Where do convection currents occur?

O A. In areas with the same temperature

B. In areas with different cloud types

C. In areas with the same altitude

D. In areas with different air pressures

How do you predict the correct formula for the combination reaction between a nonmetal and a group a metal?

How many moles of H2 are produced from 5.8 moles of NH3 2NH3 - > N2 + 3H2 How many moles of O2 are needed to produced 1.8 moles of H2O? C3H8 + 5O2 - > 3CO2 + 4H2O

What number on the periodic table determines the number of electrons lost or gained?

What was the initial temperature of a gas contained in a 2.0-L bottle at a pressure of 1.00 atm if it was placed under vacuum and its pressure was reduced to 0.82 at mat a temperature of 10.0º C? Assume pressure remains constant

What does all flexible objects have in common

What is the thermochemical equation for the combustion of methane. Methane formula: CH4 (g) and the deltaH comb - 891 (kJ/mol)

What is the mass of one mole of an element that has aan atomic mass of 6.94?

Zhang is designing protective packaging. He tests his design by dropping a raw egg protected by his packaging from various heights. He finds that the egg is protected up to a height of 11 meters.

An element with a single electron in its highest energy level is probably

Chemical bonds are likely to form when A. two atoms have the same number of electrons. B. an atom's outer energy level doesn't have the maximum number of electrons. C. an atom's nucleus has the same number of protons as neutrons. D.