The light emitted by an incandescent element produces what?

If enthalpy is the heat for a reaction, it must have a sign as well as a magnitude. What sign should the enthalpy for an exothermic reaction have? Why?

The compressed gas in a sealed container has a gauge pressure of 185.4 kilopascals. If the air around the container is at standard pressure, what is the absolute pressure inside the container? A. 84.1 kPa B. 143.4 kPa C. 184.4 kPa D. 186.4 kPa E.

Topographic map are a type of road map? True or false

What particles did Rutherford discover

For which gases does the ratio of PV to RT equal a constant? ideal gases gases at very high pressure gases of very low temperature real gases

What is the nearest star in Gemini

In order for a solute to dissolve in a solvent, what must be true?

Radiocarbon dating can be used to determine the age of A a sample less than a million years old B a sample less than 100,000 years old C a sample less than 50,000 years old - D a sample less than five million years old

How many electrons in an atom can have each of the following quantum number or sublevel designations? (a) 4p (b) n = 3, l = 1, m1 = + 1 (c) n = 5, l = 3

Could the two aqueous solutions be identified through a visual inspection? Explain.