[Answered] Tetraboric acid, H2B4O7, is prepared by heating boric acid, H3BO3 (a condensation reaction involving ...

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Author Question: Tetraboric acid, H2B4O7, is prepared by heating boric acid, H3BO3 (a condensation reaction involving ... (Read 102 times)

fnuegbu

Hero Member
Posts: 539

on: Aug 27, 2018

Tetraboric acid, H2B4O7, is prepared by heating boric acid, H3BO3 (a condensation reaction involving water loss). If 400.0 mmol H3BO3 are used, what mass (g) of H2O is formed, assuming quantitative stoichiometric conversion?

A) 5.77
B) 0.500
C) 0.320
D) 7.21
E) 9.01

Question 2

6.0 karat gold contains ________ gold.

A) 6.0
B) 25
C) 50.
D) 75
E) 1.0 102

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blazinlyss

Sr. Member
Posts: 333

Reply #1 on: Aug 27, 2018

Answer to Question 1

E

Answer to Question 2

B

fnuegbu

Hero Member
Posts: 539

Reply #2 on: Aug 27, 2018

blazinlyss

Sr. Member
Posts: 333

Reply #3 on: Aug 27, 2018

You're welcome

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