Wednesday
April 16, 2014

Posts by Eliazbeth


Total # Posts: 10

lab
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the number of equivalents of acetic acid in vinegar.

Chemisty
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the number of equivalents of acetic acid in vinegar.

Chemisty
Calculate the number of milliliters of 0.738 M NaOH required to precipitate all of the Mg2+ ions in 148 mL of 0.541 M MgSO4 solution as Mg(OH)2. The equation for the reaction is: MgSO4(aq) + 2 NaOH(aq) Mg(OH)2(s) + Na2SO4(aq) _____________mL NaOH

Chemisty
Oh i ubderstand it better now, thanks a lot. ummm chemistry is harddd, so glad thats not my major

Chemisty
I DIDNT GET HOW THE PCI_3_ why, didnt the P have P_4_ , thats what i didnt get. and i had that answer but i wanted to make sure it was right

Chemisty
When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: phosphorus (P4) (s) + chlorine (g)----> phosphorus trichloride (l)

Chemisty
How many GRAMS of chromium(II) nitrite are present in 1.72 moles of this compound ? grams. 2. How many MOLES of chromium(II) nitrite are present in 1.46 grams of this compound ? moles.

Chemisty
For the following reaction, 0.390 moles of nitrogen gas are mixed with 0.139 moles of oxygen gas. nitrogen (g) + oxygen (g) nitrogen monoxide (g) What is the FORMULA for the limiting reagent? What is the maximum amount of nitrogen monoxide that can be formed? moles

math
TRUE

Chemisty
How do you convert 237.7 g/mol to moles?

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