Dilute nitric acid reacts with sodium carbonate solution. 2HNO3 (aq) + Na2CO3 (aq) → 2NaNO3 (aq) + H2O (l) + CO2 (g) 25.00 cm3 of sodium carbonate solution of concentration 0.153 mol/dm3 reacts completely with 25.3 cm3 of dilute nitric acid. a) Calculate the number of moles of sodium carbonate.

b) Use your answer to (a) and the equation for the reaction to calculate the number of moles of nitric acid that reacted.

c) Use your answer to (b) to calculate the concentration of dilute nitric acid in mol/dm3.

d) Use your answer to (a), calculate the maximum volume (at r. t.p.) of carbon dioxide gas that could be produced in this reaction.

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(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.