How many moles of hydrogen are in 2.8 moles of caffeine

The moles of hydrogen in given moles of caffeine are 28 moles.

Explanation:

We are given:

Moles of caffeine = 2.8 moles

The chemical formula of caffeine is

In 1 mole of caffeine, 8 moles of carbon atoms, 10 moles of hydrogen atoms, 4 moles of nitrogen atoms and 2 moles of oxygen atoms are present.

So, in 2.8 moles of caffeine, moles of hydrogen atoms present will be moles

Hence, the moles of hydrogen in given moles of caffeine are 28 moles.

35. a insulated cylinder of solid gold (k 310 kw/m-k) of radius v2 m and height 5 m is heated at one end until the temperature at each point in the cylinder is given by w(r, y, z) (30 z2)(2-(r2+ y2). determine the rate of heat flow across each horizontal disk given by z 1, z 2, and z 3, identifying which has the greatest rate of heat flow across it.

explanation: