# Posts by Stacy

Total # Posts: 609

**Chemistry**

How would we make 500mL of a 1.5 percent w/v solution of KCl in water?

**chem**

Ethanol, C2H6O, is very soluble in water. Describe how water dissolved ethanol.

**Chem**

To a tank already containing N2 at 2.0 atm and O2 at 1.0 atm, we add an unknown quantity of CO2 until the total pressure is 4.6 atm. What is the partial pressure of the CO2?

**Chem**

How would we make 500mL of a 1.5 percent w/v solution of KC1 in water?

**Chem**

In carbon monoxide poisoning the hemoglobin is incapable of transporting oxygen to the tissues. How does oxygen get delivered to the cells when the patient is put into a hyperbaric chamber?

**Chem**

At constant temperature, a sample of 3.0L of Argon gas at 2.0 atm is compressed until the new pressure is 3.524 atm. What is the new volume?

**Chem**

How would we make 500mL of a 1.5 percent w/v solution of KC1 in water?

**Chem**

Balance C3H6 + O2 > H2O + CO2

**Chem**

What is the [H3O+] of an aqueous solution having a pH of 11?

**Math**

The mean of 40 scores is found to be -29. If each score had 5 added to it, and then divided by -4, what would the mean of these new scores be?

**Math**

The mean of 40 scores is found to be -29. If each score had 5 added to it, and then divided by -4, what would the mean of these new scores be?

**Math**

The mean of 40 scores is found to be -29. If each score had 5 added to it, and then divided by -4, what would the mean of these new scores be?

**maths**

how many piece of 3/4 inch long can be cut from a foot long card

**statistics**

. Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?

**Am. History**

thank you

**Am. History**

Evaluate President Kennedy’s performance during the Cuban Missile Crisis. Did he give up too much to the Soviets or were his strategic decision sound?

**Constitutional Law**

thank you very much for the help

**Constitutional Law**

are there any websites available that will provide information that can back this up?

**Constitutional Law**

is the exclusion of evidence that is obtained through an improper search the appropriate response to an improper search or is there a better way to deal with such situation

**Law**

as always, just what i needed. thank you very much.

**Law**

How have Congress and the courts justified placing limits on the freedom of speech?

**Sign Language**

English: What will the weather be like today? ASL: TODAY WEATHER LIKE WHAT? English: The sun will be out and it will be windy. ASL: WILL SUNSHINE (shoulder shift) WIND. English: I thought it was going to rain. ASL: ME THINK SHOULD RAIN English: It is going to rain tomorrow on ...

**math**

what is 3/8, 1/4, 3/4 in order from least to greatest

**algebra**

$6300 is invested, part of it at 10% and part of it at 69%. For a certain year the total yield is $598.00. How much invested at each rate?

**Economics**

Would the correct answer be : d. By consumers and suppliers interacting through market forces

**Economics**

How does a laissez faire economy make the decision about what goods and services will be produced? a.) Lawmakers in government vote on what will be produced b.) Producing firms decide what they choose to produce, cusumers will follow c.) What will be produced is determined by ...

**what does this mean?**

What does it mean when my teacher says "quantify your conclusion." ???

**Budgeting**

A well-established coffee shop, the Hot New Café, wants to build a new café for increased capacity. It’s expected sales are $800,000 for the first 5 years. Direct costs including labor and materials will be 50% of sales. Indirect costs are estimated at $100,...

**Constitutional Law**

That is exactly what I needed, thank you very much.

**Constitutional Law**

What authority stems from the necessary and proper clause? just wanting some links that will help get the ball rolling please.

**COLLEGE CALCULUS. HELP!**

thanks byant

**COLLEGE CALCULUS. HELP!**

i got the result number 1 is cos(x)cos(sin(x)). im still stuck with number 2.

**COLLEGE CALCULUS. HELP!**

i don't know how to start this problem. i don't like cos and sin. im so confuse. 1.f(x)=sin(sin(x)), find f'(x) 2.f(x)= 4sin^4x, find f'(x). this problem i couldn't find it in my math book. i never see it before. because of sin exponent 4 -->sin^4

**Math**

What is 1/2+1/3 EQUAL

**COLLEGE CALCULUS. HELP!**

1. If f(x)=sin(x^2), Find f'(x) and f'(1) 2. If d/dx(f(3x^3))=9x^2, Calculate f'(x). 3. Let f(x)=cos(6x+6), find f'(x) 4. Let f(x)=-2sec(2x), find f'(x)

**Calculus**

a ladder is 20 feet long and its top is slidding at a constant rate of 2 feet per second. How fast is the bottom of the ladder moving along the ground when the bottom is 16 feet from the wall?

**Chemistry**

How much energy in Joules is released from the complete combustion of one mole of glucose?

**trig**

Given theta is in the standard position and is in the first quadrant , if the terminal side of the angle theta is parallel to the line on ,find the measure of theta in degrees.

**Physics**

You are driving south on a highway at 24.0 m/s (approximately 54 mi/h) in a snowstorm. When you last stopped, you noticed that the snow was coming down vertically, but it is passing the windows of the moving car at an angle of 26.6° to the horizontal. Calculate the speed ...

**Physics**

A hunter aims directly at a target (on the same level) 61.0 m away. If the bullet leaves the gun at a speed of 176 m/s, by how much will it miss the target? At what angle should the gun be aimed so as to hit the target?

**Physics**

Thanks so much!!! If you have time can you help me figure out their max speeds?

**Physics**

In a 100 m race, Maggie and Judy cross the finish line in a dead heat, both taking 10.6 s. Accelerating uniformly, Maggie took 2.20 s and Judy 2.90 s to attain maximum speed, which they maintained for the rest of the race. What was Maggie's acceleration?

**algebra**

-5-y-1=0 -6 = y -6 = x+1 -7 = x

**sociology**

thank you so much for clearing that up, you are the best

**sociology**

the only thing that i get from the reading material that is provided to me is: the obstruction that terrorism places on the pursuit of peace is the unknown (the fact that it is hard to figure out who the terrorist is and whom they are acting on behalf of) I just did not know ...

**sociology**

what is the obstruction that terrorism places on the pursuit of peace and what approaches to peace are deterred by terrorism

**criminal investigations**

how does investigating a robbery differ from investigating an assault

**geometry**

The legs of a right triangle measure 3x 8. A cube has edge lengths and 15. If the hypotenuse measures of 6 inches. What is the 3x+3, what is the value of x?

**physics**

How long does it take a 25 kW steam engine to do 5.6 × 10^7J of work? Answer in units of s

**Home- Economics**

10 careers in home management

**Science**

(2)population B competed more successfully for food than population A

**Calculus**

Thank you so very much for your help....

**Calculus**

Stuck on this problem. Please help! 1+u^4/u du

**math**

The median weekly earnings for people working in sales is $450. Assume that the weekly earnings are approx. normally distributed with a standard deviation of $90. What is the mean weekly earnings for people working in sales?

**Math**

The median weekly earnings for people working in sales is $450. Assume that the weekly earnings are approx. normally distributed with a standard deviation of $90. What is the mean weekly earnings for people working in sales?

**physics**

An ore car of mass 42000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 6.8 m lower vertically, is a horizontally situated spring with constant 3.8 x 10^5 N/m. The acceleration of gravity is 9.8 m/s^2. How much is the spring compressed ...

**Calculus**

Thank you so much. I had the integral part, but was off on the rest. :)

**Calculus**

definite Integrals (using fundamental Theorem) Evaluate from -1 to 2(x^2 - 4x)dx

**Math**

Which probability interpretation is most reasonable to use: relative frequency, subjective, or classical? The probability your company's sales will exceed seven million dollars this year. Is this relative frequency? The probability that the S&P will increase or decrease by...

**Math**

Thanks!!

**Math**

That's the question in my textbook. I thought it wasn't possible. So the answer would be 0. Correct?

**Math**

What is the probability of rolling a two and a five in a single toss of a die?

**Pre-Calculus**

Thank you Steve. But i'm still a little confused. The answer in my answer list shows minimum as 620 at t=3.?

**Pre-Calculus**

This is application question. Bacterial Control. If t days after treatment the bacteria count per cubic centimeter in a body of water is given by C(t) = 10t^2 - 120x + 800 0 <= t <= 9 Thn in how many days will the jcount be a minimum? I got this result: 20(t^2 - 6 + 40) ...

**Pre-Calculus**

Thank you so much. This is a great help. I can see where I started to go wrong.

**Pre-Calculus**

I'll rewrite the equation. y = f(x) = x^3 -12x + 12 -3 <= x >= 5

**Pre-Calculus**

I'm having problems solving this and showing the steps: Find the absolute maximum and absolute minimum, if either exists, for y = f(x)= x^3 - 12x + 12 -3 less equal to x greater than equal to 5

**Pre-Calculus**

Thank you so much for your help. Now that I look at it more closely. I understand what I wasn't seeing!

**Pre-Calculus**

Need help with the following along with all steps. Find y" for y = 3x + 4/x

**laguadia**

we are 95% confident that the mean number of weekly hours that u.s. adults use computers at home is between ?

**chemistry**

Assuming that the total volume does not change after 0.200 g of KCl is added to 1.0 L of a saturated aqueous solution of AgCl, calculate the number of moles of Ag+ ion in the solution after equilibrium has been reestablished. For AgCl, Ksp = 1.8 × 10¯10

**Eng comp**

thank you, I really like that website

**Eng comp**

which of the following statements about arguments is true -they always involve a direct conflict -they are always about something that has not yet been decided -they always call for some kind of action on the part of the reader -they try to establish some common ground with ...

**comp**

To avoid financial hardship during your golden retirement years, it is important not to depend on Social Security benefits. Is this a proper topic sentence, the subject is about Social Security being around in the future or not? Thank you!

**history**

The Indo-European migration brought many changes to several ancient civilizations. What major civilizations were impacted and what changes did they bring?

**Chemistry**

132. Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated...

**Physics**

A ball is thrown horizontally from a height of 29 m and hits the ground with a speed that is 4 times its initial speed What is the initial speed

**chemistry**

What are the major products produced by heating the following isomeric alkyl bromides with NaOEt? Name the products.

**math**

how many shelves measuring 8 in by 12 in can be made from a 36 in by 56 in plywood?

**home work help please**

I just wanted to find out if i should make a chart with these question and answer them or write it like as a essay thanks for you help

**home work help please**

Complete the Multiple Pathways to Learning assessment and the Personality Spectrum assessment. Relate results to your personal study habits. Prepare a 350- to 700-word paper where you answer the following questions: · How may you use the study techniques recommended for...

**literature**

what is a literary journal and how to start it

**Psy 202**

1. One of the reasons that certain advertisements are successful is because viewers want to behave like those they observe. What is the general term that psychologists use to describe this type of behavior

**Am. History**

as always, you have saved the day!! you are awesome. thank you.

**Am. History**

Immigration was a hot topic during this time period (1820-1850), and it remains a hot topic today. In what ways does immigration continue to shape our nation? can anyone "get the ball rolling" for me. not looking for an answer, just a starting point. maybe some ...

**Am. History**

i think that i figured it out...Democratic Culture?

**Am. History**

no ma'am. it is the beginning of a larger question. During the 1820 and 1830 a distinct American culture began to emerge. what philosophies, artists, and artistic works contributed to this cluture? what were the uniquely American themes explored within these works? I just ...

**Am. History**

During the 1820's and 1830's a distinct American culture began to emerge. what was this called? I think it is American Popular Culture.

**math**

thank you for explaining how you got to that answer.

**math**

572 is what percent of 680

**physics**

The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n = 1 labels the lowest, or "ground" state, n = 2 is the second state, n = 3 is the third state, and so on. If the ...

**Am. History**

thank you

**Am. History**

this is not a homework question but we are studying the Bill of Rights and my question is what, in laymans terms, is the significance of the 9th amendment? i have googled it and read many articles but i still can't get what it means. any information would be appreciated.

**marketing**

1. You are the marketing manager for HP laptop computers. Identify and briefly discuss the differences between the consumer market for laptops and the business market. Then give an example of each difference using college students as the consumer market and defense-related ...

**American History**

thank you very much SraJMcGin

**American History**

the colonials used both peaceful and violent methods to oppose the British policies imposed on America from 1763-1775. what is one violent way and one peaceful way

**Am. History**

thank you for the links they helped. i wasn't sure about 3 and 4.

**Am. History**

the question was to place events in chronological order 1. French and Indian War begins 2. New Englanders capture Frech port of Oswega 3. The last French fort falls in New York 4. British capture Montreal 5. Treaty of Paris am i right?

**early Am. History**

thank you for the links.