What is tissue onion make of?

What do you know about two atoms if their atomic numbers are different

Hydrogen sulfide, H2S (molar mass 34 g/mol), which smells like rotten eggs, and hydrogen cyanide HCN (molar mass 27 g/mol), which smells like bitter almonds. Both gases are poisonous.

Predict the major products when isopropylbenzene is irradiated by light and treated with excess br2.

Most organisms breathe using oxygen or carbon dioxide. Where do these gases come from on land? air offspring homeostasis shelter

Electronegativity tends to increase from left to right across a row, because A. the number of energy levels increases. B. the shielding effect increases. C. the attraction between the nucleus and the valence electrons increases. D.

Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and potassium chloride when heated. KClO3 (s) → KCl (s) + O2 (g) [unbalanced] How many grams of oxygen are formed when 26.4 g of potassium chlorate is heated?

What element is represented by: 1s^2

Separate samples of a solution of an unknown soluble ionic compound are treated with KCl, Na2SO4, and NaOH. A precipitate forms only when Na2SO4 is added. Which cations could be present in the unknown soluble ionic compound?

What is the pH of 0.50 M H2S (given that Ka=8.91 x 10^-8) ? A. 3.7 B. 1.7 C. 6.9 D. 3.6

With respect to NO and For the reaction NO + O 3 NO 2 + O 2, the reaction was expressing concentrations as molarityare the units of the found to be first order both with respe rate constant k for this reaction?