Inorganic Chemistry Questions

Which of the following enables manufacturers to provide products made in less time and with less money. less pollution, less energy, and less use of natural resources? innovative designs and processes reverse engineering eco-friendly devices and processes life cycle assessments

Chlorine exists as two naturally occurring isotopes. Cl-35 occurs 75% of the time and Cl-37 occurs 25% of the time. Which of the following calculations is used to correctly calculate the average atomic mass of chlorine? (35 amu x 0.75) + (37 amu x 0.25) (35 amu/2) x (37 amu / 2) (35 amu +37 amu)/2 (35 amu+75) x (37 amu +25)

What is the last step in the formation of a solution with an ionic compound as a solute? Breaking of ionic bonds. Weakening of the IMF among solvent particles. Dissociation of ions. The ions are surrounded by water molecules.

Look at the equation below: 2 Al + 3 CuSO4 - 3 Cu + 1 Al2(SO4)3 During an experiment, 0.35-g of copper (II) sulfate, CuSO4, decomposes according to the reaction above. How many moles of copper would be expected to form? Hint You'll need the molar mass of CuSO4 0.0032 males of Cu 0.0022 moles of Cu 0.0016 moles of Cu 0.0029 moles of Cu

A chemistry student decides to develop a new experiment with CO₂ (g) under the following conditions: A new sample of CO₂ (g) initially has a pressure of 875 mmHg, a volume of 1540 mL, and at a temperature of 28.0°C. The student then transfers the CO₂ (g) into a new container in which the gas is now at standard temperature and pressure (STP). What is the volume of the new container?

An aluminum soda can is filled with 10mL of water and heated on a hot plate. When the water is boiling, the can is quickly inverted into a basin of cold water. The can implodes. Explain, in terms of air pressure, why the can imploded. Is this an example of Boyles Law or Charles law?

A chemical compound of unknown composition was carefully analyzed and found to consist of 36.4% carbon, 6.1% hydrogen, and 57.4% fluorine. The molecular molar mass of the compound is known to be 66.1 g/mol. a. Determine the empirical formula of the compound. b. Determine the molecular formula of the compound.

Space Cadet Katrina wants to keep some leaking poison gases from escaping from the science lab on her space station. She knows that if she can reduce the pressure of the air in the lab, it will help keep bad air from flowing out into the rest of the station. She cannot manipulate the pressure directly, but she can control the air conditioning remotely. The pressure in the lab is currently 20 lbs/in² and the temperature is 27°C. She won't feel safe until she reduces the pressure to 8 lbs/in². To what temperature must she cool the lab? Assume constant volume. ANS: (t1 = 300 K = 27°C) (12= 120 K = -153°C)

Given 225 grams of iron (II) nitrate and 178 grams of sodium phosphate: a. Calculate the mass of the precipitate that can form during the reaction. b. Which reactant is the limiting reactant? c. Which reactant is the excess reactant? d. If the percent yield of the experiment was 67.2%, what is the actual yield of the experiment?

Propane, C₂H, is the fuel used with barbeque grills. When propane reacts with oxygen gas, the following is the unbalanced chemical equation: _C₂H₂(g) +O₂ (g)_CO₂ (g) +H₂O (g) If properly balanced, which of the following word equations correctly describes this chemical reaction? A One molecule of propane gas and five molecules of molecular oxygen undergo a combustion reaction forming three molecules of carbon dioxide and four molecules of water. B One molecule of propane and four molecules of molecular oxygen combust, forming one molecule of carbon dioxide and four molecules of water. C One molecule of propane gas reacts with two molecules of oxygen gas in a double replacement reaction to form one molecule of carbon monoxide and two molecules of water. D Two molecules of propane gas react with 3 molecules of molecular oxygen to form one molecule of carbon dioxide and four molecules of water.

Mike the maniac receives a porcelain elephant for his birthday. As he unpacks the gift, he decides to put the bubble wrap protecting the elephant in his liquid helium-cooled freezer. Before he puts the bubble wrap in the freezer, each bubble has a volume of 0.6 mL, at a temperature of 27°C. What will the volume of each bubble be if he lets the bubble wrap cool down to -223°C? Assume that pressure remains constant. ANS: (t1 = 300 K = 270C) (t2 = 50 K = -2230C) v2 = 0.1 mL

Complete the questions below based upon the following chemical reaction that has taken place during a chemistry lab. Iron (II) nitrate reacts with sodium phosphate. 1. What type of reaction was performed in the lab? What evidence would you expect to see to support your conclusion for the reaction type?

Baeyer's reagent is a violet solution used for detecting certain chemicals. To make it you dissolve 1.00 g of KMnO4 in 100.0 mL of water. What is the molarity of that solution?

Column A 1.LIBN 2.KCI 3.MnO 4.MgCl2 5.CO2 6.H2S 7.C2B2 8.CO 9.C3N4 10.KMnO4 11.H2SO4 12.KCN 13.NaCl 14.HB 15.KNO2 Column B a. Hydrogen Sulfate (Sulfuric Acid) Sulfato de Hydrogeno (Acido Sulfurico) b. Potassium Cynide Cianuto de Potasio c. Manganese Oxide Oxido de Manganeso d. Sodium Chloride (Salt) Clroruro de Sodio (Salt) e. Carbon Monoxide Monoxido de Carbono f. Lithium Nitride Nitruro de Litio g. Dicarbon Diboron Diboruro de Dicarbono h. DiHydrogen MonoSulfide MonoSulfuro de Dihidrogeno i. Magnesium Chloride Cloruro de Magnesio j.Potassium Chloride Cloruro de potasio k. Potassium Permanganate Permanganato de Potasio l. Hydrogen Monoboron Monoboruro de Hidrogeno m. Potassium nitrite Nitrato de Potasio n. Carbon Dioxide Dioxido de Carbono o. Tricarbon tetranitride

A student calculates their theoretical yield of a certain chemical reaction to be 197 grams. They then perform the experiment and obtain an actual yield of 146 grams. Calculate the student's percent yield.

QUESTION: If these chemicals are mixed nothing appears to happen. Although there are several correct answers listed, you can only select one correct answer. H₂SO₂ and Na₂CO3 HCI and Na₂CO3 H₂SO4 and CaCl₂ MgSO4 and Na₂CO3 H₂SO4 and NaCl HCI and MgSO4 MgSO4 and CaCl₂

You have two tanks, one is 14L and the other is 3L. They are connected by a valve that can open or close. Initially the 12L tank is full of He gas and the 3L tank is completely empty. After opening the valve, what is the volume of the He gas?

Stoichiometry Problems/Estequiometria Problemas 1 Pb + 2 H3PO4 → 3 H2+1 Pb3(PO4) How many grams (g) of Lead (Pb) could be produced by mixing 4.1 g of Hydrogen (H2)?/ ¿Cuántos gramos (g) de plomo (Pb) se pueden producir mezclando 4.1 g de hidrógeno (H2)?

You standardize your NaOH solution by titrating 0.1174g oxalic acid (molar mass 126.07g/mol) with 34.05mL of solution. The reaction for this step is H₂C2O4 + 2NaOH- -> 2H₂O + Na₂C2O4- 10.00mL of an unknown HCI solution requires 51.78mL of the NaOH solution to reach the endpoint. What is the concentration of the unknown HCI solution?

Butane reacts with 39.7 grams of oxygen according to the reaction equation shown below. C4H10+O2-> CO₂ + H₂O Calculate the mass of water that is produced if all 39.7 grams of oxygen are consumed during the reaction.

Do this on a separate sheet of paper and upload. Please show all work. The concentration of an unknown sample of sulfuric acid was determined by the method used in this experiment. In the first titration, the sodium hydroxide was standardized by titrating 0.1852g of oxalic acid dihydrate (molar mass = 126.07g/mol) with 32.30 mL of sodium hydroxide solution. In the second titration, 10.00mL of the unknown sulfuric acid solution was titrated with 12.85mL of the sodium hydroxide solution. What was the concentration of the sulfuric acid?

Ammonia reacts with copper (II) oxide according to the reaction equation shown below. NH3 + CuO → Cu + N₂ + H₂O Calculate the number of moles of ammonia consumed during the reaction if 75.1 grams of nitrogen are produced.

Ethanol reacts with 79.5 grams of oxygen according to the reaction equation shown below. C₂H5OH + O2 → CO2 + H₂O Calculate the mass of carbon dioxide that is produced if all 79.5 grams of oxygen are consumed during the reaction.

Nickel (III) oxide decomposes forming nickel and oxygen gas. Write the reaction equation, balance, and calculate the number of moles of nickel (III) oxide consumed during the reaction if 0.947 moles of nickel are produced.

Determine the electron geometry (eg) and molecular geometry (mg) of XY4 where X is in group 4A and Y is in group 7A. A) eg - tetrahedral, mg = trigonal pyramidal B) eg-octahedral, mg - tetrahedral C) eg - trigonal bipyramidal, mg - tetrahedral D) egtetrahedral, mg - bent E) egtetrahedral, mg = tetrahedral

155 grams of solid iron (II) sulfide reacts with aqueous hydrochloric acid (HCI). Determine what products are formed, balance the chemical equation and calculate the theoretical yield, in grams, of the product containing chlorine.

47.8 grams of sucrose reacts with oxygen gas according to the reaction equation shown below. C12H22O11 + O2 → CO₂ + H₂O After a scientist performs the chemical reaction they find the actual yield of water to be 10.8 grams. Calculate the percent yield of this chemical reaction.

A scientist calculates their percent yield to be 94.3 % after performing an experiment where the actual yield was 88.9 grams. Determine the theoretical yield the scientist calculated before beginning the experiment.

Acetylene (C₂H₂) has a molar heat of combustion of -1301.1 kJ/mol. Write a balanced chemical equation for the combustion of acetylene. Then, determine the quantity of energy released in the combustion of 75 grams of acetylene.

2.89 grams of iron (II) acetate reacts with 2.53 grams of lead (II) oxalate. Predict the products, write the complete reaction equation, balance, and calculate the mass of the aqueous product.

112 grams of lithium nitrate reacts with lead (IV) sulfate according to the reaction equation shown below. Pb(SO4)2 + LINO3 → Pb(NO3)4 + Li₂SO4 Calculate the number of moles of lead (IV) nitrate produced during the reaction.

0.169 grams of iron (II) acetate reacts with 0.495 grams of lead (II) oxalate. Predict the products, write the complete reaction equation, balance, and calculate the mass of the aqueous product.

Ammonia reacts with 0.0632 moles of oxygen gas producing dinitrogen trioxide and water. Write the reaction equation, balance, and calculate the number of moles of dinitrogen trioxide produced if all 0.0632 moles of oxygen gas are consumed during the reaction.

Which of the following correctly groups the tabs which hold the command to draw a text box in a publication? Home and Insert File and Home File and Page Design Home and Page Design

74.8 grams of bismuth (III) sulfate reacts with 41.9 grams of calcium chromate. Predict the products, write the complete reaction equation, balance, and calculate the mass of the aqueous product.

Octane reacts with oxygen gas producing carbon dioxide and water. Write the reaction equation, balance, and calculate the number of moles of octane consumed during the reaction if 0.172 moles of carbon dioxide are produced.

S + O₂ -> SO₂ How many moles of oxigen are required to react completely with 7.8 g of sulphur?! ¿Cuántos moles de oxigeno se requieren para reaccionar completa g de azufre?

41 moles of antimony undergoes a synthesis reaction with chlorine gas according to the reaction equation shown below. Sb + Cl2 → SbCl3 Calculate the number of moles of antimony chloride that are produced if all 4.41 moles of antimony are consumed during the reaction.

Aluminum sulfite reacts with sodium hydroxide producing sodium sulfite and aluminum hydroxide. Write the reaction equation, balance, and calculate the number of moles of sodium hydroxide consumed during the reaction if 2.73 moles of aluminum hydroxide are produced.

89.3 grams of bismuth (III) sulfate reacts with 33.5 grams of calcium chromate. Predict the products, write the complete reaction equation, balance, and calculate the mass of the aqueous product.

Required question: to answer the question you can draw, create a text box, or both. A student mixes aqueous solutions of xium (II) phosphate and potassium iodide. A precipitate of xium (II) iodide forms. In the space below write a balanced chemical equation for the reaction. The symbol for xium is "X" (include its charge when needed.) Remember to balance the charges, balance the equation, and provide states of matter.

6.97 grams of ammonium carbonate reacts with 7.70 grams of barium arsenate. Predict the products, write the complete reaction equation, balance, and calculate the mass of the aqueous product.

166 grams of solid iron reacts with copper (II) nitrate. Determine the products, balance the chemical equation and calculate the theoretical yield of the product containing iron. Assume iron will form Fe²+ ions when it reacts.

97.3 grams of iron reacts with 126 grams of silver acetate. Determine what products are formed, balance the chemical equation, determine the limiting reactant and calculate the theoretical yield, in grams, of the product containing iron. (When iron creates a bond it will have a charge of +2)

7.80 grams of ammonium carbonate reacts with 6.63 grams of barium arsenate. Predict the products, write the complete reaction equation, balance, and calculate the mass of the aqueous product.

33.4 grams of aluminum undergoes a synthesis reaction with liquid bromine producing aluminum bromide Write the reaction equation, balance, and calculate the mass of aluminum bromide that is produced if all 33.4 grams of aluminum are consumed during the reaction. Round your answer to 3 significant figures.

All of the following are associated with the Pentagon Papers EXCEPT: 1) New York Times 2) Soviet Union 3) Secret documents 4) Daniel Ellsberg

Read the following paragraph from the article. Collier said that in the legends of the expedition, York's role has been overlooked. The bust "is really furthering that conversation here in our very, very white city." Which statement is an accurate explanation of what this paragraph means? A The York bust is bringing more attention to the role he played in the expedition. B The York bust is making people realize that York was the real leader of the expedition. C Most people in Portland are not interested in learning about York's role in the expedition. D Most people in Portland are not happy about the York bust appearing in their city.

Just like isotopes of atoms, M&Ms can vary slightly in their mass. What part of the procedure determining the average mass of an M&M could you change to increase your odds of getting a more accurate answer of total M&Ms in the cup? Explain. Hint: What would be a good sample size to use to obtain a reliable average mass?

Part A On the line, write the answer that completes each sentence. 1. The splitting of a large nucleus into smaller ones is called 2. An atom's mass defect is responsible for holding the together. 3. All transuranium elements have a(n) greater than 92. 4. After four half-lives, of an isotope will still remain. The other fraction will have decayed. 5. On the electromagnetic spectrum, rays have the highest energy.