How are the sizes of stars measured?

I just need a simple answer

Why is the atomic radius of sodium much smaller than the atomic radius of potassium

The molar mass of the compound is 80.0 g/mol. What is the mass of one mole of the compound?

Identify the strongest intermolecular force that is likely to affect each of the samples described below. A mixture of chlorine gas (Cl2) and fluorine gas (F2): A) Hydrogen bonding B) Dipole-dipoloe interactions C) London dispersion forces

Will chlorine gas effuse more quickly than ammonia gas

Drawing conclusions about all of humanity based on research using only males as subjects is the problem called: a. androcentricity. b. overgeneralization. c. gender blindness. d. using double standards.

What was the result of the atomic theory?

Explain mitosis and meiosis in your own words.

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch

Reaction rates are affected by how often the particles collide true false

A 25 N and 5 N force pull to the right. Friction is 10 N. If the object is 5 kg, find the net force and acceleration.