1)
A)
How many moles of Br are there in a
sample of Br that contains 3.15×1024atoms?
moles
B)
How many Ba atoms are there in
4.39 moles of Ba?
atoms
2)
How many moles of Br are there in
63.0grams of Br?
moles
How many grams of Ba are
there in 4.39moles of Ba?
grams
3)
How many Ca atoms are there in a
63.0gram sample of Ca ?
atoms
How many grams of Rb are there in a...
Pharmacology Dosage
Order – Furosemide 40 mg po daily
Available – Furosemide 20 mg/tablet
How many tablets will the nurse administer?
Answer: ________________________________
Order – 1000 mL D5W over 6 hours
Available – 1 liter bags D5W; IV tubing with a drop factor of 10
gtt/mL
Calculate the flow rate in gtt/min.
Answer: ________________________________
Order – Normal Saline 200 mL over 2 hours
Available – 500 mL and 1 Liter bags Normal Saline; IV tubing
with a drop factor of...
How many moles of magnesium (if any) remain when 5 g of Mg is
burned in 2.5g of pure O2 to make magnesium oxide? Answer is 0.0498
mol Please show your work
A typical aspirin tablet contains 424 mg of aspirin (C9O4H8), a
monoprotic acid with a Ka= 2.8x10^-4. A monoprotic acid donates a
single proton. If you dissolve two aspirin tablets in a 300 mL
glass of water, what is the pH of the solution?
A typical aspirin tablet contains 319 mg acetylsalicylic acid.
Calculate the pH of a solution that is prepared by dissolving two
aspirin tablets in enough water to make one cup (249 mL) of
solution. Assume the aspirin tablets are pure acetylsalicylic acid,
Ka=3.3x10^-4.
Calculate the molarity of a 1.8 L solution that contains 6.71
moles of NaCl. How many moles of NaOH are in a 935 mL solution that
has a concentration of 7.3 M?
What is the volume (in L) of a solution that contains 3.8 moles
of MgCl2 and has a concentration of 2.5 M? When you use 58.9 mL of
4.0 M HCl to produce H2 gas, how many grams of zinc does it react
with? 2HCl + Zn →...
How many moles of NaH2PO4 and how many moles of H3PO4 are needed
to make one liter of a 450. mM phosphate buffer with a pH of 2.6?
The pKa's for phosphoric acid are 2.16, 7.21, and 12.32.
ph= pka + log (conj base/conj acid )