Un compuesto está formado por un 80% de carbono (C) y un 20% de hidrógeno. (masas atómicas; C=12; H=1). La fórmula empírica de este compuesto será

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.

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Explain what happens at the saturation point when adding salt to water at room temperature.