Question

1. What is the unit usually used for expressing the density of a gas?
2. Under normal conditions of temperature and pressure, what is the density of water? Show units.
3. If a substance has a mass of 75g and a volume of 250ml, what is it's density? Show all work and include units.
4. Define temperature. What instrument do we use to measure temperature?

5.

b. Under normal conditions of temperature and pressure rations of temperature and pressure, what is the density of water? Show us: 1. According to the densities listed in your text, indicated whether the following would sink or float in water a. Ethyl alcohol b. Helium c. magnesium d. rubber 00 nmes of 75 n and a volume of 250 mL. what is its density? Show all work and include

Answer 1

1. Density of the gas usually expressing in 1 4 • C to ene) . ( Арале іft Cor be afce. Under normal condition of temporrature and pressure. AT 20c waten density 998.2 kg som watere has highst density at 4c and density is 1000 kg/m3. 2. 3. Given Substane Given and substance of a mass (m): 75g -oots log voluna (2) - 250 m B 0.00096 m3 0.075 kg/m3 Density = ! 0.00025 - 300 kg son3. . Temparatas. A mansarse of the Worrmth or Coldness a an object with reterenu to some Stendard value. Temporratwe is measured with a Thermometen