What is the pressure in atmospheres of a 0.108mol sample of He gas at a temperature of 20.0°C if its volume is 0.505L?

a. 5 atm

c. 5.1 atm

b. 4.86 atm

d. 5.14 atm

A car starting from rest accelerates at a rate of 8.0 m/s/s what is its final speed at the end of 4.0 seconds

What elements are good conductors of electricity?

In 2005 a planet was found revolving about a distant sunlike star in 4.01 days. The radius of its orbit is 2 comma 600 comma 000 mi. What is its linear velocity (in mi/h) about its star?

A motorcycle at a stoplight takes 5.22 seconds to accelerate to a speed of 33.0 m/s after the light turns green. What is the average acceleration of the motorcycle?

Why are the phases of the Moon so predictable that they can be published on calendars that are printed at least a year ahead of time?

A boulder on the mythical planet mongo drops off a cliff and falls from rest 1000 m in 10.0 s. (A) what's the initial speed of the Boulder? (B) determine the acceleration due to gravity on mongo. Ignore friction.

The half-life of carbon-14 is 5730 years. How long will it take for the number of carbon-14 nuclei in a sample to drop to a quarter of the original number? Enter your answer as a number years

Which object has more thermal energy a bowl of soup or pot of soup

When you look into a clear pond, a fish may appear to be in a different position than it actually is. What is this caused by? A. diffraction B. dispersion C. refraction D. reflection,

How long would it take to drive to alpha centauri (4.4 light-years away) ?