A commercial sample (2.0189 gram) of NaOH containing Na2CO3 as impurity was dissolved in water to make 250ml solution . A 10 ml portion of this solution required 20 ml of 0.1 N H2SO4 for complete neutralization. Calculate the percentage by weight of Na2CO3 in the sample.

i'm assuming that the correct answer is indeed the first one/ "a"..

i don,t know so just answer mine

no statements shown

the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl