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Molar Mass Calculation
Page 3
Questions (351)
A 250.0 mL sample of an aqueous solution at 25 degrees Celsius contains 35.8 mg of an unknown nonelectrolyte compound. If the
5 answers
asked by
Bru
812 views
A sample of gas with a mass of 1.62 g occupies a volume of 941 mL at a pressure of 748 torr and a temperature of 20.0 C. What is
4 answers
asked by
kris
1,373 views
Calculate the number of molecules of NBr3 in 25.0 g NBr3. Use a molar mass with at least as many significant figures as the data
3 answers
asked by
Anonymous
1,307 views
The density of an elemental gas is 1.7824 g/L at STP. What is the molar mass of the element?
4 answers
asked by
Mary
1,617 views
There are 1.2 x 10^24 atoms of carbon in a sample of aluminum acetate, Al(C2H3O2)3. How many moles of hydrogen are in the
3 answers
asked anonymously
72 views
How many grams of Na2CO3 are required to Na2S2O3
3 answers
asked by
Rickia
319 views
A 0.188g sample of unknown metal, X (s), produced 71.4 ml of hydrogen gas when reacted with HCL according to the equation:
4 answers
asked by
K
1,092 views
calculate the mass in grams of .354 moles of NH3
3 answers
asked by
madi
750 views
how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions?
well normally you
4 answers
asked by
STACY
589 views
Phenylcarbinol is used in nasal sprays as a preseriative. A solution of 0.52g of the compound in 25.0g of water has a melting
4 answers
asked by
Tara
627 views
What is the mass, in grams, of each of the following?
a) 2.4×10−3 mol Sb b) 3.59×10−2 mol Ba c) 43.6 mol Xe d) 1.4 mol W
4 answers
asked by
Mely
1,430 views
Rank the following samples in number of atoms from least to greatest.
a) 2 mol of K atoms b) 48 g of S c) 27 g of Be d) 50 g of
2 answers
asked by
Samuel
1,248 views
the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to effuse. where as nitrogen gas
4 answers
asked by
Ellie
1,993 views
Calculate the molar masses of copper (II) nitrate trihydrate and of the precipitate formed by this reaction.
Are these steps
2 answers
asked by
Sarah
1,247 views
Identify the quantity that is calculated y dividing the molar mass of an element by Avogadro's number.
I don't get this
4 answers
asked by
Astrid
1,959 views
Determine the molar mass of the unknown acid.?
A 0.167-g sample of an unknown acid requires 27.8 mL of 0.100 M NaOH to titrate to
4 answers
asked by
Kyle
1,628 views
How do I convert the following quantity to moles?
44.0g of H2O
4 answers
asked by
Brittany
533 views
Hi, I have a few questions that I am struggling with. Any help would be greatly appreciated.
Question 1 Calculate the molar mass
4 answers
asked by
Bob
625 views
Thats CaCo3 is equal to 1.838 grams.
**sorry!
1 answer
asked by
jecce.
340 views
what is the mass of a mole of M&M's? How do I do this?
4 answers
asked by
Mary
851 views
Fungal laccase is .390% Cu by mass. If a fungal laccase molecule contains 4 Cu atoms, what is the molar mass of fungal laccase?
M
3 answers
asked by
Steve
935 views
A sample of 0.30 moles of a metal M reacts completely with excess fluorine to form 18.69 grams of MF2.
How many moles of F are in
4 answers
asked by
Brooke
1,983 views
After you preform your experiment, you determine that the Kf value for naphthalene is 6.89 °C/m . You are using 10g of
3 answers
asked by
Claire
1,397 views
a 3.54 grams solid sample of an unknown monoprotic acid was dissolved in distilled water to produce a 47.0 mL solution at 25
4 answers
asked by
jk
1,210 views
Calculate the mass of 1.00 mol of each of these substances:
a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||)
3 answers
asked by
Kelsi
1,524 views
A gaseous product of a reaction is collected at 280K and 0.95 atm. Given R=0.0821L⋅atmmol⋅K
, what is the molar mass of the
2 answers
asked by
blu
99 views
A is a solution of Hcl containing 7.3gdm-3 B is a solution of X2CO3 containing 10.6g1dm3,if 2343cm3 of a neutrized 25.0 cm3 of
1 answer
asked by
Ogunsanwo eyitayo
200 views
How many moles of molecules are there in 16g oxygen
options 1)106 2)23 3)12 4)16
5 answers
asked by
Jeon Jungkook
257 views
If I get 1 moles of Epsom salt, which has the chemical formula MgSO4.7H2O. What is the molar mass of this compound? Molar mass
2 answers
asked by
yug
513 views
I know that the molar mass of Benzene, (C6H6) is 78.12 grams, but that is for one mole. Does anybody know how to find the mass
3 answers
asked by
LR
741 views
A 265 ML ROUND-BOTTOMED FLASK CONTAINING 0.650G OF A GAS WAS COLLECTED AT A TEMPERATURE OF 25.0 CELECIUS AND 735 TORR
1 answer
asked by
MARI
330 views
How many grams of NH; can be produced from 13.6 g of H2?
Express your answer with the appropriate units.
3 answers
asked anonymously
23 views
Calculate the mole
217g of Fe2O3
3 answers
asked anonymously
15 views
Calculate the molar mass of caffeine, CgH10N402.
• 194.22 g O 110.15 g O 43.03 g • 194 g
3 answers
asked anonymously
33 views
73.79g of a compound MCl2 contains 28.54g of chlorine. Determine the molar mass mystery element M.
1 answer
asked by
Arika
390 views
The density of chloroform at a pressure of 220 mmHg and 25 degrees celsius is 1.42 g/L. Calculate the molar mass of chloroform.
M
5 answers
asked by
Jack
535 views
calculate the total no of moles present in 360 gm of oxalic acid
3 answers
asked by
yasir sheikh
299 views
A sample of gas has a mass of 0.580g . Its volume is 119mL at a temperature of 80∘C and a pressure of 743mmHg .
Find the molar
2 answers
asked by
Chemistry
521 views
what would have happened to the calculated molar mass if some benzoic acid was spilled before adding it to the lauric acid?
also,
4 answers
asked by
De
1,474 views
calculate the molar mass of the compound (K S 0 4 .1 2 H 2 0 )
1 answer
asked by
brown
417 views
A 0.505-g sample of a compound is dissolved in enough water to form 100.0 mL of solution. This solution has an osmotic pressure
2 answers
asked by
Me
819 views
What effect on the molar mass of the unknown acid would each of the following
have-that is-would it make the calculated molar
3 answers
asked by
Sean
1,345 views
Calculate the molar mass of an unknown molecular compound mixed with solid camphor C10H16O, heated and then cooled giving the
2 answers
asked by
Kelly
1,028 views
Calculate the molar mass of an unknown molecular compound mixed with solid camphor C10H16O, heated and then cooled giving the
2 answers
asked by
Kelly
523 views
If 1.0 mL of an unknown liquid was added to a flask instead of 6mL, would that change the calculated molar mass of the unknown
2 answers
asked by
Angela
502 views
If 1.0 mL of an unknown liquid was added to a flask instead of 6mL, would that change the calculated molar mass of the unknown
1 answer
asked by
Angela
443 views
If 1.0 mL of an unknown liquid was added to a flask instead of 6mL, would that change the calculated molar mass of the unknown
2 answers
asked by
Angela
596 views
What is the molar mass of hydrogen peroxide?
2 answers
asked by
Nami
1,521 views
3Co(NO 3 ) 2 (aq) + 2Na 3 PO 4 (aq) &---> Co 3 (PO 4 ) 2 (s) + 6NaNO 3 (aq)
how do I find the molar mass of precipitate.X hydrate
1 answer
asked by
Amber
339 views
Determine the molar mass of the following:
0.94g of a gas that occupies 500L at 0 degrees celcius and 1.00 (STP). I keep getting
3 answers
asked by
Steph
394 views
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