Chem Chap 1 Let's Review
The boiling point of liquid oxygen is 90.2 K. What is this temperature in celsius?
-183.0 C
Round 0.00680483 to 3 significant figures
0.00680
What is the correct answer to the following expression: (205.18 - 197.3) / 6.226? Carry out the subtraction operation first.
1.3
Light with a wavelength of 1.5 X 10-8 m is in the x-ray region of the electromagnetic spectrum. What is the wavelength of this light in picometers?
1.5 X 104 pm
Which of the following is the smallest mass? 1.5 108 pg 1.5 106 ng 1.5 103 g 1.5 10-1 mg 1.5 10-5 g
1.5 X 10^-5 g
The boiling point of ammonia is -33.3 C. What is this temperature in kelvin?
239.9 K
If the density of nitrogen in air is 0.87 g/L, what mass (in kg) of nitrogen is contained in a room with dimensions of 4.0 m X 3.5 m X 2.4 m?
29 kg
The volume of space occupied by a beryllium atom is 6.0 X 10-30 m3. What is this volume in units of nm3?
6.0 X 10^-3 nm
Express 0.00720 in exponential notation
7.20 X 10^-3
Which of the following volumes are equivalent to 75 mL? 0.75 cm3 7.5 X 10-2 L 0.0075 L
7.5 X 10^-2 L
The SI unit of temperature is the ____.
kelvin
The SI base unit of length is the ____.
meter
