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Percentage composition
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Questions (131)
Can someone give me some directions as to how to reach the answer for this problem:
A 0.608g sample of fertilizer contained
4 answers
asked by
Chemically Confused
1,768 views
Determine the percentage composition of each of the following compounds
a) NaCl b) AgNO3 c) Mg(OH)2
6 answers
asked by
john
4,376 views
KHCO³ is contaminated with K²CO³ as impurity. If 2.5g of the impure KHCO³ on heating produces 0.224dm³ if CO² at s.t.p,
3 answers
asked by
Black mamba
882 views
5.00gram of a mixture of caco3 and cao liberated 1.32 gram of co2 on strong heating what is the percentage of caco3 in the
3 answers
asked by
babalola ayomide
103 views
Calculate %composition of element in the following compounds-Na2Co3.10H2O
3 answers
asked by
Owolabi
241 views
Percentage mass of sodium in sodium trioxonitrate(v) Na=23, N=14,O=16
9 answers
asked by
Precious
326 views
A 0.8870-g mixture of sodium chloride and potassium chloride is dissolved in water and silver nitrate is added. The AgCl that
4 answers
asked by
Ethan
2,260 views
What is the percentage by mass of nitrogen in ammonium sulphate ?
3 answers
asked anonymously
34 views
7) A 3.33 g sample of iron ore is transformed into a solution of iron (II) sulfate. And this solution is titrated with 0.0150 M
3 answers
asked by
CHIPNDALE
855 views
What is the percent by mass of hydrogen in aspirin C2H8O4?
4 answers
asked by
Sierra
1,079 views
given that the molecular weight of mg(oh)2, magnesium hydrogen, is 58-32g, what percentage of this compound is oxygen?
4 answers
asked by
Musawar
335 views
I am confused about where I am going wrong here...
Suppose that 1.331 g of impure barium hydroxide is dissolved in enough water
3 answers
asked by
Val
829 views
A chemist needs 70 milliliters of a 40% solution, but only has 32% and 60% solutions available. How many millilitres of each
1 answer
asked by
Cope90
183 views
What is the percentage by mass of glucose in a solution which contains 18gm of glucose and 250 gm of water
2 answers
asked by
Hitesh
620 views
If 0.8000 g of a mineral yields 0.2400 g of NaCl + KCl, and this mixture contains 58.00% of Cl, what is the percentage of Na2O
1 answer
asked by
Denise
1,025 views
2.5g of a mixture of anhydrous BaOH and BaCl2 was dissolved in distilled water and made up to 250cm3. 20cm3 of this solution
2 answers
asked by
joseph
498 views
2gm of mixture hydrated sodium carbonate na2c03 /OH20 and sodium bicarbonate was dissolved in water and made up to 250cc. 25cc
2 answers
asked by
ken
789 views
25g of a sample of ferrous sulphate was dissolved in water contains dilute h2s04 and the volume made up to one litre. 25ml of
2 answers
asked by
Fai
558 views
0.224g sample that contained only bacl2 and kbr required 19.7ml of 0.1M ango3 to reach the end point. Calculate the percentage
1 answer
asked by
Fai
463 views
What is the percentage distribution of different elements in a different compound, given its molar mass and mass percentage of
1 answer
asked by
Gina
404 views
A 0.5g of fuming h2so4 oleum is diluted with water. This solution is completedly neutralized by 26.7ml of 0.4N naoh. Find the
4 answers
asked by
Fai
3,378 views
30cm^3 of a mixture of methane and ethane were mixed with 100cm^3 of oxygen at ordinary temperature and pressure and exploded.
15 answers
asked by
LC
725 views
I figured all the parts of the problem except for the last one. Can you tell me what to do?
In the preparation of a mustard
1 answer
asked by
Kelli
913 views
a mixture containing CaCO3 and CaO only. When 0.3500 g of mixture was ignited and cooled, the wt of mixture was 0.3400 g.
2 answers
asked by
RRG
1,216 views
A piece of iron wire weighs 2.225g. It is dissolved in acid, which oxidizes the iron to iron(II), and made up to 250 mL. A 25mL
1 answer
asked by
Farah
706 views
A 1.362 g sample of an iron ore that contained Fe_3O_4 was dissolved in acid and all the iron was reduced to Fe^2+. the solution
2 answers
asked by
mohd
511 views
Can someone give me some directions as to how to reach the answer for this problem:
A 0.608g sample of fertilizer contained
2 answers
asked by
Chemically Confused
568 views
A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the
5 answers
asked by
Jordan
918 views
If the percent hydration of CuCl2 x XH2O is 13% what is the coefficient of water?
2 answers
asked by
Em
597 views
A 1.362 g sample of an iron ore that contained Fe_3O_4 was dissolved in acid and all the iron was reduced to Fe^2+. the solution
3 answers
asked by
mohd
1,737 views
A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was
4 answers
asked by
BEE
1,580 views
You are given 2.677 g of a mixture of KClO3 and KCl. When heated, the KClO3 decomposes to KCl
and O2, 2 KClO3 (s) → 2 KCl (s) +
4 answers
asked by
Sam
1,388 views
What is the percent by mass of Ca3N2?
2 answers
asked by
Sam
1,180 views
calculate the percentage by mass of all component in sodium trioxonitrate 4NaNo3(Na23 N14,o16
3 answers
asked by
Anonymous
1,190 views
A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this
2 answers
asked by
cc
1,173 views
a sample containing bacl2.2h2o,kcl snd inert material weighed 0.8417g. after heating the sample at 160c for 45 minutes it
3 answers
asked by
sarrah guzman
1,194 views
A 0.2528 g sample of a mixture containing sodium carbonate and sand requires 12.32 mL of 0.2409 M HCl(aq). Assuming that the
5 answers
asked by
Jordin
1,124 views
If 0.8000 g of a mineral yields 0.2400 g of NaCl + KCl, and this mixture contains 58.00% of Cl, what is the percentage of Na2O
1 answer
asked by
Marife
1,053 views
0.50g of mixture of k2c03 and li2c03 requires 30ml of a 0.25N HCL solution for neutralization. What is the percentage
2 answers
asked by
Fai
1,048 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 of
4 answers
asked by
Adele
1,022 views
Calculate the percentage by mass of each of the following component elements in the respective compounds
A. Sulphur
1 answer
asked by
Miracle Solomon Iyamu
105 views
A student reacts 0.1212 g of an Mg/NaCl mixture with hydrochloric acid. The volume of hydrogen saturated with water vapor
3 answers
asked by
Duane
942 views
a silver coin has a mass of 2.50g and is analysed for silver by dissolving in dilute nitric acid, and precipitating silver as
2 answers
asked by
HELP PLEASE!!!!
923 views
I need help with these questions
1. Calculate the percentage by mass of potassium in potassium sulfate K2 SO4 2. calculate the
3 answers
asked by
Victoria
864 views
A 18.2 g sample of an unknown compound contains 0.7 g of oxygen. What is the percent by mass of oxygen in the compound?
2 answers
asked by
taja
1,051 views
A 5.000 gram sanple of dry mixture of potassium hydroxide, potassium carbonate and potassium chloride is reacted with 0.100L of
2 answers
asked by
Chansa
807 views
If the mole fraction of sulfuric acid (H2SO4) in an aqueous solution is 0.325, wat is the percent by mass of H2SO4?
1 answer
asked by
Lola
812 views
Alewuya needs to mix a 20% acid solution with a 40% acid solution to create 100 millileters of a 24% solution. How many
3 answers
asked by
AMBER
702 views
Final question..
An alloy used in aircraft construction consists of aluminium, copper and magnesium. An 11.34g sample of alloy
1 answer
asked by
atriletz
716 views
calculate % tin by weight in tin oxide.
SnO2. 78.77%?
2 answers
asked by
Anonymous
684 views
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Parent Categories (21)
Analytical Chemistry
Chemical Analysis
Chemical calculations
Chemical Composition
Chemical Compounds
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Chemical Reactions and Equations
Chemical Reactions/Calculations
Chemistry
Composition of Substances
Compound Composition
Concentrations and Solutions
elements and compounds
Gas Mixtures
Gases and Mixtures
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Stoichiometry
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