Which of the following gases has the lowest average speed at 25?

NH2NH2

C2H4

He

N2

When 4.00 moles of PCl5 (g) is put in a 1.00 L vessel the equilibrium: PCl3 (g) + Cl2 (g) <--> PCl5 (g) is established. At equilibrium [Cl2]e = 5.20 x 10^-3 M. What is Kc for this equilibrium as written?

a.) 9.61 x 10^2

b.) 6.77 x 10^-6

c.) 1.48 x 10^5

d.) 9.0 x 10^-6

e.) impossible to determine

What is the maximum number of electrons in an atom that can have the following quantum numbers?

A.) n=2; m_s= -1/2

B.) n=5: l=3

C.) n=4; l=3; m_l= -3

D.) n=4; l=1; m_l=1

Completely confused! Please explain your answer. Thanks...

Based on your research, respond to the following: What are the differences between alkenes and alkynes? What are the differences between cis- and trans-isomers? How are cistrans isomers used for night vision?

For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Trial [A] (M) [B] (M) [C] (M) Initial rate (M/s) 1 0.20 0.20 0.20 6.0×10−5 2 0.20 0.20 0.60 1.8×10−4 3 0.40 0.20 0.20 2.4×10−4 4 0.40 0.40 0.20 2.4×10−4 Rate law equation The rate of a chemical reaction depends on the concentrations of the reactants. For the general reaction between Aand B, aA+bB⇌cC+dD The dependence of the reaction rate on the concentration of each reactant is given by the equation called the rate law: rate=k[A]m[B]n where k is a proportionality constant called the rate constant. The exponent m determines the reaction order with respect to A, and n determines the reaction order with respect to B. The overall reaction order equals the sum of the exponents (m+n). Part A What is the reaction order with respect to A? Express your answer as an integer. SubmitHintsMy AnswersGive UpReview Part Part B What is the reaction order with respect to B? Express your answer as an integer. SubmitHintsMy AnswersGive UpReview Part Part C What is the reaction order with respect to C? Express your answer as an integer.

When CS₂(g) (6.828 mol) and 27.31 mol of H₂(g) in a 360.0 L reaction vessel at 382.0 °C are allowed to come to equilibrium the mixture contains 52.58 grams of CH₄(g). What concentration (mol/L) of H₂(g) reacted?

  CS₂(g)+4H₂(g) = CH₄(g)+2H₂S(g)

When SbCl₃(g) (4.334 mol) and 307.3 grams of Cl₂(g) in a 420.0 L reaction vessel at 716.0 °C are allowed to come to equilibrium the mixture contains 0.007729 mol/L of SbCl₅(g). What is the equilibrium concentration (mol/L) of SbCl₃(g)?

SbCl₃(g)+Cl₂(g) = SbCl₅(g)

When H₂(g) (17.50 grams) and 0.02800 mol/L of D₂(g) in a 310.0 L reaction vessel at 757.0 K are allowed to come to equilibrium the mixture contains 6.402 mol of HD(g). What is the equilibrium concentration (mol/L) of H₂(g)?

  H₂(g)+D₂(g) = 2HD(g)

When a sample of (CH₃CO₂H)₂(g) (493.2 grams) is placed in 390.0 L reaction vessel at 560.0 °C and allowed to come to equilibrium the mixture contains 0.01560 mol/L of CH₃CO₂H(g). What concentration (mol/L) of (CH₃CO₂H)₂(g) reacted?

(CH₃CO₂H)₂(g) = 2CH₃CO₂H(g)

When a sample of NO₂(g) (1.005 mol) is placed in 490.0 L reaction vessel at 716.0 °C and allowed to come to equilibrium the mixture contains 26.17 grams of N₂O₄(g). What is the equilibrium concentration (mol/L) of NO₂(g)?

2NO₂(g) = N₂O₄(g)

For the titration of 20.00 mL of 0.150 M HF with0.250 M NaOH, calculate:

a) the initial pH;Ka= 6.6 x 10^-4

b) the pH when the neutralization is 25% complete

c) the pH when the neutralization is 50% complete

d) the pH when the neutralization is 100% complete

This is a very simpllistic approach to protein folding, which ignores solvent and volume effects, but it allows us to practice what we have learned about thermodynamics and kinetics. Enzymes are long chains of amino acids that have to fold in the proper way so as to exhibit enzyme activity. They can catalyze certain reactions. Let us pick a reaction in the human body at 37 C, we will call it enzyme X.

Let's say that enzyme X is the catalyst responsible for breaking starch down to individual glucose molecules. What of the following things can happen to the starch and enzyme system if you rainse the temperature?

a-the rate of the reaction of starch going to glucose will increase

b-nothing should happen since a catalyst does not affect the equilibrium

c-the enzyme could stop working effectively becauset the folded form would stop being made and would start to unravel if the process is reversible

d-the equilibrium constant will get bigger to favor the glucose side more

A quantity of 2.30 × 102 mL of 0.900 M HNO3 is mixed with 2.30 × 102 mL of 0.450 M Ba(OH)2 in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of both solutions is the same at 18.46°C. The heat of neutralization when 1.00 mol of HNO3 reacts with 0.500 mol Ba(OH)2 is −56.2 kJ/mol. Assume that the densities and specific heats of the solution are the same as for water (1.00 g/mL and 4.184 J/g · °C, respectively). What is the final temperature of the solution? (in C)

please answer all or explain.

11. Circle the statement that is not true for hemoglobin.

A.The R-state has a high affinity for diatomic oxygen.

B. 2,3-bisphosphoglycerate stabilizes the T-state.

C. Carbon monoxide stabilizes the R-state.

D. H⁺ ions stabilize the R-state.

12. Circle the statement that is not true for CO₂.

A. It is a non-polar molecule that can diffuse across cell membranes.

B. It can combine with terminal amines on proteins to form carbamates.

C. It is primarily transported in the blood as HCO₃.

D. It inhibits the release of O₂ from hemoglobin.

13. What environmental pressure is considered responsible for keeping the sickle cell gene in the human gene pool?

14. Circle the statement that is not true for an enzyme.

A. It reduces ΔG for a reaction.

B. It stabilizes the transition state in a reaction.

C. It increases the reaction rate in both the forward and reverse directions.

D. It has a catalytic site that is a crevice or cleft in the molecule.

15. What are the two types of cofactors that interact with enzyme? (8 points)

Enough of a monoprotic acid is dissolved in water to produce a 0.0129 M solution. The pH of the resulting solution is 2.69. Calculate the Ka for the acid.

how much 5.60 M NaOH must be added to a 420.0 ml of a buffer that is 0.0205 M acetic acid and 0.0245 M sodium acetate to raise the pH to 5.75?

Please explain in detail the mechanisims by which these biologicals work on a patient with NSCLC?

A) Gefitinib aka Iressa

B) Erlotinib aka Tarceva

C) Afatinib aka Giotrif