# Katherine

Newest questions and responses by Katherine-
## Chemistry

60cm3 of hydrogen diffused through a porous membrane in 10minutes.The same volume of gas G diffused through the same membrane in 37.4 minutes .Determine the relative molecular mass of G.(H=1)

*asked on January 4, 2019* -
## math

37.52 rounded to the nerast whole

*asked on December 5, 2018* -
## Math

A company paid $110,000 for a new 18-wheeler. When it is 9 years old it will be worth $20,000. Using straight-line depreciation, the value of the trick in dollars, V, is a linear function of its age in years, n. Find the function and the value when the

*asked on August 22, 2018* -
## Science

Hi, so there is a Japanese Exchange Science Program and i need a science experiment for my application. The experiement has to be done in America and then in Japan. I have been searching online for ideas but nothing seems to come up. Will someone help me

*asked on June 19, 2018* -
## History

Hi, I am doing a civics project and right now I have to find an article about firearms that isn't biased and represents two sides. Can someone help find an article?

*asked on May 3, 2018* -
## math

A store sells two types of nut mixtures. The standard mix contains 100 grams of cashews and 200 grams of peanuts and sells for $2. The deluxe mix contains 120 grams of cashews and 40 grams of peanuts and sells for $2.50. The store has 15kilograms of

*asked on April 20, 2018* -
## Physics

So tomorrow I have a presentation about the universal law of gravitation and my partner did not work! At all! I'm really upset right now and I'm having trouble with understanding about the orbit of the moon. The slide has to be short and simple and I dont

*asked on March 14, 2018* -
## Literature

Since I am working on a project based on the poem "here" by Aracelis Girmay, how do people usually feel when reading this? What mood does it create for the readers?

*asked on March 1, 2018* -
## math

I was trying to solve for X in the equation 4/3 - 4/x = 3x-2/ 3x. I got -1 but I know the answer isnt right. Can someone help me fix my mistake? Thank you

*asked on February 27, 2018* -
## Literature

I am confused in how hellen keller and minnie riperton correlate with the poem "here" by aracelis girmay. So can someone please help me understand that? Thank you (:

*asked on February 26, 2018* -
## Literature

Hi, I am working on a project I chose for the poem "here" by Aracelis Girmay and I dont understand one line which is " I am so worried for Jacques Cousteau. I do not want him to get eaten." If someone can explain it to me, it would be great! Thanks.

*asked on February 25, 2018* -
## Literature

Hi, I am currently working on a project for this poem: Because I wanted to write a poem that would make me push away from the table & say Damn, & turn my face, even though I never say that word. Say Look, this is your saddest thing. That’s all. Your

*asked on February 24, 2018* -
## Algebra and Geometry

Hi I have a question about my homework but my teacher doesn't explain to us very well so if someone can help me out.. iw ould appreciate it. Thank you. Find the quotient and remainder for x^5-x^4+7x^3-7x^2+5x-10/ x-1 thank you so much (:

*asked on February 16, 2018* -
## math

What is the base 7 representation of the number 275? 21201 is the base 3 representation of what number? I'm having trouble with both questions. Can someone help me out? I tried using the internet but I was still confused.

*asked on January 31, 2018* -
## Please Help Mc one question

Which of the following is not considered part of the "golden age" of microbiology? A.First artificial vaccine is developed B.Gram stain is devised C, Viruses are defined D.all of the above Please do not guess I chose C but i think it was wrong

*asked on January 9, 2018* -
## MC science history

Which of the following is not considered part of the "golden age" of microbiology? A.First artificial vaccine is developed B.Gram stain is devised C, Viruses are defined D.all of the above Who determined Archaea are the third domain of life? A.Carl Woese

*asked on January 9, 2018* -
## History

Why were the bill of rights known as dangerous?

*asked on January 4, 2018* -
## History

What does the constitution have to do with the concepts of rights, federalism, and division of powers?

*asked on January 3, 2018* -
## History

What is the concept of rights and how does the constitution and bill of rights treat it?

*asked on December 31, 2017* -
## Literature

I am doing a collage about Fahrenheit 451 and basically we have to make a collage with chunks of writing about quotes that relates back to our proposal. Would It be okay if someone looked at it? Proposal: I am interested in how the government doesn’t

*asked on December 31, 2017* -
## Literature

What is another way the government in Fahrenheit 451 is not giving people choice or freedom other than not being able to read books.

*asked on December 30, 2017* -
## Algebra and Geometry

Can someone xplain what the golden ratio is and how we know that it MUST be irrational. What does this tell us about our Penrose tilings?

*asked on December 21, 2017* -
## Literature

I just have a stupid question.. Does the phoenix in Fahrenheit 451 symbolize any type of freedom? Because I searched online, but it mostly says rebirth. But could it?

*asked on December 20, 2017* -
## Theater

I have to write a short silent play and I'm having trouble coming up with ideas. Can someone help? Its suppose to be in this format. 1. reveal information 2. raise the stakes somehow 3. have the character do something irrevocable s/he cant take back 4. top

*asked on December 4, 2017* -
## math

Suppose I use a scale on my map where every 3 inches on my map represents 5 miles. If a region on my map has an area of 45 square inches, what is the area of the actual region it represents? hi I need help with this question, I don't know what to do.

*asked on November 29, 2017* -
## Algebra and Geometey

Let v be the vector and let w be the vector . What is ||v||? Can someone help me, I am having trouble with the question. Thank you!

*asked on November 8, 2017* -
## history

What is the Columbian Exchange and how was it positive advantage?

*asked on October 31, 2017* -
## Math

Triangle ABC has the side of lengths of 6,8,9. HGI is similar to ABC which has the side length of 12, 8, and its missing one length. What is the missing number. Can someone explain how to find that number.

*asked on October 25, 2017* -
## Literature

Self-Interview "I have always understood that's why I have been so frequently called 'a revolutionist.' It sounds as I have done some crime! Well, it may be the American black man does need to become involved in a real

*asked on October 17, 2017* -
## Literature

Self-Interview "I have always understood that's why I have been so frequently called 'a revolutionist.' It sounds as I have done some crime! Well, it may be the American black man does need to become involved in a real

*asked on October 17, 2017* -
## Literature

"I have always understood that's why I have been so frequently called 'a revolutionist.' It sounds as I have done some crime! Well, it may be the American black man does need to become involved in a real revolution. The word for " revolution" in German is

*asked on October 15, 2017* -
## Algebra and Geometey

Hi can someone explain what is meant by the inverse of a transformation

*asked on October 12, 2017* -
## history

I have an essay about symbolic occupation, but first I am suppose to know how did religion shape symbolic occupation but the text we have is very complicated to understand.

*asked on October 10, 2017* -
## history

I have an essay about J.H Elliott and I have to write about his arguments he made about symbolic occupation. Can someone help me what was his arguments.

*asked on October 9, 2017* -
## AP Stats

Bolivian adult females are much shorter than US females although the standard deviation of their heights is about the same at 2.3 inches. Only 4.1% of Bolivian females are at least five feet tall. What is the mean height of adult Bolivian women assuming

*asked on September 25, 2017* -
## English

Why does Yoni think the Arab he finds is perfect for his film? It was in Bethlehem, actually, that Yonatan found his Arab, a handsome man who used his first wish for peace. His name was Munir; he was fat with a big white mustache. Superphotogenic. It was

*asked on September 9, 2017* -
## Englsih 10

Write a paragraph that answers the questions below. Include two supporting details or examples. In the literature of Americas, Kimberly Koza writes by discovering the literature of our neighbors we may also learn about ourselves. Keeping this quote in

*asked on August 23, 2017* -
## Math: equations

Samantha has triple the number of braclets as Ruth. Ruth has x braclets. All together, they have 48 braclets. Find the value of x.

*asked on March 16, 2017* -
## Math Statistics

"In the United Kingdom's Lotto game, a player picks six numbers from 1 to 49 fir each ticket. Rosemary brought one ticket for herself and one for each of her four adult children. She had the lottery ticket. When the sic winning numbers were drawn, Rosemary

*asked on February 7, 2017* -
## Physics

A car is backing up at a rate of 10km/hr. If the driver looks through his rear-view mirror, how fast does a tree, which is behind him, appear to approach him?

*asked on October 27, 2016* -
## SS

How is the number of Electoral College seats per state determined? (1 point) by the number of party delegates assigned to the state by the total number of House and Senate representatives by the traditional number assigned under the 12th Amendment by

*asked on October 5, 2016* -
## Science

If a ball is thrown upward on Mars with an initial velocity of 10.0 m/s and lands 1.50 m below its launch point 5.54 seconds after it is thrown , what is the local acceleration due to gravity one Mars .... Plzzzzzzzzz answer it's really important I have to

*asked on September 10, 2016* -
## Physical science

To pass a slow vehicle within the length of the passing lane roger got up well over the speed limit . He then spotted a police cruiser coming around the corner and hit the brakes . If he braked at 6 m/s^2 , and it took him 1.50 seconds to get back to 40

*asked on September 10, 2016* -
## Algebra

True or false? Negative numbers are closed under addition. Give a counterexample True or false? Prime numbers are closed under subtraction. Give a counterexample True or false? Natural numbers are closed under division. Give a counterexample

*asked on August 15, 2016* -
## math

So i was going over a problem that i didn't understand which is What is the slope of the function described in the table below? x I y 0 | -3 2 | -2 4 | -1 6 | 0 the choices were f) -3 g) 1/2 h) 2 J) 3 i know that the answer is g because my family told me

*asked on August 12, 2016* -
## Ela

I need an article that's local (new york city) and it has to have at least 1000 words and published in a major newspaper. Can someone help me find an article?

*asked on August 9, 2016* -
## Math

Which of the following is equivalent to the expression 8 to the -5 power times 8 to the second power A) 1/8 to the 7 power B) 1/8 to the 3 power C) 8 to the 3 power D) 8 to the 7 power I was in between b and c but im pretty sure its c is it?

*asked on August 8, 2016* -
## Chemistry

How much solid ammonium chloride would be needed to make 100 mL of a 0.5M solution?

*asked on May 18, 2016* -
## Language Arts

Which of the following sentences contains a dependent clause? a) my mother, who never wastes anything, rinsed and saved the take-out boxes b) we were running late and, we had to skip stopping by the post office. c) I had never been to New York before this

*asked on March 10, 2016* -
## Language Arts

Which of the following sentences contains a dependent clause? a) my mother, who never wastes anything, rinsed and saved the take-out boxes b) we were running late and, we had to skip stopping by the post office. c) I had never been to New York before this

*asked on March 10, 2016* -
## Algebra 1

1. A company is deciding whether or not to hire a new worker. The company must pay the worker hourly and cover a daily cost for insurance. The cost to pay an hourly worker for one day is represented by the function y = 8x + 25, where x is hours. What is

*asked on March 8, 2016* -
## Language Arts

What is the pattern of stressed and unstressed syllables in this line: The sun should drop its greatest gold

*asked on March 2, 2016* -
## math

The classroom has 4 desk each row. there are 5 rows. how many desk are there in the classroom.

*asked on January 7, 2016* -
## Math

Which statement is true? A. Every rational number is a square root. B. Every irrational number is a fraction. C. Every rational number can be written as a fraction. D. Every square root can be written as a whole number I go with C

*asked on November 12, 2015* -
## chemistry

How many grams of lithium hydroxide are needed to remove 920 g of carbon dioxide in the air

*asked on August 27, 2015* -
## math

At a popcorn factory, for every kilogram of popcorn that is popped, 100 grams are not popped. The factory pops 5 kilograms every day. What is the total weight in kilograms, of the unpopped corn in the month of april?

*asked on August 20, 2015* -
## chemistry

please help !!! You are given an organic solid which reacts with most organic solvents. How would you obtain the IR spectrum of it?

*asked on April 26, 2015* -
## AP Chemestry

The question is as follows: went wrong, I'd really appreciate it!

*asked on April 21, 2015* -
## physics 1

444g mass vibrates according to the equation x = 0.348 sin (5.82 t) where x is in meters and t is in seconds. Determine the total energy. Determine the kinetic energy when x is 14.0cm. Determine the potential energy when x is 14.0cm.

*asked on December 13, 2014* -
## physics 1

Two isolated masses, M1 = 2.20 kg and M2 = 589 kg are initially rest, a distance d= 161 cm apart. Their gravitational attraction is the only force acting. Calculate the time it takes for M1 to move from that distance to 159 cm from M2. Assume that M2 does

*asked on December 12, 2014* -
## Physics

A bullet of mass m= 2.50×10-2kg is fired along an incline and imbeds itself quickly into a block of wood of mass M= 1.60kg. The block and bullet then slide up the incline, assumed frictionless, and rise a height H= 1.45m before stopping. Calculate the

*asked on December 12, 2014* -
## Chemsitry

What courses should you take in each grade 9,10,11,12 to help you become a pharmacologist. i need courses for each grade

*asked on December 11, 2014* -
## Biology

what is the vascular system of the lilac flower. i tried finding some sites. some sites would help me. PLease!

*asked on December 5, 2014* -
## biology

Describe the vascular system and functions of each component of the Lilac flower i tried to find some sites, but i cant find in any. So any sites would help as well

*asked on December 3, 2014* -
## Please help Damon

need help on a lab here are the results Mass of empty beaker and glass rod(62.62) Mass of beaker, glass rod, hydrated copper sulfate(66.02) Mass of beaker, glass rod and anhydrous copper sulfate(65.04) Mass of hydrated copper sulfate(3.4) Mass of anhydrous

*asked on December 1, 2014* -
## Chemistry 11

So I did a lab determining the chemical formula of a hydrate. We had to find the molecular formula of a hydrate of copper (2) sulphate, CuSO4 .xH2O. My observation table looks like this: Mass of clean, dry test tube: 21.6g Mass of test tube + hydrated

*asked on November 18, 2014* -
## Chem 11

So I did a lab determining the chemical formula of a hydrate. I really just need somebody to check this over for me. We had to find the molecular formula of a hydrate of copper (2) sulphate, CuSO4 .xH2O. My observation table looks like this: Mass of clean,

*asked on November 18, 2014* -
## physics

If each of the three rotor helicopter blades is L = 3.69m long and has a mass of m = 159kg, calculate the moment of inertia of the three rotor blades about the axis of rotation.

*asked on November 11, 2014* -
## physics

The distance between a hydrogen atom (m = 1.0u) and a chloride atom (m = 35.5u) in the HCl molecule is 1.27×10-10m. How far from the hydrogen atom is the center of mass of the molecule?

*asked on November 11, 2014* -
## Chemistry

A generic solid, X, has a molar mass of 77.7 g/mol. In a constant-pressure calorimeter, 31.2 g of X is dissolved in 289 g of water at 23.00 °C. The temperature of the resulting solution rises to 24.40 °C. Assume the solution has the same specific heat as

*asked on November 2, 2014* -
## physics

Displacement vectors A,B,and C add up to a total of zero. Vector A has a magnitude of 1550 m and a direction of 24.1° north of east. Vector B has a direction of 41.0° east of south, and vector C has a direction of 33.4° north of west. Find the

*asked on October 30, 2014* -
## HEALTH

The heart is a _____ that provides the force necessary to circulate the blood to all the tissues in the body. A. Skeletal pump B. Autonomous pump C. Muscular pump D. Systemic pump My answer would be C. i think that's right...

*asked on October 8, 2014* -
## physics

What is the acceleration of a car going from 3.0 x 101 km/hr to 1.20 x 102 km/hr in 3.0 x 101 sec?

*asked on October 3, 2014* -
## Aviation #2

what accident investigation / forensic methods are used in aviation?

*asked on August 25, 2014* -
## Aviation

What procedures and / or methods are recognized within the Aviation industry?

*asked on August 25, 2014* -
## Investigation Domain Contexts

What procedures and methods are prescribed/recommended in the Aviation domain?

*asked on August 25, 2014* -
## science

Air pressure at the surface of a fresh water lake near sea level is about 10^5 N/m2. At approximately what depth below the surface does a diver experience a pressure of 3.0 e5 N/m2?

*asked on July 1, 2014* -
## Math

Kaylee got a 15% raise. She now earns $23 an hour. How much did she earn before the raise?

*asked on April 12, 2014* -
## Math

What is the maximum value of the function y= 18/x^2-9 over the interval -3

*asked on March 30, 2014* -
## Science

Which statement summarizes water quality issues in China

*asked on March 24, 2014* -
## Chemisty

a)What is the [Ca2+] when 100mL of .05M CaCl2 is added to 100mL of .10M K2SO4? b) What is the [SO42-] for part a? c) write the Ksp expression for CaSO4 d)Will a precipitate form in the solution from part a)?

*asked on March 20, 2014* -
## Math

What is 3/8=4m-2 over _____ 12

*asked on March 20, 2014* -
## history

During the 1950s, the advent of _______ created the largest and fastest-growing impact on American society. A. television. B. suburban communities C. educational reform D. fundamentalist religion. I think it's D. Am I correct?

*asked on March 6, 2014* -
## Math

Tiffany bought 2/5 kg of cherries. Linda bought 1/10 kg of cherries less than Tiffany. How many kg of cherries did they buy altogether?

*asked on January 22, 2014* -
## Math

Express fraction 9/4 as the sum of two or three equal parts. Rewrite the problem as a multiplication equation.

*asked on January 9, 2014* -
## algebra 1

parallel and perpendicular lines write the slope-intercept for an equation of the line that passes through the given point and is perpendicular to the graph of each equation (4-2) y=1/2 +1, ( 2,-3) y= -2/3+4 (-8,-7) y=-x-8 (6,-2) y=-3x-6

*asked on January 9, 2014* -
## Chemistry

A reaction: A(aq) + B(aq) C(aq) has a standard free-energy change of –4.65 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively?

*asked on November 24, 2013* -
## Chemistry

Silver chromate is sparingly soluble in aqueous solutions. The Ksp of Ag2CrO4 is 1.12× 10–12. What is the solubility (in mol/L) of silver chromate in 1.4 M potassium chromate aqueous solution? In 1.4 M silver nitrate aqueous solution? In pure water?

*asked on November 12, 2013* -
## Chemistry

The Ksp of CaSO4 is 4.93× 10–5. Calculate the solubility (in g/L) of CaSO4(s) in 0.300 M Na2SO4(aq) at 25 °C

*asked on November 12, 2013* -
## human resource

The company has seven department stores in your city. One of your biggest problems is adequately training new salesclerks. 1. Design a three-day orientation/training program for new salesclerks. to be used. 2. Specify what methods could be used to evaluate

*asked on October 15, 2013* -
## Need Help with Math?

1. Translate P(4,0) right 3 units and up 5 units. Give the coordinates of the image point. (-5,1) (1,-5) (5,7) (7,5) 2. Point A(6, -2) is reflected over the x-axis. Write the coordinates of A'. 6,2 6,-2 -6,2 -6,-2

*asked on October 11, 2013* -
## Chemistry

Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) -----> PCl3 (g)+ Cl2(g) Kc= 1.80 at 250 degrees C A 0.206 mol sample of PCl5(g) is injected into an empty 3.30 L reaction vessel held at 250 °C. Calculate the concentrations of

*asked on September 30, 2013* -
## Math

Shelly compared the number of oak trees to the number of maple trees as part of a study about hardwood trees in a woodlot. She counted 9 maple trees to every 5 oak trees. Later in the year there was a bug problem and many trees died. New trees were planted

*asked on September 19, 2013* -
## Math Help? Check my answers.

Simplify 6 x 3 divide 3 - 1. Pre-Algebra? Answers: 2 3 5 6 My answer: 5

*asked on August 20, 2013* -
## psychology

Nelda is fearful of public places and has managed to stay "at home" for the last three years. She and her therapist have developed a strategy. During the first week, she will go to the front door and open it and look outside. If she can remain calm, the

*asked on July 25, 2013* -
## psychology

26. Emily and her mother have entered a new place. There are toys on the floor to play with, but no one else is in the room. After a few months on her mothers lap, Emily begins to move toward the toys and is soon playing happily while her mother reads a

*asked on July 25, 2013* -
## psychology

25. Teenage mothers who are accustomed to existing on hamburgers, French fries, and Cokes need to consider the nutritional needs of the child. Research has shown that a poor diet can _______________. A. restrict the development of eye and hair

*asked on July 25, 2013* -
## Psychology

19. If Paul and Rita are exposed to erotic photographs of the opposite sex, it can be expected that _______________. A. Rita will report significantly less arousal than Paul B. Paul will report significantly less arousal than Rita C. the

*asked on July 25, 2013* -
## psychology

15. Maria is a Hispanic female, Natasha is a Black female, and Joan is a White female. Each has a high school level education but no work . Statistics show that .. A. Natasha will earn less than Maria B. Joan will earn less than Natasha

*asked on July 25, 2013* -
## Psychology

16. Greg and Lydia have been married three years. Both hold executive positions in large corporations and are well respected in their fields. Last January, they were thrilled with the arrival of their first child. Lydia returned to her same position after

*asked on July 25, 2013*