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3 years ago

What is the molar mass of C8H10N4O2

Physics

2 answers:

Mila [183]3 years ago

4 0

Answer:

194.19 g/mol

Explanation: In calculating the molecular weight given the molecular formula of a compound, we must first determine the type and number of atoms present. For caffeine with a molecular formula of

, there are 8 carbon atoms, 10 hydrogen atoms, 4 nitrogen atoms, and 2 oxygen atoms. Next, we must look for the molar masses of each atom in the periodic table, then multiply them by the number of the atom in the compound. Carbon (C):

12.01 gmol

96.08 gmol Hydrogen (H):

1.008 gmol

10.08 gmol

Nitrogen (N):

14.01 gmol

56.04 gmol

Oxygen (O):

16.00 gmol

32.00 gmol

Finally, we can now calculate for the molecular weight of caffeine simply by adding the total molar masses of the constituent atoms:

96.08 gmol

10.08 gmol

56.04 gmol

32.00 gmol

194.20 gmol

Therefore, caffeine has a molecular weight of 194.20 g/mol.,

lesya [120]3 years ago

3 0

Answer:

194,22g/mol

Explanation:

8*12,01+10*1,01+4*14,01+2*16=194,22g/mol

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The complete question is below:

Particle A and particle B, each of mass M, move along the x-axis exerting a force on each other. The potential energy of the system of two particles assosicated with the force is given by the equation U=G/r 2, where r is the distance between the two particles and G is a positive constant. At time t=T1 particle A is observed to be traveling with speed 2vo/3 to the left. The speed and direction of motion of particle B is ?

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