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 2 years ago
#1: At STP, how many molecules of nitrogen gas are in 22.4 L?
A. 6.022 × 10^22
B. 6.022 × 10^23
C. 6.022 × 10^24
D. 6.022 × 10^25
**my answer: B
is that right?? @aaronq :)
 2 years ago
#1: At STP, how many molecules of nitrogen gas are in 22.4 L? A. 6.022 × 10^22 B. 6.022 × 10^23 C. 6.022 × 10^24 D. 6.022 × 10^25 **my answer: B is that right?? @aaronq :)

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iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#2: Molar mass is the molecular (formula) mass of any substance expressed in which of the following? A. moles B. grams C. kilograms D. liters **my answer: A is that right?

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1molar mass is expressed in gram per mole

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#3: Which of the following temperatures and pressures are used as standards for gases? A. 0°C, 1 atm B. 25°C, 1 atm C. 10°C, 1 atm D. 5°C, 2 atm **my answer; A or is it B?? ;/ idk im a bit conflicted :/

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0okay so what is #2 then? ;/

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1mass = unit of weight measurement

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0ohhh okay!! :) #4: Which of the following is NOT a measure of the amount of matter? A. mole B. molar mass C. molar volume D. STP **my answer; D is that right?

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1STP, standard temperature and pressure ALWAYS 25 celsius and 1 atm (760 torr/mm Hg)

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#5: Which of the following is equal to the number of particles in 18 grams of carbon12? A. 1.5 : 1 mole ratio B. 1.5 : 1 molar mass c. 1.5 moles D. 1 : 1.5 molar volume *my answer: B is that right? :/

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0wait so #3 is B. 25°C, 1 atm ??

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1yeah 3 is B. 5 is oddly worded, the only that makes sense is 1.5 moles because n=18g/12g/mol=1.5 moles

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#6: Which of the following substances has a molar mass of 208 g? A. P2O5 B. BaCl2 C. AlCl3 D. MgCl2 **my answer; B is that right? :)

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0okay!! so #5 is what then?? :/

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.15 would be 1.5 moles, C.

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0aweosme!! :) thx! #7: Who discovered the principle that equal volumes of gases at the same temperature and pressure contain the same number of particles? A. John Dalton B. Amedeo Avogadro C. Ernest Rutherford D. Jacques Charles *my answer: B is that right? :)

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1yep! my main man avogadro

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#8: What is the volume of 1.5 moles of gas at STP? A. 9.02 L B. 20.0 L C. 33.6 L D. 22.4 L **my answer; C is that right??

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0LOL thats hilarious!!! :P

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#9: You do an experiment in which you need 0.25 moles of tyrosine (C9H11NO3). How many grams must you weigh out? A. 45.3 g B. 90.5 g C. 181 g d. 272 g **my answer; A is that right? :)

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1this one you might not get

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#10: For an experiment, you need to dissolve 0.10 moles of NaCl in 1 liter of water. How much NaCl must you weigh out? A. 8.2 g B. 5.8 g C. 3.2 g D. 0.14 g **my answer: B to is it A?? :/

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0lol yeah i get it, cuz h202 is hydrogen peroxide, which is poisonous and would kill u haha my friend told me this b4 lol

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1hahaha wow, good stuff (Y)

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#11: A doctor prescribes 1,500 mg of glucosamine (C6H13NO5) per day for a person with osteoarthritis. How many moles of glucosamine does the patient take each day? A. 8.38 B. 8.38 × 10^3 C. 0.12 D. 1.79 × 10^3 **my answer: B is that right? haha and yeah ikr?? :) so is #10 right?? is it B? or is it A? :/

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#12: In a chemical reaction, you collect 500 mL of hydrogen gas at STP. How many moles of hydrogen gas did you collect? A. 22 B. 0.22 C. 0.02 D. 0.004 **my answer; C is that right?? and yayy :)

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#13: How many atoms are in 1.0 moles of xenon gas at STP? A. 2.2 × 10^23 B. 3.0 × 10^22 C. 3.0 × 10^24 D. 6.0 × 10^23 **idk this one :( do u get it?

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0#14: A chemical reaction produces oxygen gas. You collect 6.02 × 10^23 oxygen gas molecules at STP. What volume of oxygen gas did you collect? A. 2.8 L B. 5.6 L C. 11.2 L D. 22.4 L **my answer; D is that irhgt?? :)

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1for 13, you have to know that Xe(g) is not diatomic, so you know 1 mole = 6.022x10^23 atoms/molecules

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0annnndd last one!!! (which unfortunately i do not understand :(.... ) #15: A chemical reaction produces 5.6 L of nitrous oxide gas (N2O) at STP. What is the mass of the gas produced? A. 0.25 g B. 5.6 g C. 11 g D. 44 g ***idk :(

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0so 13 would be D. 6.0 × 10^23 ??

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0lol that was a good one :P and that kitty is so cute with the glasses and stuff!! =)

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1yes 13 is D, noble gases are ALWAYS unimolecular. uni=1

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0awesome! :)what about 15 tho?? and i found a good one hahaha :P i like this one :)

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1so for 15, find how many moles you produced, 1 mole of gas at STP = 22.414 L so moles = 5.6/22.414 then use that to find the grams with the molar mass of N2O moles= mass/molarmass mass = moles*molarmass

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1HAHA I've never seen that one, i like it

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0so is #15 A. 0.25 g?? and i found a kinda continued one of one u posted above :) and hahaa yeahh i like that one :)

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1"ALL THESE CHEM JOKES ARE BORON ME" LOL

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0and i liked this one too :P

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0okay!! :) thanks!! :) and lol that ones good :) and heres another one.. but its with... the one and only!!! PAtrick... STar!!!!

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1oh wait i added up the molar mass of N2O wrong i did NO2

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0okay!! haha thanks!! :D

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1:) no prob haha i haven't watched spongebob in like i don't even know, forever.

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0haha yeah same, but i love patrick!! :) i mean he lives in a rock.. how do u even find a hollowed out rock?? :) spongebob is awesome!! :)the best cartoon ever!! :) lol thanks again!! :D

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1it is so awesome, i liked the movie too! no problem at all!

iheartfood
 2 years ago
Best ResponseYou've already chosen the best response.0yeah!! haha i watched it a while ago but all spongebob is good and funny :)

aaronq
 2 years ago
Best ResponseYou've already chosen the best response.1agreed :) i'm gonna go, see ya !
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