Examine the geometry of the species in the window below. Use the atom geometry to determine the nature of the bonds. • C = gray 0 = red H= white • Click and drag to rotate the molecule ball & stick + labels The hydrocarbon portion of the molecule is saturated. The configuration of the hydrocarbon chain is best described as The two-number code that categorizes the molecule is : O

6. (3 points) Hydralazine is a drug used to treat heart disease. It is 59.99% carbon, 5.03% hydrogen, and 34.98% nitrogen and has a molecular mass of 160.178 g/mol. What is the molecular formula for hydralazine?

15. Kkura found a sulfide ore in the dungeon which she identified to be chalcocite. While waiting for her debut, she read from a journal that grinding and "roasting" (heated strongly with oxygen gas) chalcocite can generate copper (1) oxide, a pigment used to color ceramics. Find the amount of copper(I) oxide she can produce from 53 grams copper(I) sulfide. Cu2S(s) + O2(g) –> Cu2O(s) + SO2(g)

7.(0-2) Elemental analysis of a sample showed that a certain organic compound contains 77.42% carbon, 7.53% hydrogen, and 15.05% nitrogen. Perform the appropriate calculations and answer whether the chemical compound analyzed could be aniline, an organic compound with the simplified formula given. NH,

Ff.175.

||| A ALEKS-Katelyn Pearson... 1 Apromatincat Rom Fecr] ATOMS, IONS AND MOLECULES Predicting the formula of ionic compounds with common... Write the empirical formula for at least four ionic compounds that could be formed from the following ions: OH, Fe²+, 103, NH b Answered. The following X O G

A 19.51 g sample of impure methylamine, which contains 72.58% (by mass) of CH;NH: , is reacted with 30.81 g of pure oxygen gas: 2.1 4CH, NH,(2) + 90,(8) - 4C0,(8) + 10H,0(?) + 2N;(8) 2.1.1 What is the percentage yield of this reaction if 5.54 g of nitrogen gas is collected? 2.1.2 In another experiment, this impure methylamine was used as follows: • An unknown mass of the impure compound is dissolved in enough water to make 500.0 m of solution. • 20 ml of this solution was transferred by pipette to a clean 250 ml volumetric flask and made up to the mark. • The molarity of the CH;NH; in the final solution was determined to be 0.103 M. Determine the mass of CH;NH; present in the original amount of impure compound used make this solution.

Q3(B) Balance the following chemical equations.

Budesonide is the active pharmaceutical ingredient in the Pulmicort Flexhaler, an inhaler used for daily prophylactic treatments for adults and children with asthma. The molecular formula for budesonide is C25H3406. What is the molecular mass of budesonide? molecular mass: amu/molecule

6. Consider the following chemical reaction: 2 Cr(OH)3(aq) >Cr₂O3(s) + 3H₂0(1) 12.00 moles of chromium (III) hydroxide is decomposed. Calculate moles of the water produced. O 18.00 moles O 1.500 moles O 4.00 moles O 12.00 moles