The ground-state electron configuration of Sn Si As is [Ar]4s23d¹04p².

Which of the following are exothermic reactions and which are endothermic? (a) the burning of methane O exothermic O endothermic (b) the explosion of dynamite O exothermic endothermic (c) the combination of zinc and sulfur to form zinc sulfide O exothermic O endothermic (d) the burning of iron in chlorine O exothermic endothermic (e) the neutralization of a strong acid by a strong base O exothermic endothermic (f) the burning of methane O exothermic O endothermic

please answer quickly thank u

Relea

make sure that the limiting reagent is magnesium and please calculate the theortical yield

2. For, 4 CuzN (s) + 3 02 (g) → 6 Cu20 (s) + 2 N2 (g) (a) Find the mass of Cu,0 formed by using 6.0 grams of copper (1) nitride, Cu;N. Given amount Answer Work (by dimensional analysis) and units with units (b) Find the mass of Cu,0 formed by using 1.0 g of oxygen, 0,. Given amount Answer Work (by dimensional analysis) and units with units (c) Which reactant is the limiting reactant? (Cu3N or 02)

Ma X ATM HOMEWO X #5112480241329813180832311&eISBN=9781305862883&id=1707785907&snapshotid=33... D21 Grades - X G when doe X References Submit Answer MindTap x G Match ea X Use the References to access important values if needed for this question. Under certain conditions, the substance hydrobromic acid can be broken down to form hydrogen and bromine. ervation of Mass: Macroscopic: This is group attempt 1 of 10 Autosaved at 7:17 PM ☆ If 22.3 grams of hydrobromic acid react to form 0.3 grams of hydrogen, how many grams of bromine must simultaneously be formed? grams bromine Ch.2: Ato- Q Search Regenerat

A lab sample containing sodium chloride, ammonium chloride and sand.  It initially weighs 3.207 grams, prior to heating.  After heating that sample weighs 2.971 grams. What is the percentage of ammonium chloride in that initial mixture?  Answer with the percentage, but do not include the percent sign.

Complete the reactions below with appropriate reaction conditions, make sure that your set of reaction conditions produce the indicated product as a major product. Please indicate clearly whether the reaction conditions occur in one or several distinct steps. Reaction Conditions Reactant Product a) Br b) OH c) HO

51 to str piensquast leniladi di ei tedW In a process for obtaining pure copper from copper ore, 55.6 g of copper metal was obtained. Is this the theoretical it ton yield or actual yield?