A spaceship with a mass of 2.8 × 106 kg is traveling toward two spherical asteroids, each with a mass of 5.0 × 1016 kg, that are 40 km apart center-to-center. Its path is perpendicular to the line joining the asteroids and is aimed at the midpoint of that line. What is the net gravitational force exerted by the asteroids on the spaceship when the spaceship is 30 km away from that midpoint? (G = 6.67 × 10-11 N ∙ m2/kg2)

If a 68.2 g sample of ammonium nitrate is dissolved in enough water to make 315 mL of solution, what will be the molarity?

Calculate the mass of silver nitrate (in grams) in a 100 mL solution of 4.28 M AgNO3. (Ignore significant figures for this problem.)

This disease is characterized by white patches on the inner cheeks, tongue, roof of the mouth, and throat that leads to the inability to drink or eat.

An acute infectious disease associated with Epstein-Barr virus that is characterized especially by fever, sore throat, swelling of lymph nodes, fatigue, and lymphocytosis and occurs primarily in adolescents and young adults is called _____________________.

A mixture of sand and water is a(n) _____.

Calculate the volume of 0.1 M KOH required to neutralize 300 mL of 0.500 M HCl.

Which of the following are symptoms of rabies? 

All of the following are symptoms of the flu Except ____________.

What is the normality of a 0.300 M solution sulfurous acid, H2SO3?