Questions asked by Shay

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• How many moles of O2 in 32.0 grams of O2 gas?
  
• How many moles of O2 in 40.0 grams of oxygen gas?
  
• What is the mass of 0.35 moles of oxygen gas molecules?
  
• What is the mass of two moles of oxygen gas(O2)?
  
• What is the number of Oxygen atoms in one mole oxygen gas molecules?
  
• What is GERD?
  
• An electron traveling at #5.6 xx 10^5 "m/s"# has an uncertainty in its velocity of #2.64 xx 10^(5) "m/s"#. What is the uncertainty in its position?
  
• How many orbitals do you think exist in a atom?
  
• What quantum numbers defines a shell?
  
• Is there a limit to the number of orbitals in a specific shell?
  
• What quantum number defines a subshell? How do we label each subshell? How many orbitals in each subshell?
  
• Which one have the longest wavelength, X-Ray, visible light, or microwaves?
  
• How many total orbitals in shell n=4? What is the relationship between the total number of shell and the quantum number n for that shell?
  
• Consider the following quantum numbers sets; determine if they can occur together to specify an orbital. If not indicate which rule has been violated?
  
• For the following pairs of electron transition, which produces the emission with longest wavelength. give rationale behind your answer? (a) n=3--> n=1 versus n=2 --> n=1 (b) 3p --> 2s versus 2p-->1s
  
• What causes Cholera and what does the causative agent do that makes us lose so much fluid so fast with this disease?
  
• What types of elements combine with each other will usually result formation of ionic bonding? Give an example.
  
• When magnesium metal reacts with chlorine gas, how many electrons a Magnesium atom loose? How many electrons a chlorine atom can accept? How does that tell you the formula of the product? Give the formula and name of the final product?
  
• Which one of these elements has its most outer shell completely filled, F, Ne, Na? Is there anything special about this element?
  
• Which orbital do these transition metals are filling in? Sc, Ti, V, Cr?
  
• What is the (mass) percent of carbon element in sugar?
  
• Christopher Reeve's accident, subsequent paralysis and death are well publicized.What is the controversial cell-based procedure, considered immoral by some, that has been proposed to replace his damaged neurons? How would it work?
  
• How many number of moles of ammonia can be formed from #"0.25 moles of N"_2# gas?
  
• If 0.30mol of Zn is added to hydrochloride acid containing 0.52 mol of HCl, how many moles of H2 are produced? ( what is the theoretical yield of H2 produced in the reaction?
  
• How many moles of aluminum sulfide in 155 gram of aluminum?