According to MO theory, which of the following has the highest bond order?

According to MO theory, which of the following has the highest bond order? A)C2 B)C2+ C)C2- Highest Bond Energy? A)C2 B)C2+ C)C2- Shortest bond length? A)C2 B)C2+ C)C2- 3 Answers 1st question, answer A. C2 has a bond order of... Read more

How much heat is released for every 1.00 g sucrose oxidized?

Sucrose (C12H22O11, table sugar) is oxidized in the body by O2 via a complex set of reactions that ultimately produces CO2(g) and H2O(g) and releases 5.64 x103 kJ/mol sucrose. (a) Complete and balance the thermochemical equation for this reaction. (b)... Read more

Which of these molecules is most polar?

Which of these molecules is most polar? H3C-CH3 H3C-CH2-I H3C-CH2-Br H3C-CH2-Cl H3C-CH2-F 3 Answers Ethyl-fluoride would be the most polar since there is the highest difference in electronegativities between the adjacent functional groups (ethyl and fluorine). answer: H3C-CH2-F Here is... Read more

What is the rate of reaction when [A] 0.20 M?

A reaction in which A —–> products was monitored as a function of time and the results are shown below. Time (s) —- [A] (M) 0 —- 1.000 25 —- 0.914 50 —– 0.829 75 —- 0.744 100 —– 0.659... Read more

if the pressure of water vapor is increased at a constant

a ) if the pressure of water vapor is increased at a constant temperature of 100 degrees celsius it will ____ b) if the pressure of water vapor is increased at a constant temperature of -50 degrees celsius it will... Read more

The density of krypton gas at 1.21 atm and 50.0 degrees Celsius is _______g/L?

The density of krypton gas at 1.21 atm and 50.0 degrees Celsius is ___g/L? 2 Answers One mole of Kr has a mass of 83.8 grams. At STP it would occupy 22.414 liters. At 1.21 atm and 50 C it... Read more

To what family of the periodic table does this new element probably belong?

A space probe identifies a new element in a sample collected from an asteroid. Successive ionization energies (in attojoules per atom) for the new element are shown below. i1 0.507 i2 1.017 i3 4.108 i4 5.074 i5 6.147 i6 7.903... Read more

Which of these ions have six d electrons in the outermost d subshell?

Which of these ions have six d electrons in the outermost d subshell? Os^2+ Zn^2+ Ru^2+ Tc^2+ Mn2+ Fe2+ Y^2+ Which of these ions have ten d electrons in the outmost d subshell? Zn^2+ Tc^2+ Fe2+ Y^2+ Cd^2+ Lr^2+ Sc^2+... Read more

Predict the products of each of these reactions and write

Predict the products of each of these reactions and write balanced complete ionic and net ionic equations for each. If no reaction occurs, write NOREACTION . NaI(aq)+Hg2(NO3)2(aq)→ 2.HClO4(aq)+Ba(OH)2(aq)→ 3.Li2CO3(aq)+NaCl(aq)→ 4.HCl(aq)+Li2CO3(aq)→ 2 Answers 1. 2 NaI(aq) + Hg2(NO3)2(aq) → 2 HgI(s)... Read more

What is the [H+] of a solution with a pH of 5.6?

13. What is the [H+] of a solution with a pH of 5.6? Use a scientific calculator. (Points: 3) 5.0 × 105 8.3 × 106 2.5 × 106 7.7 × 105 Which of the following [H+] values describes the most... Read more

Calculate the equilibrium constants at 25°C for each of

Could someone work these out so I understand them. calculate the equilibrium constants at 25°C for each of the following reactions. 1) 2 NO2 (g) <——–> N2O4 (g) 2) 3/2 H2 (g) + 1/4 P4 (g) <———> PH3 (g) 1... Read more

Find the change in S° for the formation of one mole PCl5(g)

Find the change in S° for the formation of one mole PCl5(g) from its elements. (Use white phosphorus as the reactant.) (answer is in units of J/K) *change in S° of PCl5(g) = 353 change in S° of P4 (s)... Read more

What minimum frequency of light is required to ionize boron?

The energy required to ionize boron is 801 kJ/mol. What minimum frequency of light is required to ionize boron? Please explain how to do this, I ended up getting 1.208*10^36 and it ended up being wrong. I can’t seem to... Read more

Use the equilibrium-constant expression to calculate the value of

Use the equilibrium-constant expression to calculate the value of the equilibrium constant for each of the following reactions at 298 K, using data from Appendix C in the textbook. NaHCO3(s)⇌NaOH(s)+CO2(g) Values from textbook: NaHCO3(s)- Delta H) -947.7 Delta G)-851.8 S)102.1... Read more

Write an equation for the reaction in which H2C6H7O5−(aq)

Write an equation for the reaction in which H2C6H7O5−(aq) acts as a base in H2O(l). Write an equation for the reaction in which H2C6H7O5−(aq) acts as an acid in H2O(l). (Will award best answer obviously) 2 Answers acts as base... Read more

MgCl2(s)+H2O(l)—>MgO(s)+2HCl(g)

Calculate the standard enthalpy change for the following reaction at 25 °C. MgCl2(s)+H2O(l)—>MgO(s)+2HCl(g) 1 Answer Ignoring the fact that this reaction doesn’t happen as written: MgCl2(s) + H2O(l) → MgO(s) + 2 HCl(g) Using the standard enthalpies of formation given... Read more

What is the formula of a compound formed between iodine (I) and calcium (Ca)?

1.What is the resulting formula unit when aluminum (Al) and phosphorus (P) bond? 2.What is the formula of a compound formed between iodine (I) and calcium (Ca)? 4 Answers aluminium phosphide AlP calcium iodide CaI2 1. Al has a 3+... Read more

Calculate the total mass of the neutrons in 19 9 F.

Part A Calculate the total mass of the neutrons in 19 9 F. Use 1.008665 amu as the mass of 10n (mass of a neutron). Express your answer in atomic mass units to 7 significant figures. Part B Calculate the... Read more

Consider the decomposition of a metal oxide to its elements

Consider the decomposition of a metal oxide to its elements, where M represents generic metal. M2O (s) <-> 2M (s) + 1/2 O2 (g) Substance Delta G M2O———— -6.30 M—————– 0 O2 —————– 0 1) What is the standard change... Read more

Which of the following tends to form anions when bonding with other elements?

1. Which of the following tends to form anions when bonding with other elements? sodium argon calcium oxygen Which of the following is a brittle solid? chlorine bromine iodine sulfur Which of the following elements belong to the d-block of... Read more

Which element can form a chloride with a general formula of MCl2 or MCl3?

1. Which element can form a chloride with a general formula of MCl2 or MCl3? Fe Al Mg Zn Which equation is correctly balanced? H2 + O2 H2O Ca + Cl2 CaCl 2H2 + O2 2H2O Ca + Cl2 Ca2Cl... Read more

Write the complete balanced equation for the following reaction:

How many atoms of carbon are represented in 3CH3CH2O? 2 4 6 8 Question 2 (Multiple Choice Worth 3 points) When the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of... Read more

What will oxygen likely do to complete its outermost shell

Please help me What will oxygen likely do to complete its outermost shell, based on the Lewis dot diagram shown? accept electrons accept some electrons and give up other electrons move electrons from the inner shell to the outer shell… Read more

The oxidation numbers of P, S and Cl in H2PO2-, H2S and KClO4 are, respectively:

The oxidation numbers of P, S and Cl in H2PO2-, H2S and KClO4 are, respectively: A. -1, -2, +7 B. -1, -1, +3 C. +1, -2, +7 D. -1, -2, +3 E. +1, +2, +7 thanks 1 Answer 1. H2PO2-... Read more

Consider the balanced equation.

Consider the balanced equation. CuSO4 + Zn Right arrow. ZnSO4 + Cu If 200.0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper? 1.253 g 50.72 g 79.63 g 194.3 g Read more