When communicating with apollo astronauts, there is approximately a 1.3 second delay in one-way communication. this is because

a)
space is a vacuum.

b)
the moon has virtually no atmosphere.

c)
radio waves travel at a speed of 186,000 miles/s.

d)
of the scattering of electromagnetic waves in space.

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Which metal exist in liquid state and can be cut with knife ?

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m