Inorganic Chemistry Questions

An unsaturated fatty acid is converted to a saturated fatty acid in the presence of hydrogen (H₂) and a catalyst. Identify the type of reaction. Hydrolysis Hydrogenation Saponification Esterification I DON'T KNOW YET

How many lone pairs are on the central atom in BC13? How many lone pairs are on the central atom of BrF3?

What type of interaction could occur between the side chains of a serine and a threonine residue? Disulfide bond Ionic bond or salt bridge Hydrogen bond Hydrophobic I DON'T KNOW YET

What is the bond order of F- OF? What is the bond order of O2 ?

All three of the boron-fluorine single bonds in BF3 are polar. In which direction should the polarity arrows point? to the right to the left toward the central boron atom away from the central boron atom

A triacylglycerol is reacted with water and a strong acid to yield glycerol and three fatty acid molecules. Identify the reaction type. Saponification Hydrolysis Hydrogenation Esterification I DON'T KNOW YET

Predict which fatty acid would have the lowest melting point. CH₂(CH₂CH=CH),(CH₂),COOH (cis configuration) CH₂(CH₂) COOH CH (CH₂) CH-CH(CH₂) COOH (cis configuration) CH (CH) CH-CHCH₂CH-CH(CH) COOH (cis configuration) I DON'T KNOW YET

What is the classification of the enzyme that catalyzes this reaction? ATP + protein → ADP + phosphoprotein Oxidoreductase Ligase Transferase Isomerase I DON'T KNOW YET

Calculate the pH of a solution formed by mixing 65 mL of a solution that is 0.26 Min NaHCO3 with 75 mL of a solution that is 0.22 Min Na2CO3.

According to Schaie, an individual in the responsible stage is capable of using knowledge to pursue goals. Solving practical problems associated with responsibilities to others. reorganizing his/her life and intellectual energies around meaningful pursuits. acquiring knowledge for its own sake.

Which of the following statements are true of acids and/or bases. Select all that apply. Bases have a sour taste. Acids have a sour taste. Bases generate H+ ions in water. Acids generate H+ ions in water. Ammonia is a common acid An Arrhenius base generates protons in water.

The empirical formula of a certain hydrocarbon is CH₂. When 0.125 moles of this hydrocarbon is completely burned with excess oxygen, it is observed that 8.40 Liters of CO₂ gas are produced at STP. What is the molecular formula of the unknown hydrocarbon? a) CH₂ b) C₂H4 d) C3H₁ e) C4H8 c) C₂H₂

Calculate [H] for each of the following solutions at 25°C, and state whether the solution is neutral, acidic, or basic. a. 3.7x10-4 M OH™ b. 2.9x10-9 MOH™ HOW DO WE GET THERE? What is [H] for a solution with 3.7×10-4 M OH at 25°C?

A sample of methane gas at a pressure of 0.721 atm and a temperature of 27.4 °C, occupies a volume of 11.9 liters. If the gas is allowed to expand at constant temperature to a volume of 20.2 liters, the pressure of the gas sample will be ___ atm.

Glucose is consumed in the presence of oxygen to afford carbon dioxide and water as shown in the balanced reaction: 602 + C6H1206-> 6CO2 + 6H20 If one mole of Glucose is allowed to react with 5 moles of oxygen, which statement is correct? A oxygen is the limiting reactant B. Glucose is the limiting reactant C water is the limiting reactant D. carbon dioxide is the limiting reactant

A mixture of nitrogen and methane gases, in a 6.75 L flask at 12 °C, contains 5.48 grams of nitrogen and 2.74 grams of methane. The partial pressure of methane in the flask is ____ atm and the total pressure in the flask is _____atm.

SO2 reacts with H₂S as follows: 2H2S + SO2 -> 3S + 2H₂O When 7.50 g of H₂S reacts with 12.75 g of SO2, which statement is true? A. SO2 is the limiting reagent B. S is the limiting reagent C. H₂S is the limiting reagent D. H₂O is the limiting reagent

Sodium thiosulfate Na2S2O3, the major component in photographic fixer solution, reacts with silver bromide to dissolve it according to the following reaction AgBr(s) + 2Na2S2O3(aq) NasAg(S2O3)2(aq) + NaBr(aq) How many moles of Na2S2O3 would be required to react completely with 0.610 g of AgBr? How many ml of 0 017 M Na2S₂O3 contain this number of moles?

A sample of chlorine gas has a density of ____ g/L at a pressure of 0.793 atm and a temperature of 54 °C.

SO2 reacts with H₂S as follows: 2H2S+SO2 --> 3S + 2H₂O When 7.50 g of H₂S reacts with 12.75 g of SO2, which statement is true? A. 3.4 grams of H₂S remains when reaction is complete B. 0.36 grams of SO2 remains when reaction is complete OC. 0.98 grams of H₂S remains when reaction is complete D.5.3 grams of SO2 remains when reaction is complete

0.967 mol sample of hydrogen gas at a temperature of 13.0 °C is found to occupy a volume of 25.3 liters. The pressure of this gas sample

Calculate the lattice energy of ionic solid MX, given the following thermodynamic data: M(s) + 1/2 X2(g) → MX(s) ΔHran-695. kJ ΔHran= 91. kJ M(s) → M(g) Bond energy of X2 = 178. kJ/mol lonization energy for M(s) = 426. kJ/mol Electron affinity of X = -279. kJ/mol

Aluminum has a specific heat capacity of 0.90 J/gK and iron has a specific heat capacity of 0.45 J/gK. If you had equal mass samples of the two metals at the same temperature and they both absorbed the same amount of heat, which one would be at the higher temperature? Iron Aluminum

A 13.37 g sample of an unknown hydrocarbon undergoes combustion in a bomb calorimeter with a calorimeter constant of 18.5 kJ/C. If the calorimeter increases in temperature from 17.89 to 29.49 °C, what is the value of q (in kJ) for the combustion reaction. Include the correct sign with your value.

A system undergoes a process consisting of the following two steps: Step 1. The system absorbs 57 J of heat while 94 J of work is done on it Step 2. The system releases 57 J of heat while performing 59 J of work. Calculate ΔE for the overall process

In the laboratory you dissolve 20.0 g of ammonium fluoride in a volumetric flask and add water to a total volume of 250 mL. What is the molarity of the solution? What is the concentration of the ammonium cation? What is the concentration of the fluoride anion?

A student synthesized a new molecule of MX4 with either point group Td, C2v, or C4v each of the following point group's character tables are reflected above. A. None of these point groups result in the rule of mutual exclusion B. List the possible Raman active modes for each point group Td C2v CAV C. List the possible IR active modes for each point group Td C2v C4V D. MX4 molecules will have ____ total vibrational modes

Suppose that an alloy were made from gold and carbon. Identify the type of alloy that would be made and predict how the alloy's malleability would change relative to the original gold metal, and justify your prediction using your understanding of metallic solid structure.

Using complete subshell notation, match the each the predicted electron configuration of following atoms. Si Tb Te Fe N a. 1s²2s²2p63s²3p64s²3d¹04p65s²4d105p66s²4f⁹ b. 1s²2s²2p63s²3p² c. 1s²2s²2p³ d. 1s²2s²2p63s²3p64s²3d¹04p65s²4d105p4 e. 1s²2s²2p63s²3p63d6

A solution is made by dissolving 2.15 g glucose (C6H12O6) in enough water to make 102.1 mL of solution. Calculate the molarity of this solution. HOW DO WE GET THERE? What are the moles of C6H12O6 present?

Consider the reaction: 2 NaBH4(aq) + H₂SO4(aq) → 2 H₂(g) + Na2SO4(aq) + B₂H6(g) What volume, in mL, of a 0.535 M solution of NaBH4 is required to produce 0.514 g of B₂H6? H₂SO4 is present in excess.

The useful metal manganese can be extracted from the mineral rhodochrosite by a two-step process. In the first step, manganese(II) carbonate and oxygen react to form manganese(IV) oxide and carbon dioxide: 2MnCO3(s) + O₂(g). -> 2 MnO₂ (s) + 2 CO₂ (g) In the second step, manganese(IV) oxide and aluminum react to form manganese and aluminum oxidide: 3 MnO₂ (s) + 4Al(s) 3 Mn(s) + 2 Al₂O3(s) Suppose the yield of the first step is 90.% and the yield of the second step is 69.%. Calculate the mass of manganese(II) carbonate required to make 10.0 kg of manganese.

Calculate the mass of solid KCl that must be added to 1.62 L of a 0.229 M Pb(NO3)2 solution to precipitate all the Pb2+ ions in the form of PbCl2. What mass of KCl is required?

A chemist must dilute 73.1 mL of 2.66 M aqueous Iron(III) bromide (FeBr;) solution until the concentration falls to 2.00 M. She'll do this by adding distilled water to the solution until it reaches a certain final volume.

A chemist adds 475.0 mL of a 0.969M sodium chloride (NaCl) solution to a reaction flask. Calculate the millimoles of sodium chloride the chemist has added to the flask.

In which of the following are both members of the pair polysaccharides containing a-1,4 glycosidic bonds and a-1,6 glycosidic bonds to branches? Glycogen and amylopectin Cellulose and amylopectin Amylose and cellulose Glycogen and amylose I DON'T KNOW YET

97.000 mL of 0.200 M Cu(NO3)2(aq) is mixed with 156.00 mL of 0.400 M NaOH(aq). Assuming 100% yield, what mass (in g) of precipitate will form?

A student adds 6.50 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the balloon at STP after all the dry ice sublimes (converts to gaseous CO₂)?

Which of the following correctly lists the types of radiation in the order of increasing energy? a. X rays, microwaves, visible light, infrared b. infrared, radio waves, gamma rays, visible light c. microwaves, ultraviolet, X rays, gamma rays d. infrared, ultraviolet, visible light, gamma rays

A sample of oxygen gas is collected over water at 25°C and a total pressure of 652 torr. The volume of the gas collected is 500.0 mL. What mass of oxygen is collected? The vapor pressure of water at 25°C is 23.8 torr.

A 3.94 gram sample of an unknown gas is found to occupy a volume of 2.48 L at a pressure of 610 mm Hg and a temperature of 56 °C. The molar mass of the unknown gas is __ g/mol.

A sample of neon gas at a pressure of 920 mm Hg and a temperature of 55 °C, occupies a volume of 8.27 liters. If the gas is cooled at constant pressure to a temperature of 11 °C, the volume of the gas sample will be __ L.

What is the concentration of chloride ions in a solution obtained by mixing 210. mL of 0.500 M potassium chloride (aq) with 260. mL of 0.440 M barium chloride(aq).

What is the net ionic equation for the reaction between aqueous solutions of Cr(NO3)3 and Na3PO4? Na+ (aq) + NO3(aq) → NaNO3(s) Cr³+ (aq) + PO4³(aq) → CrPO4(s) Cr³+ (aq) + PO4³(aq) → CrPO4(aq) Cr(NO3)3(aq) + Na3PO4(aq) → CrPO4(s) + 3 NaNO3(aq) Na (aq) + NO3(aq) → NaNO3(aq)

A sample of krypton gas at a pressure of 0.868 atm and a temperature of 27.0 °C, occupies a volume of 786 mL. If the gas is compressed at constant temperature until its pressure is 1.33 atm, the volume of the gas sample will be ___ mL.

What volume is occupied by a 1.66 mol sample of krypton gas at a temperature of 0 °C and a pressure of 1 atm?

A sample of neon gas at a pressure of 0.875 atm and a temperature of 23.3 °C, occupies a volume of 15.0 liters. If the gas is allowed to expand at constant temperature to a volume of 19.2 liters, the pressure of the gas sample will be ___ atm.

A sample of krypton gas collected at a pressure of 456 mm Hg and a temperature of 298 K has a mass of 114 grams. The volume of the sample is____L.

The average lung capacity of a human is 6.0 L. How many moles of air are in your lungs when you are in the following situations? Assume air behaves ideally and has an average molar mass of 29.0 g/mol. a. At sea level (T = 298 K, P = 1.00 atm). b. 10 m below water (T = 298 K, P = 1.98 atm). c. At the top of Mount Everest (T= 203 K, P = 0.297 atm).

A 3.11 gram sample of neon gas has a volume of 900 milliliters at a pressure of 3.07 atm. The temperature of the Ne gas sample is ___ °C.