Helium has a density of 0.017 g/L. What is the volume of a weather balloon that contains 83.4 g of helium?

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i