A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? A. 313.6 meters B. 78.4 meters C. 1,254.4 meters D. 39.2 meters

Why are chemists great for solving problems?

1. Balance the following equations: a. - C8H18 (1) + ___02 (g) + CO2 (g) + H2O (1)

Which of the following defines the wavelength of a wave? the speed that a wave is passed from particle to particle the distance between peaks of a wave the height of a wave between peak and trough the loudness of waves that travel through the air

How many moles of c6h14 contain 9.25 * 1024 molecules of c6h14?

Propose a mathematical equation to calculate the charge of an ion from the number of protons and electrons in an ion confirm that your equation Works using two positive ion examples and two negative ion examples

Which ionic compound is used as a building material? A. salt B. limestone C. magnesium oxide D. iron oxide

What is the twisted ladder shape of the DNA called? 3-D model nucleotides double helix single strand

How many moles of sodium nitrate NaNO3 would be produced from the complete reaction of 253 g sodium chromate Na2CrO4

The equilibrium constant for the production of carbon dioxide from carbon monoxide and oxygen is kc=2*1011 this means that the reaction mixture at equilibrium is likely to consist of

Arrange these compounds in order of increasing standard molar entropy at 25°C: C3H8 (g), C2H4 (g), ZnS (s), and H2O (l).