3 years ago

Explain the “war of the currents” please help me with at least 1 sentence.

1 answer:

5 0

The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s.

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Sonbull [250]

That’s the correct answer I believe ^

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3 years ago

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What volume (in mL ) of 0.200 M NaOH do we need to titrate 40.00 mL of 0.140 M HBr to the equivalence point?

Ugo [173]

NaOH + HBr =⇒ NaBr + H2O

35.0 ml HBr x 1 liter/1000 mL x 0.140 moles HBr/ liter = 0.0049 moles HBr

0.0049 moles HBr x 1mole NaOH/1mole HBr = 0.0049 moles HBr

0.0049 moles HBr x 1 liter NaOH/0.200 moles NaOH x 1000 mL/1liter= 24.5 mL NaOH

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3 years ago

When sodium and oxygen react to form an ionic compound, the mass of the compound ____ the sum of the masses of the individual el

Anna007 [38]

Hi Lara

The answer is : C

Is equal to

I hope that's help!