Inorganic Chemistry Answers

what is the pH of 10^-6M solution of HCL

"what volume of oxygen will be needed to burn up 8grams of magnesium at room temperature pressure use a chemical equation to support your answer"

Please , I want to know each element content in its component ? Example :calcium %in dicalcium phosphate is 23 and phosphorus is 18 . what about zinc sulfate ,ferrous chloride ,copper oxide ..etc
Are there tables show the % of elements in its components?
Thanks Advanced

calculate the concentrations of each of the ion in .25M

which of the metal given an amphoteric oxide?

45g of salt are dissolved in 0.10l of solution.what is the concentration in g/l?

Magnesium combines with oxygen to form magnesium oxide. If 21.56 g of magnesium reacts completely with 5.41 g of oxygen, what is the percent by mass of oxygen in magnesium oxide?

. A student is given four solid samples labeled W, X, Y and Z. She is told that the solids
could be gold, lead (II) sulfide, silicon dioxide (quartz) and iodine. The results of her
investigation are: a) W is a good electrical conductor while X, Y and Z are not b) When the
solids are hit with a hammer, W flattens out, X shatters, Y is smashed into a powder and Z is
not affected c) When the solids are heated with a Bunsen burner, Y sublimes but X, W and Z
do not melt d) In treatment with 6M HNO3, X dissolves but there is no affect on W, Y or Z.
On the basis of these test results, identify the solids. (Show your reasoning)

What is more difficult to digest oil or sucrose

In the complete reaction of 18.17 g of sodium with 36.90 g of chlorine, what mass of sodium chloride is formed?