Significant figures
Find the significant figure for 897542.
8.98*105
What is the specific heat equation?
q=m*c*Tf-Ti
Define wavelength.
Wavelength is the distance between crests of a wave.
What is a force?
What are the parts of an atom?
The parts of an atom are protons, electrons, and neutrons.
Find the significant figure for .00000897678.
8.98*10-6
What is the specific heat of water?
4.18cal/g*c
Define frequency.
Frequency is the number of occurrences of a repeating event per unit of time.
Whats factors affect gravity the force of gravity?
The size and weight.
How many electrons does a calcium atom have?
It has 20 electrons.
Convert 45.987 picometers into meters.
4.6*10-11
Solve:
-126.5242J=(432g)(4.184J/g*c)(18-Ti)
71
Define energy.
Energy is the capacity for doing work.
What is gravity?
Gravity is the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
How many electrons does nitrogen have to gain/lose for it to have a complete shell?
It has to gain 2.
A yacht travels at 23.7 knots at full speed. A knot is the same as a nautical mile per hour. A nautical mile is 1.852 kilometers. What is the full speed of the yacht in meters per second?
12.2m/sec
Solve:
q=5750J
m=455g
c=0.12cal/g*c
Tf=?
Ti=24*c
Tf=49*c or 4.9*101*c
If a wavelength is increasing(shorter waves) and the energy is increasing what relationship is it?
Inverse relationship.
What is the equation for gravity?
Fg=Gm1m2/r2
What is the formula for Aluminum and Chlorine?
AlCl3
If someone working at a gas station pumps 0.697 megaliters in just one day. How many centiliters per hour is this?
2904166.66cL/h
Find the specific heat fot the metal.
q=-1410
m=34.5g
c=?
Tf=22.5*c
Ti=99*c
5.3*10-1 cal/g*c
What is the equation for waves?
E=frequency/wavelength
What force holds the atom together?
The electrical or electromagnetic force
What is the name of Sn2O3?
Tin(III)Oxide