# Posts by Jenny

Total # Posts: 1,619

**Chemistry**

What would the partial pressure of hydrogen in the gas collection tube be if the water in the tube was 25.0 mm above the water level in the beaker, the room pressure was 655 mm Hg, and the temperature of the room was 22 degrees C?

**english synthesis**

Betty is a pretty girl. Fatimah is a pretty girl. Both_______________________________________________.

**math**

use branching method or model. I think the answer is $90. 1u is 15. I am not so sure.

**Chemistry**

I figured it out, deltaH is in kJ/grams which is 68. So 20.0gx(1168kJ/68g)=342.9 kJ.

**Chemistry**

How much heat is absorbed/released when 20.00 g of NH2 reacts in the presence of excess O2 to produce NO and H2O according to the following chemical equation: 4NH3 + 5O2 --> 4NO + 6H2O, deltaH= +1168 kJ. The answer is 342.9 kJ of heat absorbed. I want to know how to ...

**Physics**

In deep space, a small rock orbits an asteroid. The circular, orbit radius is 1037m and the velocity of the rock is 8.02m/s. Find the mass of the asteroid.

**Statistics**

The TreeDropped Fruit Company wants to sell its apples in pink and yellow gift boxes. To design the boxes, the company needs to estimate the average diameter of their apples. A random sample of 50 apples has a mean of 4.1 inches. Using previous research you assume a population...

**Math (ASAP)**

Yes I did.

**Math (ASAP)**

Find the variable for the following 3x3 matrix. |x 3 -1 2 1 -2 4 1 x|

**Math**

Yes.

**Math**

I need help with this ASAP. Thanks so much!

**Math**

Find the variable for the following 3x3 matrix. |x 3 -1 2 1 -2 4 1 x| Note: This entire matrix =10

**Chemistry**

Suppose that a mixture of ice and water is placed in a refrigerator that is held at the freezing point of water, exactly 0.0C. Calculate deltaS for the ice-water mixture, deltaS for the refrigerator, and deltaStotal when 5.00g of ice forms. Is this process spontaneous? Is the ...

**Math**

A bag contains 22 1\2 cups of flour. A recipe for pancakes uses 1 1/4 cups of flour. How many batches of pancakes can be made with one bag of flour?

**Algebra**

Please help! I don't understand the question!

**Algebra**

If a=4.9 and b=1 5/9, the determine the value of the reciprocal of b/a. Express your answer as a common fraction.

**science**

is it possible for an object's weight to change while it's mass remains constant?

**Chemistry Rate Reaction**

What is the rate of the reaction: H2SeO3 + 6I- + 4H+ Se + 2I3- + 3H2O given that the rate law for the reaction at 0°C is rate = (5.0 × 10^5 L5mol-5s-1)[H2SeO3][I-]^3[H+]^2 The reactant concentrations are [H2SeO3] = 1.5 × 10^-2 M, [I-] = 2.4 × 10^-3 M, [H...

**Statiatics**

A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 5 answer choices a, b, c, d, e and only one correct answer. What is the probability that she answered neither of the problems correctly? Do not round your ...

**Math**

Thank you! (:

**Math**

Can you check my work and tell me if I did anything wrong? 1. With the functions: f(x) = x^2 + 3x and g(x) = -3 + x what is f(x) + g(x)? Answer: x^2 + 4x - 3 2. With the functions: f(x) = x + 4 and g(x) = x -3 what is (f*g)(x)? Answer: x^2 + x - 12 3. With the functions: f(x...

**math**

Uncle Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5 mi. He plans to put the model on a 3.25 ft by 3.25 square table. On each side of the model he wants to leave at least 3 inches between the model and ...

**algebra**

Hi I need help with this question please. The base salary for a job is $3,000 per month. For each full year a person holds the job the salary increases by $300 per month. A) Write as a function where x is years worked and y is the total monthly salary. B)Solve the function if ...

**History**

Which of the following groups benefitted the least from the prosperity of the second industrial revolution? A. Farmers B. Railroad workers C. Factory workers D. Textile workers

**Help with math**

You can do 7/20 and multiply 7x5 and 20x5 to get 35/100.

**MATH HELP**

ohh ok now i understand thanks ms. sue

**MATH HELP**

six neighbors share 4 pies equally. how much of a pie does each get? three brothers share 2 sandwiches equally. how much of a sandwich does each brother get?

**Science**

Explain the motion of a baseball and the forces acting upon it as it leaves the pitcher’s hand and travels toward the batter at home plate. Identify the term applied to this type of motion.

**Statistics**

Did you ever buy an incandescent light bulb that failed (either burned out or did not work) the first time you turned the switch on? When you put a new light bulb into a light fixture, you expect it to light and most of the time it does. Consider 8-packs of 60-watt bulbs and ...

**Statistics**

The image of the public library is constantly changing, and their online services continue to grow. Usage of the library's home page grew by 17% during the past 12 months. It has been estimated that the current average length of a visit to the library's home pages is ...

**Statistics**

A company that produces rivets used by commercial aircraft manufactures knows that the shearing strength (force required to breaking) of its rivets is a major concern. The company believes the shearing strength of its rivets is normally distributed with a mean of 925 lbs and a...

**Math**

What is the smallest integer that can possibly be the sum of an infinite geometric series whose first term is 9? Please explain in steps.

**Math**

What is the smallest integer that can possibly be the sum of an infinite geometric series whose first term is 9? Please explain in steps.

**Math**

What is the smallest integer that can possibly be the sum of an infinite geometric series whose first term is 9? Please explain in steps.

**science**

How much heat in kcal must be added to 0.77 kg of water at room temperature (20°C) to raise its temperature to 50°C?

**statistics HELP!**

A data set includes body temperatures of healthy adult humans for which 98.1F and s= 0.56F. What is the best point estimate of the mean body temperature of all healthy humans? Using the sample statistics, construct a confidence interval estimate of the mean body temperature of...

**Algebra**

To solve 9x^2-12x+4=49 by using the Square Root Property, you would first rewrite the equation was as A. 9x^2-12x-45=0 B.(3x-2)^2=+/-49 C.(3x-2)^2=7 D.(3x^2)^2=49

**statistics**

In a test of the effectiveness of garlic for lowering cholesterol, 47 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/dL) have a mean of 3.8 and...

**Find the probabilty**

Find the probability of S^2 3.3 1 6.3 49

**Calculus**

Okay, thanks

**Calculus**

My question: An equation of the line tangent to the graph of f(x) = x(1 - 2x)3 at the point (1, –1) is?? My answer: y = –2x + 1

**Subtraction equation**

Please help The original acreage was 125,000, recentlly they expanded their boundaies by 93,533 areas, how do I write subtraction equation to find new acreage

**Math**

Given that x<5, rewrite 5x- (x-5) without using the absolute value signs. The () are absolute value signs.

**Language**

Is being delusional a characteristic trait

**Math: Reiny**

I already posted this question, and Reiny had a question about the question. How many square units are in the region satisfying the inequalities y>=(x) and y<=-(x)+3? Express your answer as a decimal. * the () are absolute value signs. •Math - Reiny, Wednesday, ...

**Math**

How many square units are in the region satisfying the inequalities y>=(x) and y<=-(x)+3? Express your answer as a decimal. * the () are absolute value signs.

**English**

Would you consider delusional a personality trait if not what other word that is a trait and is similar to delusional

**math**

Oh God! I made a big mistake at this part 33 - 2y = -1 -2y = 32 I should improve

**math**

If both numerator and denominator of a fraction are increased by one, the fraction formed is 2/3. if both numerator and denominator are decreased by two, the fraction formed is 3/5. what is the fraction formed, if both numerator and denominator are increased by four? Please ...

**finance**

The countries of Stabilato and Variato have the following average returns and standard deviations for their stocks, bond, and short-term government securities. What range of returns should you expect to earn 95 percent of the time for each asset class if you invested in ...

**finnce100**

In late 2010, you purchased the common stock of a company that has reported significant earnings increases in nearly every quarter since your purchase. The price of the stock increased from $ 12 a share at the time of the purchase to a current level of $ 45. Notwith-standing ...

**math**

John bought a total of 30 white and brown pens for a total of $32. The cost of each white pen is 70 cents more than the cost of each Brown pen. Which would be the possible value of the cost of each Brown pen( in cents)? Please help me in forming a equation.

**math**

Y = 0.93

**math**

The cost of printing the first fifteen hundred copies of a book is $1500. It costs y dollars to print each subsequent copy. The cost of printing the first 7500 copies of the book is $7080. Find Y. Please explain how to solve it.

**math**

6/(2x - y) + 7/(3y -x)= 7 4/(2x - y) + 14/(3y -x) =6 Please explain step by step to solve this equation.

**math**

There are 10 children (aged 1 to 10 years) who have equal amounts of money. In the first transaction the eldest child gives one rupee to every child younger to him. In the second transaction, the second eldest child gives one rupee to every child younger to him. This type of ...

**Math**

68

**math**

What is 1 plus 1

**geometry**

sample space. Trust me I am a college student

**Math**

Larry kicked a ball at a 50 degrees angle to a direction north. It travels a horizontal distance of 20ft 9inchs before hitting the ground .The ball travels exactly 1min 18 sec after hitting the ground. The ball hit a mud and cause dthe ball to subside 2inches. Question: how ...

**Physics**

The 22 cm diameter disk in the figure below can rotate on an axle through its center. At the end of this problem, you will calculate the magnitude and direction of the net torque about the axle when F = 22 N. The net torque is just the sum of the individual torques. Depending ...

**Chemistry**

2-hexanol

**Math**

Micheal gave 1/12 of his money to Sally and 1/5 of his remaining money to Heidi. If he still had $704, how much money did he have originally? The answer is $960 I was told to take the fraction of what was left and multiply it by what Heidi took: 1/12 + (11/12 x 1/5) = 11/60 11...

**Math**

If the product of 4 consecutive integers is equal to one of the integers, what is the largest possible value of one of the integers? The answer is 3, but I do not understand how it is 3. I tried writing out 4 consecutive #'s such as 1,2,3,4 or 0,1,2,3. 0 x 1 x 2 x 3 = 0

**Math**

Thank you

**Math**

If 8% of c is equal to 12% of d, which of the following is equal to c + d? a)1.5d b)2d c)2.5d d)3d e)5d I tried replacing the variables with numbers to make it easier. I came up with 8% of 600 = 12% of 400, both equal 48. And then 600 + 400 = 1000 but that's not one of the...

**Math**

If the side of a square is doubled in size to 8", by what percent did it's area increase?

**Math**

A 5" by 7" picture is enlarged to 8" x 10". By what percent did it's area increase?

**math models**

62.7

**English/research**

I want to find about the famous pharmaceutical companies in Chicago. Would mind telling me which website I can find.

**writing/ macolm**

Forget about above question Why did Malcolm convert to a particular form of Islam taught by Elijah Muhammad?

**writing/ macolm**

What new life did Malcolm pursue i n Roxbury, Massachusetts? What changes were visible in Malcolm’s clothing? What were the most negative consequences f or Malcolm in choosing that lifestyle? During his incarceration, what did Malcolm do?

**sandycreek**

unsure

**math**

In my homework it says to put 1,3,4,and 8 to equall 18 only using the symbols +.-,x, and ( ). What is the answer to that?

**algebra**

Express the statement in terms of an inequality involving an absolute value. (Give your answer in terms of hours.) The arrival time t of train B must be at least 10 minutes different from the 2:00 P.M. arrival time of train A.

**physics**

a boy stands at a distance of 168m from a high wall . he produce a sound and haers after 1 second.calculate the speed f sound in air

**Sociology**

Drawing on the ideas of Lenski, Marx, Weber, and Durkheim, what would you say is the biggest challenge facing us as members of modern societies? That is, in what way does modern society pose a problem for people that did not exist when people were living in traditional ...

**Physics**

Two 10-cm-diameter charged rings face each other, 20cm apart. The left ring is charged to -22nC and the right ring is charged to +22nC . What is the magnitude of the electric field E⃗ at the midpoint between the two rings?

**Biology**

You are testing the injection of a new chemical on mice to see if it can shrink tumors. To properly administer the chemical, it must be dissolved in water with ascorbic acid (vitamin C) and injected into the middle of a tumor. As a positive control, you plan to similarly ...

**Biology**

While performing an experiment, a positive control group is given a treatment that was used one time previously in another experiment. This time, however, the positive control does not give the expected result that you received last time. Which of the following is a likely ...

**Biology**

Or would it be growth of E.glados on media with another form of antibiotic resistance on it? I know that it is simplest, but I'm not sure if I'm missing the purpose of a positive control

**Biology**

Would it be simply if E. glados grows on media without antibioitics in it?

**Biology**

You want to know if a new species of bacteria we identified (E. glados) has resistance to the antibiotic valinomycin. You make “plates” of LB-agar to culture bacteria on. Some of these are regular LB-agar plates that any bacteria will grow on and others have ...

**what does this mean?**

So to restate the case means that I just have to put it in my own words?

**what does this mean?**

This is business law class, the question is An employee of a self-service liquor store watched Lee pick up two bottles of cognac worth $25 each. Lee concealed one of the bottles in his pants and held the other in his hand. When approached by the employee, Lee returned both ...

**History**

Sorry for the confusion. For ethnic neighborhoods I have advantages: it helps to preserve and share the culture and it keeps families close. Disadvantages: overcrowding, spreading of diseases, and they may not socialize with groups outside their ethnicity.

**History**

An ethnic neighborhood is where immigrants all of the same culture reside right?

**History**

For immigration I put cultural diversity and learning new cultures as an advantage. I just meant like some of my answers seem the same like for both ethnic neighborhoods and immigration for a disadvantage I put overcrowding. Do you think its bad I used the same answer for both?

**History**

Advantages and disadvantages that ethnic neighborhoods offered to their residents? I previously did an essay of advantages and disadvantages of immigration to the U.S. and when I search online I am getting the same answers. So I am scared I answered one of them wrong. I keep ...

**History**

Thank you guys.

**History**

I need to come up with 3 questions to ask farmers about new machinery and farming techniques that helped them farm the Great Plains. I know the new machinery: a plow that made several furrows at once. Harrows, equipped with spring teeth to dislodge debris and break up the ...

**History**

I was given a cause and effect chart. The causes state: Slavery is abolished, small farmers lack capital to buy land, and planters need a stable workforce. In the middle is says sharecropping and tenant farming. Then it points below to effects which are farmers are caught in a...

**History**

Thank you ma'am.

**History**

All I see in my book is "Confederate cannons began the heaviest artillery barrage of the war" and confederates formed in a line a mile long and three rows deep. Hundreds of canister shells rained down on the soldiers, tearing huge gaps in their ranks. Is any of that ...

**History**

What was the impact of technology on the Pickett's Charge?

**History**

Ok I got the differences. I need one more similarity though. For the first similarity I put they both migrate to better their lives. What should I put for the second one

**History**

oh and it means human migration

**History**

Nah it wasn't specific. It just asks to describe at least two similarities and two differences between American migration today and migration in the mid 1800s. I think just in general.

**History**

I need 2 similarities and 2 differences of migration today and migration in the 1800s?

**Physics**

a 68kg skier is speeding down a ski slope that makes a 32 angle with the horizontal. The co-efficient of friction between the skies and the snow is 0.05. What is the acceleration of the skier? I want to understand how to do this