The chemical equation below shows the combustion of propane (C3Ha). C3H8 +502 - 3C02 + 4H20
The molar mass of oxygen gas (O) is 32.00 g/mol. The molar mass of CzHg is 44.1 g/mol. What mass of O2, in grams,
is required to completely react with 0.025 g C3H8?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?