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Percent Composition
Page 3
Questions (169)
A 0.4671g sample containing sodium bicarbonate (a mono acidic base) is dissolved and titrated with standard solution of HCl acid
2 answers
asked by
Wisdom
699 views
A 39 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3.
3 answers
asked by
Alex
704 views
A 0.3146-g sample of a mixture of NaCl(s) and KBr(s) was dissolved in water. The resulting solution required 37.20 mL of 0.08765
1 answer
asked by
Woof
701 views
What is the percent by mass of oxygen in H2O?
A. 11.1% O B. 50.0% O C. 88.9% O D. 95.0% O I think C
2 answers
asked by
shana
651 views
A 3.23 gram sample of a sodium bicarbonate mixture was reacted with excess acid. 48.52 mL of the evolved gas was collected over
4 answers
asked by
Tichele
693 views
if 20g of sugar are added to a beaker filled with 200g of water what is the percent composition of the solution ?
3 answers
asked by
Ryan
616 views
WHAT IS THE PERCENT MASS OF SODIUM HYDROXIDE IF 2.5G OF naoh ARE ADDED TO 50.00G OF H20?
2 answers
asked by
HAMDIYA
631 views
amphetamine (c9h13n) is a powerful stimulant. what is the percent composition of all of the elements in this compound?
A.
3 answers
asked by
drew
624 views
Find the percent by mass of sodium chloride in a 1.35 M NaCl solution. The density of the solution is 1.06 g/mL..............how
1 answer
asked by
Stacy
618 views
Suppose that a 0.6123-g unknown chloride-containing sample was dissolved, and and AgCl precipitated by adding a AgNO3 solution.
3 answers
asked by
Anonymous
639 views
An impure sample of (COOH)2 ยท 2 H2O that has a mass of 4.3 g was dissolved in water and titrated with standard NaOH solution.
3 answers
asked by
Big Boy
630 views
I Posted this question the other day:
A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacted completely with Cl2 to
7 answers
asked by
Adam-- Dr Bob, Help!
610 views
calculate the percent composition of the compound that forms when 222.6 g nitrogen combines completely with 77.4g oxygen.
1 answer
asked by
mike
590 views
A 5.00 gram mixture of CaO and CaO3 is heated strongly. After heating, the mixture it has a mass of 4.00 grams. What % of the
2 answers
asked by
Paul
560 views
What is the percent mass of calcium in a calcium supplement if 1.28-g of calcium carbonate is extracted from a 2.72-g pill?
2 answers
asked by
soso
542 views
U+F6-->UF6
If 8.4 g UF6 are recovered from 55 kg of ore, what is the weight % of uranium in the ore? Answer in units of %
2 answers
asked by
Josh
548 views
A .7567 impure KHP was dissolved in water. 26.7 ml of standardized 0.068 M NaOH was used to achieve a phenolphthalein end point.
2 answers
asked by
jane
551 views
What is the percent composition of each element in ammonium nitrate?
2 answers
asked by
Angel
526 views
If 0.250 moles of NaOH are dissolved in 125g of water, what is the %m/m of NaOH in this solution?
I converted 0.250 mol to 10.0
2 answers
asked by
Jen
537 views
How is percent composition calculated?
A. Dividing the mass of each element in the compound by the total mass of the compound and
2 answers
asked by
shana
541 views
I'm confused on how to do these. Please show and explain how to do these. Test/quiz may be tomorrow. Pop Quiz!!!
How do you
3 answers
asked by
Amanda
521 views
Determine the percent composition of sodium hydrogen carbonate.
Na H C O3 1*22.999 1*1.008 1*12.011 3*15.999 22.999 1.008 12.011
1 answer
asked by
duane
531 views
If an Alka-Seltzer tablet has a mass of 4.953 g, and an Erlenmeyer flask containing an HCl and water solution weighs 160.351 g,
2 answers
asked by
Me
534 views
Suppose that 1.78 x 10^3 kg of Fe are obtained from a 5.80 x 10^3 kg sample of Fe2O3. Assuming that the reaction goes to
2 answers
asked by
Joe
523 views
What is the percent composition for Lucky Charms?
2 answers
asked by
Anonymous
496 views
I am enrolled in analytical chemistry after a 4 year break from any chemistry. I was recently given a problem set and I need
2 answers
asked by
Kenneth
508 views
A 1.147 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl
2 answers
asked by
Lana
513 views
If 267 mL of O2, measured at STP, are obtained by the decomposition of the KClO3 in a 3.33 g mixture of KCl and KClO3, 2KClO3(s)
2 answers
asked by
kayla
510 views
A solution prepared by dissolving 20.2 mL of CH3OH in 100mL of water @ 25 celcius. The final volume of the solution is 118 mL.
1 answer
asked by
susan
515 views
find the percentage by mass of nitrogen present in (NH4)2SO4
2 answers
asked by
lucky
478 views
A 26.6 g sample of an unknown compound contains 0.8 g of oxygen. What is the percent by mass of oxygen in the compound?
2 answers
asked by
Mg Good
470 views
Calculate the weight percent of water in NiSO4 6H2O, how to calculate it?
2 answers
asked by
Brittany
451 views
If you have 1911.9 g of a bleach solution. The percent by mass of the solute sodium hypochlorite NaOCl is 3.62. How many grams
1 answer
asked by
Daryll
459 views
Okay, so I have to find the percent of water in each solution, but it involves different reagents and I'm not sure how to figure
1 answer
asked by
Sam
451 views
A company is making detergent out of soap and water. They made one batch that has 30% soap and another batch which is 60% soap.
1 answer
asked by
Anonymous
470 views
When a 0.5725 g sample of Lysol was titrated with 0.100 M NaOH, an endpoint was obtained at 15.00 mL. What is the percent of HCl
1 answer
asked by
hank
450 views
In order for the percent composition of a compound to be calculated, the molar mass of the compound and the chemical formula
1 answer
asked by
shana
454 views
A sample of magnesium (13 g) when heated in
air produces 22 g of product. What percent (by weight) of magnesium is present in the
1 answer
asked by
z
458 views
Barium sulfate (MW= 233.38 g/mole) precipitated from a 1.300 g sample was contaminated with 9.4 mg of Fe2(SO4)3 (MW = 399.98
1 answer
asked by
Anonymous
497 views
A 71.1 g sample of an unknown compound contains 10.1 g of hydrogen. What is the percent by mass of hydrogen in the compound?
When
1 answer
asked by
taja
448 views
A magnesium alloy contains the following volumes of each element: 341.2 cubic decimeters of magnesium, 30.96 cubic decimeters of
1 answer
asked anonymously
29 views
Calculate the percent composition of the elements in each compound.
MgSO4 C6H12O6 Question 2 options: the element that comprises
1 answer
asked anonymously
21 views
What is the percent composition of C in C6H12O6 ?
Responses 7% 7% 40% 40% 12% 12% 53
1 answer
asked anonymously
13 views
What is the percent composition of Na in NaOH?
Responses 3% 3% 40% 40% 58% 58% 72%
1 answer
asked anonymously
9 views
What is the percent of Cu in CuBr2 ?
Responses 58% 58% 72% 72% 40% 40% 28
1 answer
asked anonymously
10 views
What is the percent composition of O in C6H12O6 ?
Responses 53% 53% 40% 40% 16% 16% 7%
1 answer
asked anonymously
15 views
What is the percent composition of O in C6H12O6 ?
1 answer
asked anonymously
11 views
What is the percent composition of H in C6H12O6 ?
1 answer
asked anonymously
13 views
What is the percent composition of Na in NaOH
1 answer
asked anonymously
8 views
What is the percent composition of C in C6H12O6
1 answer
asked anonymously
13 views
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Parent Categories (29)
Acid-base reactions
Acids and Bases
Analytical Chemistry
Chemical Analysis
Chemical calculations
Chemical Composition
Chemical Composition and Structure
Chemical Compounds
Chemical Formulas
Chemical Formulas and Compounds
Chemical Reactions
Chemical Reactions and Mixtures
Chemical Solutions
Chemistry
Composition
Composition Analysis
Composition of Substances
Concentration calculations
Elemental Composition
elements and compounds
Lab Experiments
Laboratory Techniques
Mass and Concentration
Materials/Alloys
Molecular Composition
Organic Chemistry
Solutions
Solutions and Dilutions
Stoichiometry