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Find the equation of the line passing through the points (0,3) and (-1,4). Write your answer in the slope-intercept form y=mx+b.

Solve the following equation, using the quadratic formula, for .  Express your answer as an integer or a simplified fraction.  

A balloon filled with argon gas has a small hole. An identical balloon filled with oxygen gas has an identical small hole. Which balloon will deflate first and  how much faster (aka rate ratio) will it deflate?

What is the percent composition by mass of boron in B10C2H12?

Type only your numeric response in the box (no units). Given the following thermochemical equation:   HNO3(g)  +  4H2(g) →  NH3(g)  +  3H2O       ΔH = -637 kJ/mol Calculate ΔH when one mole of hydrogen gas reacts  [H2] kJmol   2. What is ΔH when 10.00g of NH3(g) is made to react with an excess of steam to form HNO3 and H2 gases? [heatNH3] kJ      

An atom with the electron configuration [Ar]4s23d104p5 is a ___________.

Perform the following calculations, to the correct number of significant figures. a.   432.0 + 7.3 – 28.523 [A] b.   (455/400.1) + 1.379 [B]  

Show all your work for the following problem in the space below: a.  Use standard enthalpies of formation below to calculate ΔHrxn for the reaction:      3Fe2O3(s) + CO(g) → 2Fe3O4(s) + CO2(g) b.  Is the reaction exothermic or endothermic? Table of Heats of Formation Compound ΔHf (kJ/mol) Compound ΔHf (kJ/mol) CaO(s) -635.5 CuSO4(s) -769.9 Ca(OH)2(s) -986.6 Fe2O3(s) -822.2 CaSO4(s) -1432.7 Fe3O4(s) -1120.9 CCl4(l) -139.5 HBr(g) -36.2 CH4(g) -74.8 HCl(g) -92.3 CHCl3(l) -131.8 HF(g) -268.6 CH3OH(l) -238.6 HI(g) +25.9 CO(g) -110.5 HNO3(l) -173.2 CO2(g) -393.5 H2O(g) -241.8 H2O(l) -285.8 NH4Cl(s) -315.4

What is the percent of water in Cu(ClO4)2•6H2O?     Enter only your numeric answer below. Do not include the % symbol or any other units.

The molecular geometry of BrF5 is [geo1].