3. When two or more substances are physically combined, the result is a(n) A. chemical change. B. element
C. compound
D. mixture

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.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Why does his teacher ask him to balance the equation by including the correct coefficient