4
A given compound is analyzed and found to contain only C, H and O. When a 3.750 g sample of
this compound is completely combusted in the presence of excess oxygen, the reaction yields
10.05 g of carbon dioxide and 2.47 g of water. What is the empirical formula of this compound?
a) C2H5O
b) C4H405
c) CH3O2
d) C5H60
Answers: 2
Chemistry, 21.06.2019 22:30
Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.
Answers: 2
Chemistry, 22.06.2019 02:30
Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1
Answers: 1
Chemistry, 22.06.2019 15:30
Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.
Answers: 2
Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
4
A given compound is analyzed and found to contain only C, H and O. When a 3.750 g sample of
Mathematics, 10.12.2021 22:40
History, 10.12.2021 22:40
Mathematics, 10.12.2021 22:50
Mathematics, 10.12.2021 22:50
Arts, 10.12.2021 22:50
English, 10.12.2021 22:50
English, 10.12.2021 22:50
Social Studies, 10.12.2021 22:50