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What is the molar mass of #K_2Cr_2O_2#?

Answer 1

Owen Ambrose

Well, what are the molar masses of potassium, chromium, and oxygen individually...?

And a quick glance at the Periodic Table tells you...

#Cr, 52.00*g*mol^-1#

#K, 39.10*g*mol^-1#

#O, 16.00*g*mol^-1#.

You simply add these masses appropriately to get the molar mass of the compound. Note that compound itself is PROBABLY #K_2Cr_2O_7#, or #K_2CrO_4#....#K_2Cr_2O_2# as written is a bit suspect...

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Answer 2

Serenity Allen

Molar mass of K₂Cr₂O₂ is approximately 291.98 g/mol.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.