Calculate the mass of water produced when 2.06 g of butane reacts with excess oxygen.

Which of these is characteristic of the photic zone of a freshwater biome? Which of these is characteristic of the photic zone of a freshwater biome?

Which of the following is not an indication of a chemical reaction? A) a substance dissolves B) formation of a precipitate C) color change D) the container gets cold

Which of the following is NOT a basic feature of an electric circuit? a. resistor c. single throw b. cell d. wire

What in matter can change

How many moles of hydrogen gas (h2) would be produced from the reaction of 0.30 moles of water (h2o) and excess sodium? (na) ?

In which one of the following solutions is silver chloride themost soluble? A. 0.744 M LiNO3 B. 0.0176 M NH3 C. 0.181 M HCl D. 0.181 M NaCl E. pure water

A 5.701 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 12.28 grams of CO2 and 5.029 grams of H2O are produced. In a separate experiment, the molar mass is found to be 102.1 g/mol.

One amu is equal to the mass of an electron the mass of one proton or one electron the mass of one neutron or one electron the mass of one neutron or one proton

Given an unknown mixture consisting of two more substances, explain how could you determine whether that mixture is a true solution, a colloid or a suspension

Which isotope of lithium has 3 neutrons?