Metrics system
What number is the metric system based on?
10
How many sig figs are there in 500,956,000?
6
What is the Kelvin temperature of a substance that has a Celsius temperature of 54 degrees?
327 Kelvin
What is the name of the lab item used to measure liquids?
graduated cylinder/beaker
How many sig figs are there in 5.896
4
What is the base unit for mass
gram
What would the temperature of a -26.9 degree Celsius sample be in Kelvin?
246.1 K
What is the Celsius temperature of a sample of water that has a Kelvin temperature of 263. Is this substance a solid, liquid, or gas?
-10 degrees Celsius solid
A student calculated the density of a sample of copper to be 7.96 g/cm^3. The accepted value is 8.96 g/cm^3. What is the students percent error?
11.2% error
How many sig figs are there in 0.00506900
6
How many meters are there in 5.69 mm
0.00569 m
How many milligrams are there in 3.49*10^12 micrograms?
3.49*109 mg
What is the mass of an object that has a density of 0.867g/cm3 and a volume of 24.3cm3? Will this object sink or float in water?
21.1 g
In an experiment the mass of a sample of citric acid is calculated to be 2.83 g. When the sample is weighed on an electronic balance the actual mass is found to be 2.74 g. What was the student's percent error in their calculation?
3 % error
When adding and subtraction how do you determine how many sig figs the answer should have?
least accurate or least amount of decimal places in the original numbers.
How many cm are there in an inch?
2.54 cm
How many inches are there in 5.12 dm
20.2 in
If a rock has a mass of 16.20 g and displaces a 15.0 mL container of water to the 23.6 mark. What is the density of the rock?
1.9 g/mL
In the lab you find that the atomic mass of oxygen in 18.0 amu. In all published texts, the value is 15.99 amu. What is your % error?
13% error
Calculate the answer with the proper sig figs 2.59 s * 6.8 s =?
18 s2
How many lbs are there in 4.15 grams?
0.00913 pounds
How many ft are there in 2.71*103 km?
8.89*106 ft or 8890000 ft
If a piece of copper has a density of 8.96 g/cm^3 and when placed into a container weighing 2.9 g creates a mass of 20.7 g. What is the copper's volume?
1.99 cm3
When completing an experiment students are to determine the density of a sample of magnesium. The students know that the density of magnesium is 1.74 g/cm^3. While completing the experiment the students determine the density of the magnesium to be 1.82 g/cm^3. What is the students percent error.
5 % error
Calculate the answer with proper sig figs (1.46 g + 7.801 g + 9.5 g)/2.784mL = ?
6.75 g/mL