Calculate
Which is equivalent to 150 L?
a. 1.50 kL
b. 150,000 cL
c. 150,000,000 uL
d. 15,000 kL
C. 150,000,000
How many significant figures are present in 800.0?
4
What is a mixture?
Physical blend of 2+ substances
I have no definite shape or volume
gas
I am the force that holds molecules together
Intermolecular force
How many mL are in 1,890 kL? Write your response in scientific notation.
1,890,000,000
1.89 x 109
1 pm is how many meters?
10-12
A. Hydrogen
B. Oxygen
C. Potassium
D. Gold
D. Gold
I have no definite shape but definite volume
liquid
Temperature measures me
What is average kinetic energy
Convert the melting point of mercury to Celsius.
237-273=-36
A 45 mL sample of magnesium will have what mass?
1.74=x/45
x=78 g
A sample is put through a funnel containing filter paper. The sample leaves behind a brown solid on the filter. What do we know about the composition of the sample?
heterogeneous mixture
I exist at the lowest temperatures with the highest intermolecular forces
solid
I can be physically separated
What is a mixture
A substance was found to have a mass of 70.900 g and a volume of 30.2 mL.
How many significant figures should the density be reported to?
3
SHOW ALL WORK
150,000
A student found the mass of CO to be 32 u. It is actually 30. What is the percent error?
7%
If the average kinetic energy of a sample increases, what happens to its density?
Decreases
I can be decomposed by chemical change
Determine the mass of CO2 that results from the formation of 98 g C and 164 g O.
98+164=262 g CO2
What is the melting point of lithium in Celsius?
454-273=181 C
Which one cannot be decomposed by a chemical change?
Co, CO, CO2, CoO
Co
How can a solution of NaCl be separated?
Evaporation
I am the same throughout yet am mixed with water.
What is a solution?