Gas A effuses 0.68 times faster than gas B. If the molar mass of gas B is 17 grams, what is the mass of gas A?

A combustion analysis of a 0.503 g sample of an unknown hydrocarbon yields 1.53 g CO 2 2 and 0.756 g H 2 2 O.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5 M HCl? Show all of the work needed to solve this problem. Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)

55. What information does a balanced equation provide?

As you move down group one of the periodic table, what happens to the atomic radii? They increase, because of the higher number of occupied energy levels. They increase, because of the stronger attraction between electrons and the nucleus.

How many grams of sodium is present in 2 moles?

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?

Which of the following statements about monosaccharide structure is true? A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.

Examples of chemical and physical changes

Is when hot parts of the earth rise as cooler parts sink due to differences in density.