The molecular formula for caffeine is C8H10N4O2. Which of the following elements is not found in caffeine?

Would an ice cube melts faster when you put food coloring on it

An element has 6 valence electrons available for bonding which group of the periodic table does the element most likely belong to? group 2 group 4 group 16 group18

Before the use of systematic names, many compounds had common names. Give the systematic name for each of the following: (a) blue vitriol, CuSO4° 5H20; (b) slaked lime, Ca (OH) 2; (c) oil of vitriol, H2804;

If a solution is saturated, which of these is true?

Which of the following is true of biochemistry

If 125 mL of a 1.1 M glucose solution is diluted to 500.0 mL, what is the molarity of the diluted solution? Express your answer using two significant figures.

What do you chemically call water?

Can beryllium be broken down by chemical change?

What is the total number of atoms in this formula? NaHCO3

An object was measured by a worker as 14.6 cm long, however, the manufacturer specifications list the length of the object at 14.4 cm. What is the percent error in the workers measurement