![moneybaggzay123](/avatars/24539.jpg)
moneybaggzay123
13.07.2019 •
Chemistry
When copper (cu) and oxygen (o) combine, two different compounds are formed. the first compound contains 88.8% copper by mass, and the second compound contains 79.9% copper by mass. (note: assume a 100-gram sample of each ) show that cu and o combine with each other in conformity with the law of multiple proportions.the small whole number ratio of the mass of cu per gram of o in the first compound to the mass of cu per gram of o in the second compound equals correct: your answer is correct. : 1. this ratio indicates that cu and ocorrect: your answer is correct. with each other in conformity with the law of multiple proportions.(b) determine the empirical formulas of the compounds.compound 1: ?
Solved
Show answers
More tips
- F Family and Home How to Raise a Genius? Discover the Secrets Here...
- P Philosophy How did the concept of module arise in computer science?...
- D Dating, Love, Relationships Why Should the Man be Active and the Woman Passive during Foreplay?...
- S Society and Politics Выборы: Смысл, Значение и Отражение...
- B Business and Finance How to Get Your Money Back When Lending? Top 7 Ways...
- F Family and Home Do Lullabies Help Babies Sleep or Is it Just a Myth?...
- F Family and Home Why Does God Punish Us Constantly and How Can We Fix It?...
- D Dating, Love, Relationships Why do we feel shame?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- O Other How to Accidentally Get a Rare Coin with Your Change and How to Know Its Value?...
Answers on questions: Chemistry
- C Chemistry How many moles are there in 60.5 g of mercury(II) chloride?...
- C Chemistry What does light do in the photoelectric effect? O A. Light turns metal into electricity. B. Light knocks electrons off metal atoms. C. Light reacts with metal atoms. D. Light is...
- C Chemistry Which of the following is the correct arrangement of the elements germanium tin carbon and silicone in order of their increasing ionization energy...
- C Chemistry The molec carbonate decomposes to zinc oxide and carbon dioxide23 on heating, zinc carbonate decomposznco zno, cowhen 12 g of zinc carbonate are heated calculatea the mass of zinc...
- C Chemistry Melissa found that when sheadded 965 j of energy to a 0.25-kg sampleof copper, the temperature of the copperincreased by 10 k. what is the specific heat ofcopper? show your work....
- C Chemistry Energy required to heat 155 grams copper 90 degrees celcius...
- C Chemistry Analyze a scientist observes a 5-ml sample ofan unknown substance. it is a blue liquid with adensity of 1.2 g/cm². the substance reacts withcarbon dioxide. list each of the properties...
- C Chemistry Given these reactions, where x represents a generic metal or metalloid 1 ) h 2 ( g ) + 1 2 o 2 ( g ) ⟶ h 2 o ( g ) δ h 1 = − 241.8 kj 2 ) x ( s ) + 2 cl 2 ( g ) ⟶ xcl 4 ( s ) δ h...
- C Chemistry Metals are malleable because of weak bonds between atoms. this allows planes of atoms to slide past one another and into new positions. some alloys retain their malleability while...
- C Chemistry When water or melted ice soaks into the cracks of rocks and freezes, thus causing stress in the rocks due to expansion, causing the rock to break. this is called what...
Ответ:
a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound
1st compound contains 88.8 g cu
for cu
m = 63 g /mol
atomic % = 88.8 /63 = 1.42
for o
m = 16 g /mol
atomic % = 11.2 /16 = 0.7
b. the emperical formula of 1st compound is
cu1.4o0.7
cu2o
Ответ: