A sample of a substance has a mass of 78.9 g and a volume of 84.3 cm3 what is the density?

Which state of matter has a constant volume, but changes shape?/?

How can we reduce our carbon footprint

What is the standard cell notation of a galvanic cell made with zinc (Zn) and aluminum (Al) ? A. Zn (s) | Zn2 + (aq) || Al3 + (aq) | Al (s) B. Zn2 + (aq) | Zn (s) || Al (s) | Al3 + (aq) C. Al (s) | Al3 + (aq) || Zn2 + (aq) | Zn (s) D.

An arrangement of elements into rows and columns according to similarities in their properties

According to the kinetic molecular theory, the pressure of a gas in a container will increase if the es (1) A) number of collisions with the container wall increases. number of moles of the gas decreases.

H2S (g) + O2 (g) - > SO2 + H2O, how many grams of O2 are needed to make 25.0 g of SO2 (Hint: balance the equation first) a.) 12.5g b.) 18.7g c.) 32.0g d.) can't be determined

With the exception of our sun, most stars are huge, bright balls of gas located trillions of miles away from earth true or false

Which geologic time span covers the majority of Earth's history?

as the flames heat the gases in the balloon the volume of the gases increases at constant pressure the volume of all gases increases with increasing temperatures is this statement a scientific theory or law explain

At 1.0 atm, terell heats a sample of soild caffeine at 178c the soild converts directly into gas. what is the name of this phase change?