A flask with a volume of 250.0 mL contains air with a density of 1.211 g/L. What is the mass of the air contained in the flask?

Which of the following is a component of a proton? up quark neutron electron gluon

What happens when energy is removed from liquid water

What could J. J. Thomson conclude from his experiments? A) Atoms are mostly empty space. B) Most of the mass of the atom is concentrated in the center. C) Atoms must balance positive and negative particles. D) Atoms are indivisible.

How many electrons does nitrogen have in its outer energy level?

How does heat affect a water droplet's state of matter

The most important reason why solid sodium hydroxide is not used as a primary standard is

plate a and plate b are both continental plates. what is ghe most likely result if the two plates collide?

According to the second law of thermodynamics, the entropy of any system always increases. According to the second law of thermodynamics, the entropy of any system always increases. True False

If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

A piece of iron can change in different ways. How is iron bending different from iron rusting?