Electrical Circuits
Define Electrical Current
the movement of electrons
A Ground Fault Circuit Interrupter Outlet used to decrease the risk of electrocution through the presence of water is normally referred to as a:
GFCI
This particle has zero mass and a negative -1 charge
electron or beta particle
This radioisotope is used in the age determination of once living tissue
carbon-14
Acid + Base
Salt and Water
What are the units for Resistance?
ohms
This device is place in a circuit to protect it from overload and possible fire or the corruption of wiring
Circuit Breaker
This is the amount of time that it requires for a radioactive sample to decrease to 50% of its original mass
half life
This radioisotope is used to detect bone tumors
technecium-99
Name two things about an Acid
Neutralize bases, weak acids are sour if tasted, yield H+, corrosive
V=IR
Ohm's Law
Name three things that an electrician can do to decrease the risk of electrocution
Wear gloves, shut the power, avoid contact with water, use a voltage tester, avoid contact with metallic parts of wires.
What fraction of a radioisotope would be present after 4 half lives?
1/16
Iodine-131 is used to:
treat and diagnose thyroid disorders
Name the Salt when HCl reacts with KOH
KCl
Rt=R1 + R2 +R3
Resistance Formula for Series Circuits
This refers to outlets that can prevent wire fires through arcing, or the jumping of electricity.
Arc Fault Circuit Interupters
How many grams of 96 gram sample of iodine -131, with a half life of 8 days, will be present after 40 days?
3 g
Strontium-90 can:
replace calcium in bones and cause radiation poisoning
this is the Molar Mass of CaCl2
110.9 g/mol
This is the voltage across one of two 4 ohm resistors wired in parallel with a 12 volt power source.
12 volts
This is the process which prevents errant electrical currents from causing electracution by providing a pathway for the current back to earth
Grounding
Explain the mass and charges of both positrons and alpha particles
alpha =mass 4 amu charge + 2
Positron=mass of 0 amu charge of + 1
These can be used in chemicals to determine the mechanism of a process
tracers
How many moles in 117 grams of NaCl?
2 moles