A sample of gas is held at 1000C at a volume of 20 L. If the volume is increased to 40 L,
what is the new temperature of the gas in Celsius? *

Drug abuse will not lead to physical and psychological dependence. true or false ?

What mass of ca(oh)2 is needed to make 1250ml of a .75m solution?

Boron has an average atomic mass of 10.81. one isotope of boron has a mass of 10.012938 and a relative abundance of 19.80 percent . the other isotope has a relative abundance of 80.20 percent what is the mass of that isotope? report two decimal places