Consider the reaction 3CaCl2(aq) + 2Na3PO4(aq) --> Ca3(PO4)2(s) + 6 NaCl(aq) (molar mass of calcium phosphate is 310.18 g/mol)
What mass of Ca3(PO4)2 is produced from 94.2 mL of 0.250 M Na3PO4 solution and 275 mL of 0.150 M

For the reaction 2H2 + O2 2H2O, what is the total mass in grams of water formed when 8.00 grams of hydrogen reacts completely with excess oxygen?2

For the reaction 2NaOH + H2SO4--> Na2SO4 + 2H2O, how many moles of Na2SO4 will be produced from 3.50 moles of NaOH if excess H2SO4 is available?

You have 75 mL of a solution with [Zn2+] = 0.031 M. The pH of this solution = 8. You titrate this solution with 0.055M EDTA. Remember that pMn+ = -log(Mn+)
a) What is true at the equivalence volume for any titration?
b) Calculate the Ve (the equivalence volume) for this titration?
c) Calculate the pZn2+ after addition of 20 mL EDTA
d) Calculate the pZn2+ at the equivalence volume
e) Calculate the pZn2+ after addition of 50 mL EDTA

How many grams of KCIO3 are needed to make 1.5 x 10^24 particles of O2
2KCI + 3O2 = 2KCIO3

Please predict the bond angles about the central atom in: Words to choose:bent,trigonometry planar,tetrahedral,trigonal bipyramidal,octahedral,0 non bonding pairs,1 non bonding pairs,2 non bonding pairs,109,5 degrees,120 degrees,180 degrees.Thanks.
. 4)CBr4:____Electron-domain geometry with_____on C.We confidently predict _____angles. 5)TeBr4:_____electron-domain geometry with_____on Te will cause the bond angles to deviate from ideal values.

Please predict the bond angles about the central atom in: Words to choose:bent,trigonometry planar,tetrahedral,trigonal bipyramidal,octahedral,0 non bonding pairs,1 non bonding pairs,2 non bonding pairs,109,5 degrees,120 degrees,180 degrees.Thanks
2)BCl3:______electron-domain geometry with ______on B .We confidently predict_____angles. 3)CH3I:______electrin-domain geometry with ____on C.Because the bonding electron domains are not exactly the same,we predict some deviation fro ideal _____ angles

Please predict the bond angles about the central atom in:
Words to choose:bent,trigonometry planar,tetrahedral,trigonal bipyramidal,octahedral,0 non bonding pairs,1 non bonding pairs,2 non bonding pairs,109,5 degrees,120 degrees,180 degrees.Thanks
1)H2S:______ electron-domain geometry with______on S will cause the bond angle to deviate from ideal ________ angles.

Which of the following is not a reason why some substances whose purity cannot be exactly known?
Show Options
A.they react with CO2 in air or moisture in air
B.because they are non-volatile.
C.they are highly hygroscopic
D.they react moisture in air