3 years ago

4. Which metals will be able to reduce copper ions in solution?

1 answer:

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4. The metals that would be able to reduce copper ions in solution would be hydrogen(H), lead(Pb), tin(Sb), nickel(Ni), iron(Fe), zinc(Zn), aluminum(Al), Magnesium(Mg), sodium(Na), calcium(Ca), potassium(K), and lithium(Li).

5. If you had a house with both copper- and zinc-galvanized iron water pipes,zinc would be desirable because A metal that is easily oxidized would rust more readily.

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2. A sample of apple juice has a volume of 4 mL and a mass of 72 g. What is the density

tangare [24]

Mass=72g
Volume=4mL

$\\ \sf\longmapsto Density=\dfrac{Mass}{Volume}$

$\\ \sf\longmapsto Density=\dfrac{72}{4}$

$\\ \sf\longmapsto Density=18g/mL$

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2 years ago

Joe wants to prepare a nitrogen containing compound. Which compound can he prepare?

erik [133]

Answer- The correct answer is ammonia.

Explanation- All other compounds that are formed do not have any essence of Nitrogen in it. Whereas, Methane is a compound with carbon and hydrogen as elements while water has hydrogen and oxygen as its elements.

Lastly Hydrogen and chlorine combined together to form hydrochloric acid. Hence the only compound left with nitrogen is ammonia and has nitrogen and hydrogen as its basic elements.

7 0

3 years ago

HELP PLEASE!!

AleksandrR [38]

Answer:

The mass of the object would be 491.55g/mL. Hope this helped! :)

Explanation:

D= 7.25g/mL M=D•V

V= 67.8mL

M=7.25g/mL•67.8mL

M= 491.55g

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