A train travels 74 kilometers in 3 hours, and then 73 kilometers in 2 hours. What is its average speed? km/hr

Which statement is true about the speed of heat transfer by conduction? It is fastest in gases because their particles move at a faster rate. It is fastest in liquids because their particles are not strongly attracted to each other.

The heat of vaporization of water is 40.66 kj/mol. how much heat is absorbed when 2.46 g of water boils at atmospheric pressure?

What is the final stage of cell division where the cytoplasm is divided among the two new daughter cells? A) G1 B) anaphase C) cytokinesis D) interphase

What do 2 or more atoms form when they share electrons in a chemical bond element mixture ionic compound molecule

How does radiant heat from the Sun affect the water cycle? A. It causes precipitation. B. It causes evaporation. C. It causes cloud formation. D. It causes surface run-off.

What fraction of carbon 14 remains in an animal frozen in a glacier 18000 years ago?

How do you convert the number of molecules of a substance to the number of moles? a. add Avogardo's number b. subtract Avogardo's number c. multiply Avogardo's number d. devide Avogardo's number

Give 3-5 pieces of evidence to support why cloning is bad.

Nitrogen combines with oxygen to form nitrogen monoxide (no) and nitrogen dioxide (no2). a sample of no consists of 1.14 g of oxygen and 1 g of nitrogen.

The modern periodic table reflects many improvements to Mendeleev's original table. If Mendeleev's table was incorrect, why is it still studied in chemistry classrooms today?