a physical change and therefore does not qualify as CHEMICAL equilibrium.

[jeffy]

You're right darsmit. You're just like my teacher. (Don't take that as a bad thing. He's always telling me how great I am at giving answers to questions nobody asked!)

Right, I'll change my answer to copper metal added to aqueous silver nitrate solution. You get an equilibrium between solid copper, solid silver, silver nitrate solution and copper nitrate solution. I make that three phases.

Cu + 2AgNO₃ = Cu(NO₃)₂ + 2Ag

[robin]

Any sparingly soluble salt added to water will produce a two phase chemical equilibrium. e.g. Calcium carbonate in water.

[KathChem82]

can anyone please tell me which numbers are not answered yet? thanks! i'd really like to help.