How much positive charge is in 1.3 kg of helium? The atomic weight (4.0026 g) of helium contains Avogadro’s number of atoms, with each atom having 2 protons and 2 electrons. The elemental charge is 1.602 × 10−19 C and Avogadro’s number is 6.023 × 1023 . 1. 3.65671 × 107 2. 3.37722 × 107 3. 4.1138 × 107 4. 4.71084 × 107 5. 2.91926 × 107 6. 6.26767 × 107 7. 5.83852 × 107 8. 1.14874 × 108 9. 7.17219 × 107 10. 2.74253 × 107 Answer in units of

A typical AA size rechargeable NiMH battery can store 1100-2100 mAh of electric charge. The small print on the battery in your hand says 1530 mAh. Can you express this amount of electric charge using the usual coulomb units? You are now charging a camera battery. The charger moves 4470 C of electric charge from the negative terminal of the battery to the positive terminal. (In reality the charger moves the negative electrons from the positive terminal to the negative terminal, but this is not important for us right now.) Assuming - incorrectly - that the voltage of the battery remains a constant 3.20 V during the whole charging process, determine the work done by the charger. And now you are charging a capacitor bank for a high-voltage physics experiment. The power supply moves Q = 8990 C of electric charge in the charging process. The supply is set to stop, when the voltage reaches AV = 710 V. How much work did the power supply perform?

A system of 1358 particles, each of which is either an electron or a proton, has a net charge of -1.002x10-16 C. How many electrons are in this system (exactly)? Submit Answer Tries 0/32 What is the mass of this system (to three significant digits)?

A system of 1455 particles, each of which is either an electron or a proton, has a net charge of −6.704×10−17 CC . What is the mass of this system?