<span>The correct answer is, Alkali Metals</span>
He valence of selenium depends on which compound it is in. Selenium is very similar to sulfur. It may have a valence of 6; example selenium hexafluoride SeF6, selenium trioxide SeO3
<span>4; example selenium tetrafluoride SeF4, selenium dioxide SeO2 </span>
<span>2; example selenium difluoride SeF2, selenium dichloride SeCl2 </span>
<span>and -2; example hydrogen selenide H2Se</span>
Answer:
Explanation:
Hydrosulfuric acid (H_2S) is considered a 'weak acid." It dissociates in water according to this reaction: H_2 S(aq) + H_2O(t) HS^-(aq) + H_3O^+(aq) k_a = 9 times 10^-8 Hydroiodic acid (HI) is considered a "strong acid".
Answer:
18 molecules of ATP will be produced for the breakdown of methionine to succinyl CoA and the entry of succinyl CoA to the citric acid cycle with no input of glucose.
Explanation:
Reactions reduced co enzymes ATP formation
α keto glutarate to propionyl CoA 2 NADH 6 moles
Succinyl CoA to succinate 2 GTP≈ 2 ATP
Succinate to fumarate 2FADH2 4 moles
Malate to oxaloacetate 2 NADH 6 moles
Answer:
Technetium, Promethium, Astatine, Francium
Explanation:
