As you go down a group the elements generally become (more/less) metallic.

In which of the following are the amounts always equal in DNA? a. adenine and guanine b. cytosine and guanine c. thymine and cytosine d. cytosine and adenine

Writing about interesting place in your country

How many orbitals are in the p sublevel? a. 1 b. 3 c. 5 d. 7

Jason combines the two intermediate steps shown. Na (g) + O2 (g) - >2NO (g) 2NO (g) + O2 (g) 2NO2 (g) Which best describes what Jason should do with the oxygen molecules? Place two of them as products. Place two of them as reactants.

Where do the materials that we use to make plastic bags, crayons and polyester (for clothes) come from?

What is an example of making a qualified observation

With respect to composition, how is the compound made from hydrogen and oxygen different from mixtures of these two elements?

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.