Bello

5.30g of pure anhydrous sodium carbonate, na2co3 was weighed and dissolved in a 250cm³ standard flask.The solution was made up to the etched mark with distilled water, calculate the number of moles of na2co3 in the solution.

which one is cca answers

It’s a yw

The savanna zones of Nigeria is made up of grass land and is further sub-divided into three main belt biotic communities which are Southern Guinea savanna, Northern Guinea savanna and Sahel Savanna

Thank ya'll for checking my answers, but can someone help me understand how to the right answers? I didn't understand my math lesson very well.

how to get*