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

What is the mass of a 2.00 cm3 piece of balsa wood having a density of 0.160 g/cm3?

When an atom of n-14 is bombarded by an alpha particle, the single product is? a. 18/9 n b. 5/10 b c. 18/9 f d. 19/7 n?

In Organic Chemistry, what does the letter "X" represent? a. a hydrogen c. a carbon b. a halogen d. an alkane

A graduated cylinder contains 17.5 ml of water. When a metal cube is placed onto the cylinder, it's water level rises to 20.3 ml. What is the volume of the cube cm3

A 1.40 L sample of O2 at 645 Torr and 25 °C, and a 0.751 L sample of N2 at 1.13 atm and 25 °C, are both transferred to the same 2.00 L container at 25 °C. What are the partial pressures of the two gases and the total pressure inside the 2.

What does LeChatelier's principal mean

How many milliliters of a 0.7% stock solution are required to make 2 l of 0.2% solution? how many ml of solvent will be required to carry out the dilution?

What percentage of the naphthalene molecules emitted a photon?

In an endothermic reaction, heat is absorbed from the surroundings. How does this affect entropy? A. The particles in the surroundings move slower and have decreased entropy. B.

The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that must happen at the molecular level? A. The molecules move more quickly and their average kinetic energy increases. B.