Each atom in a 7.0 microgram piece of calcium (A=40, Z=20) has one electron removed. What is the total charge collected in this way?
A. 34 mC
B. 670 mC
C. 17 mC
D. 60 mC
C. 17 mC
You might also like to view...
Is it possible for each of three current-carrying metal wires to repel the other two wires?
1.yes 2.no
What is the magnitude of the electric field 2.8 cm from a tiny object that carries an excess charge of -16 nC? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A) 180,000 N/C B) 5100 N/C C) 1.8 × 1014 N/C D) -180,000 N/C E) -5100 N/C
With only two exceptions, if a nucleus contains fewer ______________ than ______________, it is unstable
a. protons; neutrons b. neutrons; protons c. protons; alpha particles d. protons; beta particles
200 g of ice at 0°C is dropped into a calorimeter of negligible heat capacity containing 350 g of water at 20°C. What is the temperature of the system when it reaches equilibrium? The latent heat of fusion of water is 80 cal/g
A) 0°C B) 24°C C) -13°C D) 13°C E) -24°C