How many electrons represent a charge of -87 μC?

You are given a container with 100 g of hydrogen atoms. What is the total charge on the electrons in the container ?

How many electrons make up a charge of -70.0 μC?

What is the electric charge of 0.44 of a mole (NA = 6.023 × 1023) of alpha particles (ionized helium ions, He²+)? Express your answer in kilocoulombs, rounded to one decimal place.

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You have likely experienced "static shock" recently.  The magnitude of charge transferred when you walk across a carpet, reach out and touch a doorknob, and unintentionally give yourself that static shock is around 2.98 nC (nC stands for nano-Coulomb).  In units of Giga-electrons, about how many electrons are transferred when you experience static shock?  Note:  it is understood that the unit of your answer is in billions of electrons (hence Giga-electrons), however do not explicitly include units in your answer.

An object has an excess charge of -1.6 x 10 1 C. How many excess electrons does it have?

a red blood cell contains 5.2x10^7 free electrons what is the total charge of these electrons in the red blood cell ?

The number of electrons needed to go from -1.5 μC to -2.1 μC would be  ______________? The charge on an electron is 1.6 x 10^-19 C.