The percentage of sodium hydrogen carbonate, NaHCO3, in a powder for upset stomach is found by titrating it with 0.275 M HCl. If 15.5 mL of the hydrochloric acid is required to neutralize 0.500 g of the sample, what is the percentage of sodium hydrogen carbonate in the sample

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

Can someone me with 1 to 4 plz. fast

One does not belong why? ice, gold ,wood ,diamond and table salt