Chem Sapling HW R

Write the following numbers in scientific notation. a) 1061 b) 0.00081

Write the following numbers in standard orientation, maintaining the same number of significant figures. a) 6.104 x 10^2 b) 9.5 x 10^-3

Arrange these values according to magnitude. 7.5 x 10^-6 3.6 x 10^-2 2.4 x 10^5 9.0 x 10^-6 6.1 x 10^4

Identify the power of ten that defines each of these prefixes. nano- kilo- centi- micro- milli- mega-

Classify each phrase about weight and mass as true or false. mass and weight are the same thing mass and weight both depend on gravity your mass on the moon is the same as your mass on the Earth your weight on the moon is the same as your weight on the Earth

Several groups of students are attempting to determine the density of a lead weight by various methods. Their data is shown here. Gr1 Gr2 Gr3 Measured Trial 1 11.5 11.5 10.9 Densities Trial 2 11.3 11.4 11.3 (g/mol) Trial 3 11.1 11.4 11.1 Av. Density 11.3 11.4 11.1 The density of lead is listed as 11.3 g/mol Which group was more accurate? Which group was most precise?

Identify the number of significant figures in each of these values 702.50 80.30 0.020 11020 0.006 2000 67000

Round each number to three significant figures. a) 0.036549 b) 1044.987 c) 4.0007

To what decimal place should each answer be rounded? How many significant figures does the rounded answer have? a) 9cm + 2.8cm = 11.8 cm b) 0.135atm + 0.6atm = 0.735atm

0.00245m = ? pm

Convert 8.32 um to inches.

Your computer monitor has a width of 13.97 inches and a height of 10.48 inches. What is the area of the monitor display in square meters? How many significant figures should there be in your answer?

The surface temperature on Venus may approach 747 K. What is this temperature in degrees Celsius? The temperature on Mercury may drop to -271 degrees Fahrenheit at night. What is this temperature in degrees Celsius?

Use volume displacement to determine the volume of this metal sample to the nearest 0.1mL. The metal sample has a mass of 56.5g. What is the density of this metal?

If a bullet travels at 965.0 m/s, what is its speed in miles per hour?

Identify the principal type of energy (kinetic or potential) exhibited by each of the following. A car parked on a hill. A car traveling at 60mph. Chemical energy. A falling rock. Compressed air in a tank.