The temperature of a 46.9 L sample of NO is changed, causing a change in pressure from 647.7 kPa to 1,090.7 kPa. If its new temperature is 215.1 K and its new volume is 70.2 L, what was its original temperature in kelvins?

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n

How many neutrons does an element have if its atomic number is 50 and its mass number is 166