250 meters in 110 seconds what is the average speed in m/s

All of these may be classified as

All samples of a given compound, regardless of their source or how they were prepared, have the same proportions of their constituent elements. Which law does this refer to?

For a reaction in which a diatomic molecule dis - sociates into atoms, what are the signs of ΔS and ΔH? Explain your answer. You may use the reaction N2 (g) ⎯→ 2N (g) as an example of such a reaction.

10. What creates an area of high pressure air?

In which of the following are the amounts always equal in DNA? a. adenine and guanine b. cytosine and guanine c. thymine and cytosine d. cytosine and adenine

How has earth change during our current era?

What are the phase transitions in which heat energy is gained?

A cylinder contains 4.0 g of nitrogen gas. A piston compresses the gas to half its initial volume. Afterward, by what factor has the mass density of the gas increased?

The balanced equation below represents the reaction between magnesium metal and hydrochloric acid to produce aqueous magnesium chloride and hydrogen gas. Mg (s) + 2HCl (aq) = = > MgCl2 (aq) + H2 (g) A piece of Mg (s) has a volume of 0.

What is the molarity of a solution prepared by dissolving 33.4 g of sodium chloride in some water and then diluting the solution to a volume of 300.00 mL?