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Stoichiometry
Page 8
Questions (11,726)
Calculate the molarity of a phosphoric acid(H3PO3)solution that is 84% by mass phosphoric acid and has a density of 1.87g/mL.?
5 answers
asked by
Lahna
3,957 views
I am really having trouble answering this question, can someone help?
A binary compound between an unknown element E and hydrogen
4 answers
asked by
Melissa
3,450 views
how many moles of water vapour are formed when 10 liters of butane gas C4H10 is burned in oxygen at stp?
20 answers
asked by
nati
6,519 views
predict whether or not a precipitate will form if you mix 75ml of a NaOH solution with pOH = 2.58 with 125ml of a 0.018M MgCl2
4 answers
asked by
glenn
3,172 views
2KClO3 --> 2KCl + 3O2
What mass of O2 can be made from heating 125 g of KClO3? I know that the answer is 49 g O2 but I keep
3 answers
asked by
Ana
4,315 views
calculate the number of moles in 0.00655 g of antimony
6 answers
asked by
lala
1,708 views
0.499g of Cuso.XH2O when heated to constant weight gave a residue 0.34g The value of X is?
4 answers
asked by
Sarah Banks
1,881 views
5.0g of a mixture of caco3 and caO liberated 1.32g of carbon(4) oxide on strong heating .
what is the percentage of Cao in
5 answers
asked by
poppy👌🤔
1,460 views
In the formation of smog, nitrogen and oxygen gas react to form nitrogen dioxide:
N2(g)+2O2(g)→2NO2(g)How many grams of NO2
6 answers
asked by
ellie
2,580 views
A solution of trioxonitrate (V) acid contained 0.67g in 100cm3. 31.0cm3 of this solution
neutralized 25cm3 of a sodium
5 answers
asked by
BROOKLYN
1,972 views
How long would it take for 2.2 x 10^-4 mol H2 to effuse through the same orifice as the 2.2x 10^-4 mol N2? (It takes 105s for N2
5 answers
asked by
Nikki
1,310 views
How many molecules are in 2.6 grams of H2O?
5 answers
asked by
Bob
2,400 views
1.86 g of ethanol reacts with 10.0 g of oxygen. What is the total volume of gas present (in L) after the reaction is complete,
5 answers
asked by
Jade
1,796 views
1 g alloy of Cu and Zn reacted with excess of H2SO4 gives 60 ml of H2 at STP. What is the % of Zn in the alloy?
4 answers
asked by
abhijit
1,696 views
what is the total number of moles in 80.0 grams of C2H5Cl (gram-formula mass=64.5grams/mole)?
(1)0.806 (2)1.24 (3)2.48 (4)5.16 i
5 answers
asked by
Jason
9,899 views
How do I calculate number of moles of K2C2O4 in 20mL of a saturated (300g K2C2O4.H2O per liter) solution....
4 answers
asked by
Chan
2,914 views
The mole fraction of neon in the air is about .0000026. If the average molar mass of air is 28.96 g/mol, what is the
5 answers
asked by
Sarah
4,406 views
calculate the volume(ml) of a 0.215M KOH solution that will completely neutralize each of the following?
a) 2.50ml of a 0.825M
4 answers
asked by
Connie
4,549 views
An unknown metal is found to have a density of 19.300 g/cm^3 and to crystallize in a body-centered cubic lattice. The edge of
4 answers
asked by
sam
4,704 views
If 7.83 g FeCl3(s) is dissolved in enough water to make 2.50 L of solution, what is the concentration of Fe3+ in the solution?
5 answers
asked by
Kevin
2,002 views
suppose that you could decompose 0.250 mole of Ag2s into its elements
a.How many moles of silver would you have? how many moles
7 answers
asked by
ben
2,973 views
When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?
5 answers
asked by
Taylor
8,305 views
A 500 mL potassium chloride solution was prepared by dissolving
potassium chloride in distilled water. 25.0 mL of the solution
4 answers
asked by
Prince
1,365 views
Calcium carbonate of mass 10g was heated until there was no further change
A. Write an equation for the reaction B. Calculate the
4 answers
asked by
Stephen
1,294 views
A metal x with relative atomic mass 56 form an oxide with formula X2 O3 how many grams of metal will combine with 10g of
6 answers
asked by
Yahdel
2,395 views
3.05 g of hydrated copper sulphate produces 1.94g of anhydrous salt.assuming complete removal of all water of
5 answers
asked by
maria
1,142 views
How many grams of NH4Cl must be added to 0.560 L of 1.90 M NH3 solution to yield a buffer solution with a pH of 8.50? Assume no
5 answers
asked by
hannah
3,395 views
calculate the amount of 95% marble required to obtain 11.2Litres OF CARBON DIOXIDE
4 answers
asked by
sum
3,410 views
Given the reaction: C3H8(g) + 5O2(g) �¨ 3CO2(g) + 4H2O(g)
What is the total volume of H2O(g) formed when 8.00 liters of C3H8(g)
4 answers
asked by
Dillon
3,360 views
When 2.50 mol of Mg3N2 are allowed to react according to the following equation, how many moles of H2O also react?
Mg3N2 + 6H2O
6 answers
asked by
Soojung
6,385 views
Hydroxylapatite, Ca10(PO4)6(OH)2, has a solubility constant of Ksp = 2.34 × 10-59, and dissociates according to
Ca10(PO4)6(OH)2(
4 answers
asked by
Angelyka
3,181 views
So I have the balanced equation:
c3H8 +502 = 3C02 +4H20 Question: At STP propane (C3H8) burns in oxygen to form 2.15L of carbon
4 answers
asked by
Stefan
1,235 views
A 116.9 g sample of nitric acid solution that is 70.0% HNO3 (by mass) contains how many moles of HNO3?
how did you get the answer
5 answers
asked by
DIANA
2,103 views
What is the percent by mass of glucose in a solution containing 0.15 moles of glucose dissolved in 410g acetic acid? The molar
4 answers
asked by
Lauren smith
3,463 views
how many moles of butane gas c4h10 react to produce 3.50moles of water?
4 answers
asked by
tracey
2,907 views
if 22.5 mL of 0.383 M HCl are required to completely neutralize 20.0 mL of KOH, what is the molarity of the KOH solution?
6 answers
asked by
lavonne
2,559 views
In an experiment to find the percentage of calcium carbonate in sand from a beach, 1.86 g of sand reacted with an excess of
4 answers
asked by
Tony
2,176 views
How many grams of phosgenite can be obtained from 10.0 g of PbO and 10.0 g of NaCl in the presence of excess water and carbon
4 answers
asked by
heather-please help due by midnight!!!
1,893 views
what is the total mass of LiBr required to make 500.0 grams of an aqueous solution of LiBr that has a concentration of 338 ppm?
4 answers
asked by
Lauren
4,045 views
How many moles of O2 are present in 67.2 L of O2 gas at STP?
4 answers
asked by
Curlyqty
6,088 views
What three conversion factors are often used in mole conversions?
4 answers
asked by
Sam
3,981 views
Use the reaction shown to calculate the mass of iron that must be used to obtain 0.500 L of hydrogen at STP: 3Fe(s) + 4H2O(l)
4 answers
asked by
jason
3,764 views
Mg3N2 + 6H20 = 3Mg(OH) + 2NH3
What mass of magnesium nitride would you need to react with excess water to produce 25g of ammonia?
4 answers
asked by
Stephanie
1,344 views
How many grams of caco3 will be formed by passing excess co2 gas through 100ml of 0.25M ca(H)2 solution?
4 answers
asked by
sheeri
724 views
How many moles are in 7.5x10^24 molecules of carbon dioxide? Grams?
5 answers
asked by
Jake
2,595 views
An unknown molybdate (MoO4^-2) solution (50.00ml) was passed through a column containing Zn(s) to convert molybdate into Mo^3+.
4 answers
asked by
Ken
1,236 views
What volume of oxygen at NTP is required to oxydize 100gram of glucose ?
4 answers
asked by
Shishir
1,576 views
The elements lithium and oxygen react explosively to from lithium oxide (Li2O). How much lithium oxide will form if 3.03 mol of
4 answers
asked by
Kyle
7,205 views
How many grams of chlorine are required to react completely with 5.00 grams of sodium to produce sodium chloride ? 2na + cl2 →
5 answers
asked by
mispa
1,096 views
17.8 g of CH4 react with 55.4 g of O2 to form CO2 and H20
identify the limiting and excess reagent. what is the mass of CO2
7 answers
asked by
Skye
1,201 views
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