The student filters and dries the precipitate of CaCO3 (molar mass 100.1g/mol ) and records the data in the table below. Volume of Na2CO3 solution

50.0 mL

Volume of 1.0MCa(NO3)2 added

100.0 mL

Mass of CaCO3 precipitate collected

0.93 g

c) Determine the number of moles of Na2CO3 in the original 50.0mL of solution.

ash is formed by combustion

explanation:

answer: theft is the example

explanation:

answer:

2

explanation:

1+1 = 2

the reason this is so is because of basic addition. we can double check this without using addition if you really want. if you take 1+1=x, subtract 1 from both sides than you get 1 = x - 1. subtract x from both sides and you get 1 - x = -1. subtract 1 from both sides again and you get -x = -2. finally, multiply both sides by -1 to get x = 2. subtraction is still technically addition you say? fine, have it your way. 1 + 1 = x. by definition, adding something to itself is the same thing as multiplying it by 2. this means we can technically rewrite the equation as

1 * 2 = x. now all we have to do is solve it. 1 * 2 = x when simplified results in 2 = x, or x = 2. this shows 1 + 1 = x. you say you want a real answer. you want me to start you from the ground up? well i would, but that would practically just be stealing from what was written on this website: go check it out if you really need to.