Measuring
What is the unit for mass?
Grams (g)
What determines if something floats or sinks?
Density
What is kinetic energy?
The energy based on movement
What is the relationship between temperature and volume of a gas? why?
Proportional because when the temperature(kinetic energy) decreases the particles move less and take up less space
What is the ideal gas constant?
0.082 L*atm/mol*K
What is the unit for length?
meters (m)
What is the density of an object that weighs 3.2 grams y takes up 5.2 ml of space?
0.615 g/mL
What happens to the space between particles when the kinetic energy increases?
The space between the particles increase
A balloon contains 25.1 L of gas at 2.00 atm then the volume decreases to 7.2 L. What is the final pressure?
6.97 atm
61 L
How do we measure mass in this class?
Trible beam balance
An object has a mass of 158 g and has a density of 3.15 g/mL. What is the object's volume?
50.2 mL
What is the relationship between the volume and temperature of a liquid? why?
Proportional/linear because when you increase the temperature, the volume increases
What is the relationship between pressure and volume? why?
Inverse because when the volume decreases, it increases the wall collisions(pressure)
A balloon contains 42.6 L of gas at 1 atm and the temperature is at 298 K? How many moles does the balloon contain?
1.74 moles
What is uncertainty?
It is the error in a measurement.
What is the relationship between mass and volume? why?
The relationship is proportional/linear because volume changes with mass
What is the relationship between temperature and kinetic energy? why?
proportional/linear because when the energy increases the collisions increase between the particles increasing the temperature
A container contains 50.0 L of nitrogen at 298 K. What is the temperature if the volume increased to 53.5 L?
318.9 K
3.8 moles of a gas with a 1.5 atm, the volume is 2.6 L. what is the temperature?
12.5 K
How do we measure the uncertainty of a tool?
It is half of the smallest measurement
What is the relationship between mass and density? why?
The relationship is a horizontal line because density does not change with mass.
What is the relationship between temperature and density of a liquid? why?
Inverse because when you increase the temperature, the volume increases making the density decrease.
A balloons contains 2 L of a gas at 2.5 atm, a temperature of 298 K. The pressure increases to 3 atm, la temperature increases to 325 K. What is the final volume?
1.82 L
The pressure is 2.2 atm, the volume is 30 L, there are 1.6 moles of gas and the temperature is 502 K. What is R?
0.082 L*atm/mol*K