# Lab--I cant not figuar this out please help! Procedure..Tare the balance. Measure 1/4 teaspoon of baking soda and place into the cup on the balance. Determine nd record the mass of the baking soda....

## Solution

Robert answered on Dec 31 2021
For Baking Soda
Mass of cup having ¼ Teaspoon baking soda = m1 grams
Mass of empty cup =m2 grams
Mass of ¼ tablespoon baking soda= m1-m2= x grams.
For Vinegar
Mass of cup having 22ml vinegar = m3 grams
Mass of empty cup = m4 grams.
Mass of vinegar = m3-m4 = y grams.
Baking soda and vinegar react with each other because of an acid-base reaction. Baking soda is
a bica
onate (NaHCO3) and vinegar is a diluted acetic acid (CH3COOH). One of the products
this reaction creates is ca
on dioxide.

1.Molar mass of sodium bica
onate

Chemical Equation = NaHCO3

Symbol Element Atomic weight Atoms Total Atomic Weight
Of Element in Compound
Na Sodium 22.9897 1 22.9897
H Hydrogen 1.00794 1 1.00794
C Ca
on 12.0107 1 12.0107
O Oxygen 15.9994 3 47.9982

So molar mass of NaHCO3 = 22.9897+1.00794+12.0107+47.9982
= 84.00654
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???

2.Number of moles of sodium...
SOLUTION.PDF