Chemistry concepts and calculations

1. Explain why there are two different concentrations of iron(III) nitrate. 2. W

1. Explain why there are two different concentrations of iron(III) nitrate. 2. Why is it necessary to record the temperature even though you will not need it in your calculations?…

1. Explain why you would not observe a precipitate when you mixed equal volumes

1. Explain why you would not observe a precipitate when you mixed equal volumes of 0.01 BaCl2 is mixed with 0.1 Pb(NO3)2. The Ksp for PbCl2 is 2.4 x 10-4 2. Barbituric acid, HC4H3…

1. Explaing the following terms for a reader who is not familiar with Excel: Wor

1. Explaing the following terms for a reader who is not familiar with Excel: Worksheet,Workbook, Cell, Row, Column, Spreadsheet. 2. How do you quickly navigate to the last row in …

1. F or compounds having similar Rf values, what could be altered to improve the

1. F or compounds having similar Rf values, what could be altered to improve the the spots? 2. Why are small concentrated spots of sample applied to the plate? 3. Calculate the Rf…

1. F or compounds having similar Rf values, what could be altered to improve the

1. F or compounds having similar Rf values, what could be altered to improve the the spots? 2. Why are small concentrated spots of sample applied to the plate? 3. Calculate the Rf…

1. Fats have ( Higher/lower) melting points than oils so they tend to be (liqud/

1. Fats have ( Higher/lower) melting points than oils so they tend to be (liqud/soild) at room temperature. This is because they have (more/less) efficient packing than oils do, a…

1. Fe3+ reacts with SCN- to form FeSCN2+. If 2.0 mL of a 2.3 M solution of Fe3+

1. Fe3+ reacts with SCN- to form FeSCN2+. If 2.0 mL of a 2.3 M solution of Fe3+ is mixed with 2.0 mL of a 0.161 M solution of SCN- and 6.0 mL of water, calculate the concentration…

1. Fe3+ reacts with SCN- to form FeSCN2+. If 2.0 mL of a 2.3 M solution of Fe3+

1. Fe3+ reacts with SCN- to form FeSCN2+. If 2.0 mL of a 2.3 M solution of Fe3+ is mixed with 2.0 mL of a 0.161 M solution of SCN- and 6.0 mL of water, calculate the concentration…

1. Figure 11.1: Graphical data for the ionization energies of the elements show

1. Figure 11.1: Graphical data for the ionization energies of the elements show sawtooth trends across the periods of the elements. a. Locate the noble gas group of elements, What…

1. Figure 11.1: Graphical data for the ionization energies of the elements show

1. Figure 11.1: Graphical data for the ionization energies of the elements show sawtooth trends across the periods of the elements. a. Locate the noble gas group of elements. What…

1. Figure 11.1: Graphical data for the ionization energies of the elements show

1. Figure 11.1: Graphical data for the ionization energies of the elements show sawtooth trends across the periods of the elements. a. Locate the noble gas group of elements. What…

1. File Account.java contains a partial definition for a class representing a ba

1.   File Account.java contains a partial definition for a class representing a bank account. Save it to your directory and study it to see what methods it contains. Then complete…

1. Fill a small glass with ice fresh from the freezer and immediately pour some

1. Fill a small glass with ice fresh from the freezer and immediately pour some soda into the glass. Is it a physical or chemical change? Explain why. 2. Now fill a second glass w…

1. Fill in the blanks Chemical reactions either release energy or absorb e react

1. Fill in the blanks Chemical reactions either release energy or absorb e reaction that releases energy is called an reaction that absorbs energy is called an a) nergy as they pr…

1. Fill in the bubble for letter \"A\" for Question 1 on your Scantron sheet. Ch

1. Fill in the bubble for letter "A" for Question 1 on your Scantron sheet. Ch6 41. How much heat in joules will it take to raise the temperature of a 100.0 g piece of copper from…

1. Fill in the following as to molecular or ionic compounds. Compound is a metal

1. Fill in the following as to molecular or ionic compounds. Compound is a metal and a nonmetal: Compound is composed of ions: Compound is composed of nonmetals: Bonding is a tran…

1. Find H ° for the reaction C3H8( g ) + 5 O2( g ) 3 CO2( g ) + 4 H2O( l ). H °

1. Find H° for the reaction C3H8(g) + 5 O2(g) 3 CO2(g) + 4 H2O(l). H° = -2046 kJ for the reaction: C3H8(g) + 5 O2(g) 3 CO2(g) + 4 H2O(g), and the heat of vaporization of water is …

1. Find as many errors in the C program: Put the errors in a list. Please help B

1. Find as many errors in the C program: Put the errors in a list. Please help Below is a short C program, dice.c that simulates rolling two dice 10000 times and keeps track of ho…

1. Find the MSDS for potassium chlorate. a) Are there any health hazards associa

1. Find the MSDS for potassium chlorate. a) Are there any health hazards associated with this material, and what conditions produce these hazards? b) Under what conditions does it…

1. Find the MSDS for potassium chlorate. a) Are there any health hazards associa

1. Find the MSDS for potassium chlorate. a) Are there any health hazards associated with this material, and what conditions produce these hazards? b) Under what conditions does it…

1. Find the MSDS for potassium chlorate. a) Are there any health hazards associa

1. Find the MSDS for potassium chlorate. a) Are there any health hazards associated with this material, and what conditions produce these hazards? b) Under what conditions does it…

1. Find the electronegativity difference between Al and F . question ask is to E

1. Find the electronegativity difference between Al and F. question ask is to Express your answer using two significant figures. 2. Find the electronegativity difference between M…

1. Find the equilibrium constant for the reaction of BICINE (use the p K a value

1. Find the equilibrium constant for the reaction of BICINE (use the pKa values for common buffers table) with just one equivalent of NaOH. 2. What is the equilibrium constant for…

1. Find the values for enthalpy changes of formation of NaOH(aq), HCL(aq), KOH(a

1. Find the values for enthalpy changes of formation of NaOH(aq), HCL(aq), KOH(aq), and KOH(aq) in an appropriate reference work. 2.Write the balanced chemical equations correspon…

1. Find the values for the enthalpy changes of formation of NaOH(aq), HCl(aq), K

1. Find the values for the enthalpy changes of formation of NaOH(aq), HCl(aq), KOH(s), and KOH(aq) in an appropriate reference work 2. Write balanced chemical equations correspond…

1. Five grams of the crystalline compound “A” dissolve in 100 mL of acetone at r

1. Five grams of the crystalline compound “A” dissolve in 100 mL of acetone at room temperature. At the boiling point temperature of acetone, 50 grams of the same compound dissolv…

1. Five students determined the solubility of KNO,in water at 30°C g KNOs/ 100 g

1. Five students determined the solubility of KNO,in water at 30°C g KNOs/ 100 g HO 44.9 45.7 46.1 45.8 46.0 a. Determine the mean (average) of the data set. b. In preparation for…

1. Fluorine gas reacts violently with water to produce hydrogen fluoride and ozo

1. Fluorine gas reacts violently with water to produce hydrogen fluoride and ozone according to the following equation. 3F2(g) + 3H2O() + 6HF(g) + O(g) divide en die standard What…

1. Fluorine gas reacts violently with water to produce hydrogen fluoride and ozo

1. Fluorine gas reacts violently with water to produce hydrogen fluoride and ozone according to the following equation. 3F2(g) + 3H2O() + 6HF(g) + O(g) divide en die standard What…

1. Follow the electron configuration order chart to answer this question. a) H :

1. Follow the electron configuration order chart to answer this question. a) H : level: 1, sublevel: s , 1s1 b) Zn: level: 3, sublevel: d , 1s22s22p63s23p63d104s2 c) S: level: 3, …

1. For a .10 M solution of each of the following substances determine (I) whethe

1. For a .10 M solution of each of the following substances determine (I) whether the solution will be acidic or basic (ii) estimate the pH (iii) write the hydrolysis or dissociat…

1. For a certain reaction, K c = 4.47×10 7 and k f= 2.75×10 5 M 2s1 . Calculate

1. For a certain reaction, Kc = 4.47×107 and kf= 2.75×105M2s1 . Calculate the value of the reverse rate constant, kr, given that the reverse reaction is of the same molecularity a…

1. For a class with several stl::string data members (like Card in the project),

1. For a class with several stl::string data members (like Card in the project), why can C++ copy objects of the class without an explicitly written copy constructor in the class?…

1. For a given reaction the equilibrium constant K c = 129 at -10.5 o C then: Se

1. For a given reaction the equilibrium constant Kc = 129 at -10.5 oC then: Select one: a. Reactants are always favored b. Products are always favored c. The system always shifts …

1. For biological and medical applications we often need to consider proton tran

1. For biological and medical applications we often need to consider proton transfer equilibria at body temperature (37° C). The value of Kw for water at body temperature is 2.5 ×…

1. For both of the following experimental procedures, determine the absolute unc

1. For both of the following experimental procedures, determine the absolute uncertainty, relative uncertainty and % relative uncertainty associated with the final answer.        …

1. For each application below, determine if the particular choice of metal is ap

1. For each application below, determine if the particular choice of metal is appropriate or inappropriate, and explain your answer. If the metal is not suitable for the applicati…

1. For each case of stoichiometric, 25% excess air, and 150% theoretical air wit

1. For each case of stoichiometric, 25% excess air, and 150% theoretical air with ethyl alcohol gas (C2H5OH), determine (a) the air-fuel ratio and (b) equivalence ratio of the exh…

1. For each mask length: 30, 29, 28, 27, 26, 25, answer the following items a. N

1.     For each mask length: 30, 29, 28, 27, 26, 25, answer the following items a.   Number of usable IPs b.   Mask number 2.     Given a class C network, when we need to arrange …

1. For each of the compounds shown below, how many peaks do you expect in the c

1. For each of the compounds shown below, how many peaks do you expect in the c NMHR spectrum? How many peaks do you expect in the H NMR spectrum? What will the relative Br Br Br …

1. For each of the descriptions of different solutions, what inferences can be m

1. For each of the descriptions of different solutions, what inferences can be made? (Which ion(s) are identified as possibly present, confirmed present, absent, or no conclusion?…

1. For each of the following circumstances, indicate wheter the calculated molar

1. For each of the following circumstances, indicate wheter the calculated molarity of NaoH would be lower, higher, or unaffected. Explain your answer in each case. a. The inside …

1. For each of the following compounds, determine the formal oxidation state of

1. For each of the following compounds, determine the formal oxidation state of the transition metal. 2 Chromium forms two common anionic carbonyls, Cr(CO)5^s- and Cr(C0)4^-. Dedu…

1. For each of the following expressions, assume that a, b, and c are int variab

1.      For each of the following expressions, assume that a, b, and c are int variables and their values are as follows: a = 1, b = 2, c = 3. Each expression is to be treated ind…

1. For each of the following functions, find a function g(n) such that f(n) (g(n

1. For each of the following functions, find a function g(n) such that f(n) (g(n)). You must use the simplest g(n) possible in your answers such as n, log(n), nlog(n), n^2, n^3, a…

1. For each of the following processes, deduce whether the quantities q, w, AU,

1. For each of the following processes, deduce whether the quantities q, w, AU, AH, AS, and AS(total) are positive, zero, or negative. MAKE A TABLE: you can label the processes in…

1. For each of the following processes, deduce whether the quantities q, w, AU,

1. For each of the following processes, deduce whether the quantities q, w, AU, AH, AS, and AS(total) are positive, zero, or negative. MAKE A TABLE: you can label the processes in…

1. For each of the following rate equations, describe what would happen to the r

1. For each of the following rate equations, describe what would happen to the rate if the concentration of reactant A was tripled and the concentration of reactant B is halved. a…

1. For each of the following reactions, calculate G rxn, H rxn,and S rxn. Rxn 1:

1. For each of the following reactions, calculate G rxn, H rxn,and S rxn. Rxn 1: H2(g) + O2(g) = 2NO(g) Rxn 2: 2NO(g) + O2(g) = 2NO2(g) Rsn 3: 2O3(g) = 3O2(g) Rxn 4: Na(s) =Na(g) …

1. For each of the following reactions, identify which of the reactants is the a

1. For each of the following reactions, identify which of the reactants is the acid, and which is the base, and explain which acid-base definition would be most suitable for the r…