Which of the following elements is commonly found in the Earth's crust, living matter, oceans, and atmosphere? hydrogen, neon gold or bromine?

Blank is the amount of space that a material takes up

Which of the following is an advantage of using an electronic balance instead of a triple beam balance? A. quicker and easier to use B. less chance of user error C. higher level of precision D. all of these

How important is the thymus gland keeping your body free from diseases?

The basic structure of an amino acid contains the amine group, NH2, and a carboxylic acid group separated by one or more carbon atoms. TRUE FALSE

Explain using information fro the reference table why symbol (aq) is used to describe the product ZnCl2

How should scientist respond when new evidence that challenges current is presented?

Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium pressure of H2. D2 (g) + H2 (g) ⇌ 2 HD (g) Kp = 1.80 P (D2) eq = 1.1 * 10-3 atm P (HD) eq = 2.7 * 10-3 atm

Find δe for the change in state of 1.0 molh2o (l) at 79 ∘c to h2o (g) at 116 ∘c. the heat capacity of h2o (l) = 75.3 j/molk, heat capacity of h2o (g) = 25.0 j/molk, and the heat of vaporization of h2o is 40.7*103j/mol at 100 ∘c.

Balloon A started with a volume of 1.76 L. The temperature of the room the balloon was in was 295 K. The balloon was heated to a temperature of 253.15 K. What is the new volume?

The standard internal energy change for a reaction can be symbolized as ΔU°rxn or ΔE°rxn. For the following reaction equations, calculate the energy change of the reaction at 25 °C and 1.00 bar. Sn (s) + Cl2 (g) - - - > SnCl4 (l) + H (KJmol) - 511.3.