Which ester, when treated with NaOEt, gives this Claisen condensation product? 1. (CH_3)_2CHCH_2CO_2CH_2CH_3 2. (CH_3)_2CHCH_2CH_2CO_2CH_2CH_3 3. (CH_3)_2CHCH_2CH_2CH_2CO_2CH_2CH_3 4. CH_3CH_2CH(CH_3)CH_2CO_2CH_2CH_3

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

What can be found in the ionosphere