Chemistry, 20.11.2020 20:40 cutebab6723
Which equation describes a reduction?
A- Upper M g (s) right arrow Uper M g superscript 2 plus (a q) plus 2 e superscript minus.
B- 2 upper C l plus 2 e superscript minus right arrow 2 upper C l superscript minus.
C- Upper N a (s) right arrow upper N a superscript plus (a q) plus e superscript minus.
D- Upper A l (s) right arrow upper A l superscript 3 plus (a q) plus 3 e superscript minus.
Answers: 3
Chemistry, 22.06.2019 03:30
Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)
Answers: 1
Chemistry, 22.06.2019 03:40
Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)
Answers: 3
Chemistry, 22.06.2019 12:00
What is the percentage of hydrogen in nitrogen trihydride
Answers: 1
Chemistry, 22.06.2019 13:30
In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.
Answers: 2
Which equation describes a reduction?
A- Upper M g (s) right arrow Uper M g superscript 2 plus (a q...
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