yussif

This page lists questions and answers that were posted by visitors named yussif.

Questions

The following questions were asked by visitors named yussif.

why sodium carbonate against hydrochloric acid titration using phenolphthalein indicator does not go to completion but stops at the sodium hydrogen carbonate stage.
13 years ago

Answers

The following answers were posted by visitors named yussif.

1/2(2x+9)*10=85 multiply through by 1/2 (x+9/2)*10=85 10x+45=85 10x=85-45 10x=40 10x/10=40/10 x=4
13 years ago