Friday

November 27, 2015
Total # Posts: 292

**chemistry**

calculate the pressure when 57 g of flourine at 55 degrees celsius is confined to a 152 liter container.
*April 22, 2012*

**Chemistry**

help...If exactly 5.0 mL of HNO3 will neutralize 15 mL of 2.0 M NaOH, what is the molarity of the HNO3 solution? Have no idea what to do. thank you.
*March 25, 2012*

**Statistics**

Suppose that the travel time from your home to your office is normally distributed with a mean of 40 minutes and standard deviation of 7 minutes. If you want to be 95% certain that you will not be late for an office appointment at 1:00pm, what is the latest time that you ...
*March 20, 2012*

**chemistry**

So i found the solubility to be x=0.001296, is this the concentration of I^-? can i multiply this by 30mL to get my moles?
*March 16, 2012*

**chemistry**

how can i calculate the solubility with the information given ? in class we use concentrations to find solubility
*March 16, 2012*

**chemistry**

A 30.00mL sample of a clear saturated solution of PbI2 requires 14.7mL of a certain AgNO3 for its titration. I^-(saturated PbI2)+Ag^+(from AgNO3)--> AgI(s) What is the molarity of this AgNO3? I'm not really sure where to start.
*March 16, 2012*

**chemistry**

A mixture formed by adding 55.0 mL of a 1.5x10^-2 M HCl to 140 mL of 1.0x10^-2 M HI. How do you calculate the pH for this problem?
*February 26, 2012*

**Chemistry**

Ba(OH)2(aq)+2CH3COOH(aq)=Ba(CH3COO)2(aq)+2(l)H2O what is the net ionic equation with phases?
*February 18, 2012*

**Math**

1.2mi.
*February 15, 2012*

**math**

Ms.Sue,is the ans 3?
*November 21, 2011*

**math**

4 1/5 divided 1 2/5 21/5 x 7/5 = ?
*November 21, 2011*

**Math**

thanks, I am stuck on this one 4 1/5 divided 1 2/5 21/5 x 7/5 =
*November 20, 2011*

**Math**

1. 2 1/3 x 3 1/2 = 2. 4 2/3 divided 7 =
*November 20, 2011*

**Math**

Thanks! can you please show me how to do these: 2 1/3 x 3 1/2 4 2/3 divided 7
*November 20, 2011*

**Math**

How do I estimate these? 1. 7/8 + 3 1/4 2. 5 1/9 - 2/3 3. 9 5/6 divided 2 1/8 4. 6 divided 1/2
*November 20, 2011*

**Math**

Ms. SUE, Is this correct? 4. 5/8 + 5/6 = 1 11/24 5. 13 1/2 + 7 2/3 = 21 1/6
*November 18, 2011*

**Math**

Ms. SUE, Is this correct? 4. 5/8 + 5/6 = 1 11/24 5. 13 1/2 + 7 2/3 = 21 1/6
*November 17, 2011*

**Math**

1. 9-5 3/4 = 2. 7/8 + 3 1/4 = 3. 5 1/9 -2/3 = 4. 5/8 + 5/6 = 5. 13 1/2 + 7 2/3 =
*November 17, 2011*

**Statisics Question Help Please**

The proportion of students in private schools is around 11%. A random sample of 450 students from a wide geographic area indicated that 55 attended private schools. Estimate the true proportion of students attending private schools with 95% confidence. How does it estimate ...
*October 6, 2011*

**geometry**

If EF = 4x - 19, FG = 3x - 9, and EG = 28, find the values of x, EF, ad FG.
*October 3, 2011*

**Physics**

A dart is thrown horizontally with an initial speed of 11 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.19 s later. (a) What is the distance PQ? (b) How far away from the dart board is the dart released?
*September 25, 2011*

**chemistry**

A small lake contains 0.0500 mi3 of water [H2O]. If the density of water is 1.000 g/mL, determine the volume (in gal) of water in the lake.
*September 8, 2011*

**Math Help**

When asked for standard deviation when dealing with grouped data for linear regression, do you give them for each the x and y variable or is there a way to configure for grouped data set? I have a Ti 84 plus calculator
*August 12, 2011*

**Stats**

The wildlife department has been feeding a special food to rainbow trout fingerlings in a pond. A sample of the weights of 40 trout revealed that the mean weight is 402.7 grams and the standatd deviation 8alE8 gr. What is the probability that the mean weight for a sample of 40...
*June 10, 2011*

**Calculus**

The table didn't turn out 0, goes with 0 underneath. 1 goes with 45.2 3 goes with 96.3 8 goes with 178.2 20 goes with 254.3 40 goes with 380.5
*May 9, 2011*

**Calculus**

A radar gun was used to record the speed of a racecar during the first 40 seconds while driving on a straight road. Use the chart to calculate the car's distance after 40 seconds using righthand sums. Is this an over or underestimate? Justify the answer. This is the table ...
*May 9, 2011*

**social study**

what made the hbc and nwc so imortant to this reion
*May 8, 2011*

**marketing**

Some firms are too production-oriented and inefficient. That can result in customers who are not satisfied and micro-marketing that can cost too much. Identify and explain at least three reasons for these marketing inefficiencies.
*May 6, 2011*

**Basic Marketing**

so much for trying to get a little help on which direction to go. I didn't want a full answer just sometips of where to do some research.
*May 6, 2011*

**Basic Marketing**

A large number of forces shape the marketing environment. The technological environment is one of the most important today. Discuss the impact of technology on marketing including, the opportunities, challenges and ethical issues technology poses for marketing.
*May 6, 2011*

**chemistary**

Explain the words element compound and mixture. Identify which substances ara element compound and mixture
*May 4, 2011*

**vocab**

Directions: Use the underlined etymology clues to help you choose the correct word that is missing from each of the following sentences. 3. The [underlined](Middle English, from Old French boc, "male goat")[/underlined] had a physically demanding job. A. son B. ...
*April 25, 2011*

**Physics**

a carton of eggs sits on the horizontal seat of a car as the car rounds a 26 meter radius bend at 16.5m/s. what is the minimum coefficient of friction that must exist between the carton and the seat if the eggs are not to slip?
*April 25, 2011*

**Physics**

a carton of eggs sits on the horizontal seat of a car as the car rounds a 26 meter radius bend at 16.5m/s. what is the minimum coefficient of friction that must exist between the carton and the seat if the eggs are not to slip?
*April 25, 2011*

**math**

a vector has a magnitude of 18.3 cm and a direction of 38 degrees. find the magnitude of its vertical and horizontal components to the nearest tenth.
*April 19, 2011*

**Geometry**

In the accompanying diagram, ABC and AB are congruent to BC. If the coordinates of C are (2,3) and the coordinates of B are (0,0), find the coordinates of A.
*April 7, 2011*

**Chemistry**

how do you compensate for coefficents while using a BCA chart? I know that you have to while using an ICE chart by multiplying by 2 when the coefficient is 2 etc, so thats why I was wondering...
*March 24, 2011*

**earth**

How many minutes does it take for light from the sun to reach the earth?
*March 22, 2011*

**Algebra 1**

To train for a race, Will begins by jogging 11 minutes one day per week. He increases his jogging time by 5 minutes each week. Write the general term of this arithmetic sequence, and find how many whole weeks it takes for him to reach a jogging time of one hour
*March 7, 2011*

**Algebra 1**

Evaluate the given binomial coefficient ( 8 ) 4
*March 7, 2011*

**Alegbra 1**

The function A = A0e-0.01386x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 500 pounds of the material are initially put into the vault, how many pounds ...
*March 7, 2011*

**Algebra**

Solve the problem. A salesperson gets a commission of $600 for the first $10,000 of sales, and then $300 for each additional $10,000 or partial of sales. Let S(x) represent the commission on x dollars of sales. Find the value of S(45,000)
*February 27, 2011*

**Algebra 1**

Larry has $2600 to invest and needs $3000 in 11 years. What annual rate of return will he need to get in order to accomplish his goal, if interest is compounded continuously?
*February 22, 2011*

**Algebra 1**

Use Cramer's rule to solve the system. -2x - 2y = -16 2x + 3y = 23
*February 18, 2011*

**Algebra 1-Matrix**

In a certain county the proportion of voters in each age group registerd as Republicans and Democrats or Indpendence is given by the following matrix which is called A. 18-30 31-50 Over50 Republican 0.40 0.30 0.70 Democrat 0.30 0.60 0.25 Indpendent 0.30 0.10 0.05 The ...
*February 18, 2011*

**math**

factor y^2-81 (y+9)(y-9) have i factored it correct?
*January 19, 2011*

**Math**

Solve by using the multiplication principle -2x> 1 over 9 I have tried this problem and can get no where with it can someone please help me????
*January 19, 2011*

**College Algebra**

f(x)=3.1ã(x+19 1.Decribe the graph be obtained using transformations of the square root function. First, vertically stretch the graph of f (x) = by the factor 3.1; then shift the results up 19 units. 2.Determine how to tell the model describes the actual height of...
*January 14, 2011*

**English1**

Underline the correct pronoun of each pair in parentheses. 1. Women (who, whom) raise families do as much work at home as at their jobs. Whom 2. In North America society, it is still mainly women (who, whom) cook dinner, clean the house, check the children’s homework, ...
*January 5, 2011*

**English 1**

Underline the correct pronoun of each pair in parentheses. 1. Women (who, whom) raise families do as much work at home as at their jobs. whom 2. In North America society, it is still mainly women (who, whom) cook dinner, clean the house, check the children’s homework, ...
*January 5, 2011*

**English 1**

Underline the correct pronoun in parentheses. 1. Many so-called Founding Fathers are famous one or two of (his, his or her, their) accomplishments, but anyone who knows (his, his or her, their) history knows that Franklin is known for many things, including (his, her, his or ...
*January 5, 2011*

**English 1**

Underline the correct pronoun of each pair in parentheses. 1. Women (who, whom) raise families do as much work at home as at their jobs. Whom 2. In North America society, it is still mainly women (who, whom) cook dinner, clean the house, check the children’s homework, ...
*January 4, 2011*

**English 1**

Combine each set of sentences into one sentences so that it contains two independent clauses. Use a semicolon correctly between the two clauses. 1. Tesla was born in what is now Croatia and studied at the Technical University at Graz, Austria. He excelled in physics, ...
*January 4, 2011*

**English 1**

1. Many so-called Founding Fathers are famous one or two of (his, his or her, their) accomplishments, but anyone who knows (his, his or her, their) history knows that Franklin is known for many things, including (his, her, his or her, their) inventions. their, his or her, ...
*January 4, 2011*

**Humanities **

how does humanities differ from Middle Ages to contemporary times.
*January 4, 2011*

**Physics**

162.533N
*December 20, 2010*

**Social Studies**

What are 6 significant events important to Americans that occurred during World War II?
*December 10, 2010*

**physics**

Henry drives off a 200m high cliff at 132m/s.How far out,how far down,and how far all together did he travel in 2.6seconds
*December 2, 2010*

**physical science**

a 2.0 kg rock sits on the edge of a cliff 12m above the beach. The rock falls off the cliff. How much kinetic energy will it have just before it hits the beach?
*November 22, 2010*

**cmo155**

Students are often confused about the use of the words good and well in their writing. Write a 100-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the book that are ...
*November 16, 2010*

**chem**

Which has highest boiling point? H20, H2S, H2Se, H2Te i know its H20, but why? is it because its dipole dipole? does it have to do with electronegative, or polarity?
*October 11, 2010*

**spanish**

Look at your conjugations yo- pienso tu- piensas el/ella/ud.- piensa nosotros- pensamos ellos(as)/uds.- piensan Tu would be piensas
*September 9, 2010*

**Math**

When would you make a list to sove a problem?
*September 2, 2010*

**us history**

where can i go to read a text book if i forgot it at school
*August 26, 2010*

**math**

figured it out on my own thnx
*August 19, 2010*

**math**

find a 9 digit # that fits. the first3 #'s equal 1/3 of the last 3. The middle 3 #'s are the result of subtracting the first 3 from the last 3. All the digits from 1-9 are used only once. What is the number
*August 19, 2010*

**Science**

Easy! Metabolism is the rate of how fast your food digests
*July 26, 2010*

**History 1301**

READ YOUR BOOK!!!
*July 19, 2010*

**Environmental Science**

Hi Had a look at the sites, couldn't find any help. Do you know about IPCC? Cheers Brad
*July 12, 2010*

**Environmental Science**

Hi does anyone know how to calculate the UN's de facto temperature target using max co2 relative to 2008 that can be in the atmpsphere to the nearest Gtc? please
*July 12, 2010*

**physics**

A bowling ball weighing 71.2 is attached to the ceiling by a 3.90 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured at 4.20 .
*June 15, 2010*

**science**

a balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa?
*May 20, 2010*

**math**

From the information you've given, the only thing i can come up with is that the animals cost one dollar each since it's 100 dollars for 100 animals
*May 18, 2010*

**physics **

when you connect an unknown resistor across the terminals of a 1.50 V AAA battery having a negligible internal resistance, you measure a current of 18.0 mA flowing through it .A)what is the resistance of the resistor. B) if you now place the resistor across the terminals of a ...
*May 11, 2010*

**physics **

a 40.0 ohm resistor and a 90.0 ohm resistor are connected in parallel, and the combination is connected across a 120 V dc line. A)what is the resistance of the parallel combination. B)what is the total current through the parallel combination. C)what is the current through ...
*May 11, 2010*

**physics**

a piece of wire has a resistance of R , it is cut into three pieces of equal length,and the pieces are twisted together parallel to each other. what is the resistance of the resulting wire in terms of R
*May 11, 2010*

**physics **

a 500.0 ohm resistor is connected in a series with a capacitor.what must be the capacitance of the capacitor to produce a time constant of 2.00 s
*May 11, 2010*

**physics **

a 1.5 kg box moves back and forth on a horizontal frictionless surface between two different springs. the box is initially pressed against the stronger spring compressing it 4.0 cm , and then is released from rest,A) by how much will the box compress the weaker spring,B) what ...
*April 27, 2010*

**chemistry**

what is the molar concentration of an aqueous NaOH solution when 45.0 grams are dissolved in water to make 100mL of solution
*April 27, 2010*

**chemistry**

Write a net equation for the reaction between aqueous solutions of Na2HPO4 and H2CO3.
*April 26, 2010*

**Algebra**

Without writing them all out, what is the number of subsets of set A = {tongue, ear, mouth, eye, nose, cheek, forehead, neck, shoulder}?
*April 15, 2010*

**physics**

Bumpers on cars are not of much use in a collision. To see why, calculate the average force a bumper would have to exert if it brought a 1200 kg car (a so-called "compact" model) to a rest in 15 cm when the car had an initial speed of 2 m/s (about 4.5 mph). Bumpers ...
*April 14, 2010*

**Physical Chemistry**

For part A, I'm plugging into the Arrhenius equation, ignoring A, and then dividing the 2 rates for each activation energy. I'm getting 1.027 for my particular set of numbers (Ea = 120 & 56) @ 293K. This isn't correct though.
*April 1, 2010*

**geometry**

What is the volume of a cone with a radius of 3 and a height of 19?
*March 16, 2010*

**trig**

how do you simplify "[sin(x)+tan(x)]/[1+sec(X)]"
*March 15, 2010*

**Physics**

An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum ...
*February 22, 2010*

**physics**

Also, I found horizontal velocity = 25m/s, but I don't know where to go from there.
*February 22, 2010*

**physics**

An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum ...
*February 22, 2010*

**Chemistry**

5,17
*February 20, 2010*

**survey math**

11110 base 2 = (?) base 10
*February 19, 2010*

**Math**

What do you mean?
*February 5, 2010*

**Math**

Solve each literal equation for the indicated variable 2x-3y=4 for x The answer is suppose to be x=3/2y+2 I don't understand how you do this problem?
*February 5, 2010*

**Math**

Solve each literal equation for the indicated variable. 4x-5y=10 for y (the answer is y=4/5x-2) How do you solve this?
*February 5, 2010*

**Physics II**

A block begins to slide down a ramp after being elevated to an angle of 55 degrees. What is the coefficient of static friction?
*February 2, 2010*

**10th grade english**

how the tone and purpose of each essay is different?
*December 21, 2009*

**10th grade english**

Write an essay comparing Baldwin's account of the Titanic with Rosenthal's account of his visit to Auschwitz.In your paragraph, explain how the tone and purpose of each essay is different. Support your argument with at least one example from each essay.
*December 21, 2009*

**calculus**

find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) iam getting the y^3 dx when i do seperation of variables how do i deal with this.
*December 16, 2009*

**calculus**

find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) iam getting the y^3 dx when i do seperation of variables how do i deal with this.
*December 16, 2009*

**math**

I'm thinking of TWO numbers between 1 and 4 and so are you, what are the odds that we will have ATLEAST 1 number in common?
*December 13, 2009*

**7th grade science**

heterozygous dominant
*December 13, 2009*