Tuesday

February 28, 2017
Total # Posts: 37

**chem help!**

A reaction has an equilibrium constant very much less than 1. Will the reaction proceed spontaneously? A. Yes, because products are favored and deltaG° < 0. B. Yes, because reactants are favored and deltaG° > 0. C. No, because reactants are favored and deltaG°...

*September 9, 2016*

**chem help!**

If the equilibrium constant is much less than 1, how can you tell where the equilibrium lies? A. Reactants are in the numerator of the equilibrium expression, so equilibrium lies toward the reactants. B. Products are in the numerator of the equilibrium expression, so ...

*September 9, 2016*

**chem help!**

Which statement is true about a reaction at equilibrium? A. The reaction is not reversible. B. The reaction concentrations of the reactants and products are always equal. C. The reaction rates of the forward and reverse reaction are always equal. D. The change in concentration...

*September 9, 2016*

**help please?!**

so 0.046s^-1 ??

*September 9, 2016*

**help please?!**

If it takes 30 seconds for a reactant concentration to decrease from 1.0 M to 0.5 M in a first-order chemical reaction, then what is the rate constant for the reaction?

*September 9, 2016*

**chem**

What is constant about the equilibrium constant? A. The reversibility of the reaction at equilibrium is constant. B. The ratio of products to reactants at equilibrium is constant. C. The concentrations of products present at equilibrium are constant. D. The concentrations of ...

*September 8, 2016*

**chem**

Which rate constant would result in the fastest reaction? A. 1.3 × 10^3 L/mol · s B. 2.8 L/mol · s C. 9.5 × 10^-2 L/mol · s D. 4.2 × 10^-3 L/mol · s i think that it is answer c as it has the highest values plus a negative exponent

*September 8, 2016*

**chem**

A graph of experimental data is a straight line when ln[H2] is plotted versus time. Which rate law fits the data? A. Rate = k(ln[H2]) B. Rate = k/[H2] C. Rate = k[H2] D. Rate = k[H2]2 I think A as it fits the constant for a straight line. what do you think?

*September 8, 2016*

**chem**

If a reaction rate increases with temperature, how will the rate constant of the reaction change with temperature? A. The rate constant only changes upon addition of a catalyst to the reaction. B. The rate constant will decrease with temperature. C. The rate constant will not ...

*September 8, 2016*

**chem**

What happens during the intake stroke of a four-stroke internal combustion engine? A. The piston moves downward, creating a partial vacuum that draws in air and fuel. B. The piston moves downward as a result of the air/fuel mixture doing work on it. C. The piston moves upward...

*September 8, 2016*

**math help**

find the equation to the tangent line of the parabola given by x^2=2y at point (3, 9/2)

*September 4, 2016*

**calculus**

find the area of the parallelogram that has vectors as adjacent sides u = -2i +j +5k v = 4i -3j -3k

*August 30, 2016*

**calculus**

find the triple scalar product u . (v * w) for the vectors u= (5, 9, -6) v= (5, 8, -1) w= (-2, 8, 3)

*August 30, 2016*

**Basic Statistics**

home / study / questions and answers / math / statistics and probability / the manager of a vacation resort has claimed that, ... Question The manager of a vacation resort has claimed that, on average, a guest spends at least $1600 at the resort during a one week stay, ...

*February 4, 2016*

**Math**

Thank you Graham

*September 8, 2013*

**Ms. Sue**

Ms. Sue, would you mind assisting me with this math problem?

*September 8, 2013*

**Math**

A real estate salesperson bought promotional calendars and date books to give to her customers at the end of the year. The calendars cost $0.75 each, and the date books cost $0.40 each. She ordered a total of 600 promotional items and spent $380. How many of each item did she ...

*September 8, 2013*

**math**

anyone...?

*September 8, 2013*

**math**

A real estate salesperson bought promotional calendars and date books to give to her customers at the end of the year. The calendars cost $0.75 each, and the date books cost $0.40 each. She ordered a total of 600 promotional items and spent $380. How many of each item did she ...

*September 8, 2013*

**Ms. Sue**

Hello, ms sue can you break down bob's response. greatly appreciated

*September 8, 2013*

**math**

A recipe uses 5 cups of flour to 1 1/6 cups of milk. If you have 2 cups of flour, how much milk should you use?

*September 8, 2013*

**math**

3(x-4)=3

*September 8, 2013*

**physics**

Two blocks m1 = 9.1 kg and m2 = 5.6 kg are connected by a homogeneous rope that has a mass of mr = 1.50 kg. A constant vertical force, F = 193.0 N, is applied to the upper block. What is the magnitude of the acceleration of the system?What is the magnitude of the tension in ...

*September 23, 2012*

**Physics**

Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 22 kg, m2 = 21 kg, and m3 = 33 kg. The pulling force is equal to T3 = 53 N. What is the ...

*September 23, 2012*

**physics**

Two blocks with masses M1 = 3.9 kg and M2 = 5.0 kg are connected with a massless string over two massless and frictionless pulleys, as shown in the Figure. One end of the string is connected to M1 while the other end is fixed. What is the acceleration of mass M2

*September 23, 2012*

**Physics**

A stone is aimed at a cliff of height h with an initial speed of v = 60.0 m/s directed 25.0° above the horizontal, as shown in the Figure below by the arrow. The stone strikes at A, 4.30 s after launching. What is the height of the cliff?

*September 16, 2012*

**Physics**

The diagram below shows two vectors, A and B, and their angles relative to the coordinate axes as indicated. DATA: α= 45.9o β= 57.6o |A| = 7.9 cm. The vector A - B is parallel to the -x axis (points due West). Calculate the magnitude of the vector A+B. I found all ...

*September 16, 2012*

**physics**

A gun shoots bullets that leave the muzzle with a speed of 341 m/s. If a bullet is to hit a target 171 m away at the level of the muzzle, the gun must be aimed at a point above the target. How far above the target is this point?

*September 15, 2012*

**statistics**

Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a scale from 1 ...

*July 6, 2012*

**Math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.

*June 21, 2012*

**Math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.

*June 21, 2012*

**statistics**

The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?

*June 9, 2012*

**Math**

How would i change x-4y= -20 to slope intercept form?

*April 26, 2011*

**English**

Which is correct? 1. What did you do for the winter vacation? 2. What did you do for winter vacation? I think #2 is correct, if so ( or not ) how do I back this up with a specific rule?

*February 20, 2011*

**math**

im smarter than you guys its a number divided by 30

*September 1, 2010*

**OPERATING SYSTEM**

Hi, I need help with these questions. I have tried to find them but could not. 1.OLE is now referred to as ActiveX by Microsoft. 2.Embedded objects will travel with the destination document. 3.Linked objects will travel with the destination object. 4.A(n) ____ is a file that ...

*February 10, 2010*

**english**

so which one is the right answer!!!

*April 28, 2008*

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