What is the mass number of an atom which is made up of 27 protons, 33 neutrons and 27 electrons?

Water is a compound. Does water contain elements? Explain.

How do decantation and filtration differ which should be faster

How does the roots of most plants obtain food for suvival

Consider the reaction C2H4 (g) + H2O (g) - -> CH3CH2OH (g) calculate the equilibrium constant for this reaction at 298.15K.

The equation shows lead reacting with sulfuric acid to produce lead sulfate and hydrogen gas. pb (s) + 2SO4 (aq) - >PbSO4 (s) + H2 (g) Which type of chemical reaction does this equation represent?

What important natural resource do plastics come from? A. trees B. rocks C. minerals D. petroleum

What is a neutral atoms oxidation number

Suppose 30 grams of NaCl are placed in 900 mL of water. What is the molarity of this solution?

After a particularly cold day outside you go home to make some tea. you heat the water in the mug so that botch are about 75 degrees celcious. the tea bag is only 30 degrees celcious and the room is around 26 degrees celcious.

For main-group elements using the older numbering system the group number on the periodic table corresponds to which characteristic of the elements of that group