Avogadro stated that all gases at STP occupied 22.4 L. Suppose the density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that will float in air at STP?

Whether an element is classified as a major or as a trace mineral is determined by

The nitrogen oxide (NO) molecule has a bond length of 140 pm. Calculate the dipole moment, in Debyes, that results if the charges on N and O were 2 and 2-, respectively. (Include the formula for the calculation in your solution)

Write the following measurements and scientific notation: 1. 800,000,000 m 2. 0.0015 kg

Which is considered an indication that a chemical reaction or chemical change has taken place A:solid melts B: heat is given off C: substance dissolves D: Substance change shape

How are some of The physical properties of metals related to the fact that our study supply of electricity is able to reach our homes from electric generating plant

Which best describes a compound? O A elements that are chemically combined B elements that are physically combined c. elements that can be broken down into atoms D. elements that cannot be broken down into atoms

What term matches this definition - negatively charged particle in an atom?

A european automobile has a gas mileage of 14 km/L. What is the gas mileage in miles per gallon? Given-1mi=1.6093 km

Convert 1.21 kg to grams

Which of the following are inputs for the process of photosynthesis