Evidence suggests that giraffes once had short necks. how does natural selection explain why giraffes now have long necks

Which electrons in a calcium atom in the ground state have the greatest effect on the chemical properties of calcium

Liquid nitrogen has a density of 0.807 g/ml at - 195.8 °c. if 1.00 l of n2 (l) is allowed to warm to 25°c at a pressure of 1.00 atm, what volume will the gas occupy? (r = 0.08206 l*atm/k*mol)

What name should be used for the ionic compound FeBr3

Explain the difference between a sea-level transgression and regression.

An insulated box is initially divided into halves by a frictionless, thermally conducting piston.• On one side of the piston is 1.5 m3 of air at 400 K, 4 bar.• On the other side is 1.5 m3 of air at 400 K, 2 bar.

How much CO2 is produced from 10g of CH4?

Two components combine to create a binary ionic compound. Name one of them

True or false. The synthesis of giant molecules from components of repeating units is polymerization.

Which term names an environmental cost of fossil fuel consumption? A. cheap energy B. increased greenhouse gases C. renewable resource D. low pollution

Slowly heating butter in a pan until it changes from a solid to a liquid is an example of a physical change. True False