# sabrina

Popular questions and responses by sabrina-
## Chemistry

A 10.0g sample of H2O(l) at 23.0degrees C absorbs 209 joules of heat. What is the final temp of the H2O(l) sample?

*asked on January 19, 2016* -
## elmentary math for educators

Suppose B is proper subset of C. If n(c)=8, what is the maximum number of elements n B? What is the least possible number of elements B?

*asked on August 8, 2009* -
## statistics

A person can order a new car with a choice of 9 possible colors, with or without ac, with or without heated seats, with it without anti lock breaks, with or without power windows and with or without a CD player. How many different ways can a new car be

*asked on March 25, 2012* -
## English

1. Both Walt Whitman and Emily Dickinson were influenced by the Romantics. Choose one of the two poets. Provide at least three ways that he or she reflects Romantic thinking in his or her writing. Then give an example from one of the works that you studied

*asked on November 6, 2014* -
## The Power of Media

#1. Which of the following is an example of a print medium? a) a blog b) a newspaper c) a magazine’s website d) all of the above ******* #2. Which of the following is an example of a public service announcement, or PSA? a) a commercial advertising an

*asked on February 25, 2014* -
## Social Studies

How long ago was 1000 C.E. ? You would find the answer by A. Subtracting 1000 C.E. from the present year B. Adding 1000 C.E. to the present year Thank you.

*asked on September 9, 2015* -
## designer

i need someone to check my answers. i know that i got alot wrong but please no harsh comments. thank you. my answers are at the bottom. Ms. Troy would like you to make a copy of an outfit that she owns and really likes—a sleeveless dress with a

*asked on September 4, 2010* -
## Trig math

how to split up using sum and difference identities cos (13pi/12) PLeaseeeeeeeeeee help!!! thanx a million

*asked on November 17, 2010* -
## English

what is the theme of the poem two bodies ? Whats the theme of this poem? Two bodies face to face are at times two waves and night is an ocean Two bodies face to face are at time two stones and night a desert Two bodies face to face are at times two roots

*asked on August 28, 2017* -
## Physics

The figure shows a pV diagram of a gas for a complete cycle. During part bc of the cycle, 1190 J of heat flows into a system, and at the same time the system expands against a constant external pressure of 7.00 × 104 Pa as its volume increases from 0.0200

*asked on November 28, 2016* -
## Math ~ Check Answers ~

A system of linear equations is shown below. 5X = 3y - 2 y = X + 4 What is the x -coordinate of the solution? a.) 2 b.) 4 ***** c.) 5 d.) 1 Jean needs to graph the function below. y = 7x ^2 + 8x -6 How many times should the graph of this function intersect

*asked on February 19, 2014* -
## Biology

Diagram the genotypes of the P1 pea plants from the previous four questions by placing the correct answer on its correct place.

*asked on August 12, 2014* -
## Chemistry

Calculate the volume of 1.0 M copper(II) sulfate solution required to completely react with 1.0 g of Fe(s) according to this equation: 2 Fe(s) + 3 Cu^2+ (aq) --> 2 Fe^3+ (aq) + 3 Cu (s). the copper in the reactant has a charge of 2+ and the iron in the

*asked on March 5, 2013* -
## chemistry

The radius of a aluminum atom is 143 pm. How many aluminum atoms would have to be laid side by side to span a distance of 4.90 mm?

*asked on September 21, 2013* -
## math

Using Torricelli's Principle, it can be shown that the depth d of a liquid in a bottle with a hole of area 0.5 cm2 in its side can be approximated by d = 0.0034t2 − 0.52518t + 20, where t is the time since a stopper was removed from the hole. When will

*asked on July 12, 2011* -
## math

How many triangles can be made if one angle is 95° and another angle is obtuse?

*asked on April 15, 2020* -
## math

operations management •• 12.51 Cynthia Knott’s oyster bar buys fresh Louisiana oysters for $5 per pound and sells them for $9 per pound. Any oysters not sold that day are sold to her cousin, who has a nearby grocery store, for $2 per pound. Cynthia

*asked on April 29, 2019* -
## chemistry

For the decomposition of gaseous dinitrogen pentoxide (shownbelow), 2 N2O5(g).....> 4NO2(g) + O2(g) the rate constant is k = 2.8 10-3 s-1 at 60°C. The initial concentration of N2O5 is 1.52 mol/L. (a) What is [N2O5] after 5.00 min? _____mol/L (b) What

*asked on September 13, 2015* -
## pre-cal

find the length of side b ABC to the nearest whole number if A = 42, B = 87, and a = 24

*asked on August 18, 2015* -
## Math

A basket with 12 apples has a mass of 3105 grams. The same basket with 7 apples has a mass of 1980 grams. Each apple has the same mass. What is the mass of the basket?

*asked on November 20, 2014* -
## physic

4. If the same two dust particles have -1.0 x 10-10 C of charge on one, and +3.2 C x 10-10 C on the other, what is the force between them now? If the force is pushing them apart, show it as a positive number and if it is attracting them together, show it

*asked on January 21, 2011* -
## Math 117

The width of a rectangle is 1 ft. less than the length. The area is 12ft.^2. Find the length and width.

*asked on September 19, 2010* -
## English

The author of “HipHop Planet” uses the image of the candy box with a ribbon tied around it to describe the highways of Dayton, Ohio because A. it shows that not everyone can make it as a full-time rapper B. it shows how popular hip-hop music was in

*asked on December 10, 2018* -
## OPTICS/PHYSICS-REALLY DO NOT UNDERSTAND THIS!

A POINT SOURCE OF LIGHT IS PLACED 50 CM ABOVE A CIRCULAR CARD OF DIAMETER 5CM, THE SOURCE BEING DIRECTLY ABOVE THE CENTRE OF THE CARD. WHAT IS THE AREA OF THE SHADOW ON THE FLOOR 70 CM BELOW THE CARD?

*asked on August 27, 2012* -
## Math

Esme is thinking of two integers. One integer is 4 times the other, and their sum is 18 more than 3 times the smaller I integer. What is the smaller integer esme is thinking of?

*asked on November 11, 2016* -
## chemistry

For the decompostion of gaseous dinitrogen pentaoxide, 2N2O5(g)--->4NO2(g) +O2(g) . The rate constant is k=2.8 x 10^-3 at 60 degrees C. The initial concentration of N2O5 is 2.45 mol/L. What is (N2o5) after 5.00 min? What fraction of the N2o5 has decomposed

*asked on September 14, 2014* -
## Algebra 1

A college student is looking at her monthly checking account records. On September 1, 2008, her checking account held a balance of $1,050. At the end of March 2009, her checking account held a balance of $800. What is the monthly rate of change for the

*asked on August 21, 2014* -
## Chemistry

What is the compound formula for Cation: Na+ and Anion: CN-

*asked on September 29, 2013* -
## math

1.) $850 plus 8% on sales of $8,000 2.) $1,200 plus 4.5% on sales of $6,500 3.) You purchase 9 1/2 yards of fabric at $11.00 per yard. If there is a 7% salesb tax, what is the total cost of the fabric

*asked on February 26, 2013* -
## chemistry

How many electrons are in the outermost principal energy level of an atom of nitrogen in the ground state?

*asked on September 25, 2012* -
## Math😒

How do you find the answer to 3.4 - 0.972

*asked on April 26, 2012* -
## math

Two parallel lines cut by a transversal can create all the following types of angles except

*asked on January 3, 2010* -
## math

For g(t)= 3t - 2 determine the value when g(13). I am not sure how to solve this.

*asked on February 10, 2009* -
## science

Rutherford used his gold foil experiment as evidence for a new atomic model. He suggested that the atom contained a small positively charged nulceus surrounded by a large void filled with only a few electrons orbiting the nucleus. What other experiment or

*asked on December 15, 2019* -
## math

A painter needs to purchase enough paint to paint a bedroom that consists of four walls. Two of the walls are 11 feet by 10 feet and the other two walls are 12 feet by 10 feet. The paint is sold in 1 gallon cans, and each gallon of paint will cover an area

*asked on September 6, 2019* -
## Math

A field hockey tournament is to be held in Yellowknife, NWT. According to regulations, the field is 25 yds by 100yds. For officials, support group and team members, a uniform rectangular strip of manicured lawn is to be installed by a local business group.

*asked on January 24, 2017* -
## Social Studies

I need to know how New England Colonies,Middle Colonies, and Southern Colonies the ways the colonists adapted to their environment.

*asked on November 16, 2016* -
## Social Studies

I need 3 examples of characteristics about the New England Colonies, Middle Colonies, and Southern Colones

*asked on November 16, 2016* -
## Algebra

If anyone can check my work for me that would be greatly appreciated I'm having trouble. Evaluate the expression foe the given value of the variable. |-4b-8|+|-1-b^2|+2b^3 ; b=-2 I got 1 for my answer -4(-2)-8-1+2^2+2(-2) 8-8-1+2^2-4 -1+2^2-4 1

*asked on November 16, 2016* -
## Algebra

Which of the following is equal to (3X/5-7)+7 I used the slash mark to represent the fraction symbol. Can someone please help me figure this out? A.) 5X/3 B.) 3X/5 C.) 3X-35/5 D.) (3X-7)+35

*asked on November 16, 2016* -
## Chemistry

What is the yield of the synthesis of ammonia to 400° C and 500 atm of pressure?

*asked on April 9, 2016* -
## Chemistry

A saline solution with a mass of 400 g has 30 g of NaCl dissolved in it. What is the mass/mass percent concentration of the solution?

*asked on April 7, 2016* -
## Statistics

The Phillies were accused of cheating their beer customers by not putting enough beer in their 12 oz cups. When 15 cups were selected at random, they were found to have a mean of 11.7 ounces with a standard deviation of 0.5 ounces. At the .01 significance

*asked on July 27, 2015* -
## chemistry

a pool is 39.8 m long and 28.2 m wide. if the average depth of water is 4.90 ft, what is the mass (in kg) of water in the pool? enter your answer in scientific notation. the density of water is 1.0 g/mL

*asked on February 4, 2015* -
## math

James needs to bring his grade up to a B (80) in reading. What does he need to get on his next quiz? Quiz 1:77 Quiz 2:81 Quiz 3:74 Quiz 4:?

*asked on January 19, 2015* -
## General Chemistry

We mix 112 grams of oxygen gas with 118 grams of argon gas in a volume of 1752 mL at 74 degrees celsius. What will be the final pressure of the gas mixture? First, I converted the grams into moles. 112g O2 * (1mol O2/ 32g O2) = 3.5 moles O2 118g Ar * (1mol

*asked on October 26, 2014* -
## Physics HELP

Two blocks having mass m1 = 6 kg(m1 on ramp of 30 degrees) and m2 =3 kg are connected by a light rope and slide on a frictionless surface as in the figure below. A force F = 10 N acts on m2 at 20 degrees relative the horizontal. Find the acceleration of

*asked on October 7, 2014* -
## Math

Find lim h->0 [f(2+h)-f(2)]/h where f(x)=|x-5|-7

*asked on October 2, 2014* -
## cyber-bullying

Charles sends Julia text messages every morning insulting her appearance and threatening to hurt her. He writes unflattering description of her on blog and on his own personal website a. identity theft b. cyberstalking c. online arguing d. cyberbullying

*asked on February 13, 2014* -
## Physics

Consider two straight conductors of length 0.9m, carrying current of 19.9A and 12A respectively. If they are placed 0.3m apart, what is the value 10^6 ×F, where F is the magnitude of the force (in N) between these two conductors. Express the answer with

*asked on October 24, 2013* -
## chemistry

Which of the following is not an example of a science? geology astronomy astrology ecology

*asked on February 10, 2013* -
## Science

Sarah heated two cubes of aluminum to 50 degrees celsius. Cube B has a volume of two cubic centimeters. If the cubes do not touch each other, which of these statements is true? A. Cube A has a higher temperature than cube B. B. Cube B has a higher

*asked on February 5, 2013* -
## CHEMISTRY

Ethylamine, CH3CH2NH2, is an organic base with pKb = 3.367 at 298 K. In an experiment, a 40.0 mL sample of 0.105 mol L-1 CH3CH2NH2 (aq) is titrated with 0.150 mol L-1 HI(aq) solution at 298 K. (a) Write a balanced chemical equation for the neutralization

*asked on November 27, 2012* -
## advanced algebra

ms. driva reck drove from her home to a service station at 48 km/h. she returned home by bike at 16 km/h. the entire trip took 4 hours. How far was the service station from ms. reck's home?

*asked on October 4, 2012* -
## chemistry

Which of the following elements is synthetic? uranium iodine helium nobelium

*asked on September 25, 2012* -
## math

a map of the moon has a scale of 1cm:25km. On this map the diameter of the Copernicus crater is about 3.7 cm. To the nearest kilometer, what is the actual diameter of the crater?

*asked on February 8, 2012* -
## Grade 12 Biology

If a life-form has six different bases-ABCDEFG. the percentage composition of A,B and C is same as EFG. Hypothesis the structure of the nucleic acid. I TRIED the search engine but didn't help, please help!

*asked on May 9, 2011* -
## Grade 12 Bio Please try to help me

If a life-form has six different bases-ABCDEFG. the percentage composition of A,B and C is same as EFG. Hypothesis the structure of the nucleic acid.

*asked on May 9, 2011* -
## Physical Science

Who discovered Respiration?..Ever single time i google it, it comes up as cellular respiration..i need breathing respiration..please help me!!!!! ~;D~

*asked on February 1, 2011* -
## PLEASE HELP!!!!

if log6=m and log 5=n, write 7.2 as an expression in m and n Answer is 2m-n Please help me!!

*asked on January 20, 2011* -
## math trig identities

a)cos4x-sin4xcot2x=-1 b)1+sinx+cosx/1+sinx-cosx=cot(x/2) i tried to ask my teacher but she doesnt know please help me!

*asked on January 20, 2011* -
## English

what is the difference between SEQUENTIAL POEMS and NARRATIVE POEMS ..please could you give explanation and not a website link thanks :)

*asked on November 24, 2010* -
## english

how does the structure of the poem affect the meaning of the poem..or contribute to the poem THank u soo much :)

*asked on November 24, 2010* -
## Math I have tried it and tried it

I have tried several times to find the vertex, line of symmetry, max/min value of the quadratic function. f(x)=-2x+2x+8 I know I have to do completing the square to answer this but everytime i try to follow the steps I stumble hard! a(x-h)^2+k x= -b/2a

*asked on September 24, 2010* -
## English

is Polonius a good advisor to the king in Hamlet? please help me, its for a essay, your help is greatly appreciated. THank you!!

*asked on September 24, 2010* -
## Math

The problem to solve is: (x+20)(x-12)(x+4)>0 but I can't figure out how to do this right so I left off the >0 and tried to solve the equation. x+20 evaluates to x+20 x-12 evaluates to x-12 Multiplying x+20 by x-12 is a classic Algebra problem. Here, you

*asked on September 24, 2010* -
## Geography

If D is the midpoint of AC and C is the midpoint of AB and AD=3cm what is the length of AB

*asked on September 9, 2010* -
## 5th Grade Math

0.38 = (3 X 0.1) + ( X ) My sons paper instructs us to fill in the missing values. We understand that we are to fill in the two values in the second set of parenthesis, but that is all we understand. Please help...I feel so inadequate because I can't help

*asked on September 7, 2010* -
## math

How many integers values of x are there so that x, 5, and 8 could be the lengths of the sides of a triangle?

*asked on January 3, 2010* -
## Elementary Math for Educator

Suppose C is a subset of D and D is a Subset of C. If n(c)=5,find n(D) what other relationship exists between C and D

*asked on August 8, 2009* -
## Biology

Hi I am doing a fetal pig dissection and i need some help answering questions. Should partially digested food be present in the stomach or small intestine of the fetal pig? Explain. What is the importance of the rich bloof supply surrounding the small

*asked on June 11, 2009* -
## MATH PLEASE HELP

The Sorry State Lottery requires you to select 7 different numbers from 0 through 55. (Order is not important.) You are a Big Winner if the 7 numbers you select agree with those in the drawing, and you are a Small-Fry Winner if 6 of your 7 numbers agree

*asked on April 22, 2009* -
## College Math

Suzy has a bag containing 5 red marbles, 2 green ones, 4 white ones, and 3 purple ones. She grabs 9 of them. Find the probability that she does not have all the green ones. Express the answer as a fraction in lowest terms.

*asked on April 21, 2009* -
## College MATH

According to the New York Times/CBS poll of March, 2005, 87% agreed that it should be the government's responsibility to provide a decent standard of living for the elderly, and 54% agreed that it would be a good idea to invest part of their Social

*asked on April 13, 2009* -
## bio

Assignment: Photosynthesis and Cellular Respiration Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, single-celled or multi-cellular, the exchange of energy and the formation of products consist of a

*asked on April 12, 2009* -
## Chemistry

Could you help me with this question: A molecule of chloroform, CHCl3, has the same shape as a molecule of methane CH4. However, methane's boiling point is -164 degrees celcius ans chloroform's boiling point is 62 degrees celcius. Explain the difference

*asked on March 2, 2009* -
## Chemistry

What is the balanced chemical equation for the reaction of potassium with oxygen? would it be: K + 0 --> K20 I am not sure can you help me?

*asked on February 9, 2009* -
## math, pre- statistics

Hospital records indicated that maternity patients stayed in the hospital for a number of days shown in the distribution Days Stayed Frequency 1 34 2 23 3 17 4 11 5 8 If a patient's records are selected calculate the probability of each event. A patient

*asked on February 6, 2009* -
## science

what do consumers and decomposers do to the carbon cycle?

*asked on September 16, 2008* -
## physics

an 800 N person stands on a scale in an elevator. What is his apparent weight when the elevator is accelerating upward at 2 m/s^2? B) what5 is his apparent weight when the elevator is acc. downward at 2m/s^2? c) what is his apparent weight when the

*asked on February 20, 2007* -
## Physics

The tension on a string from which a 5.00kg object is suspended in an elevator is T=(44.0j)N. What is the acceleration of the elevator? Specify the acceleration in unit vector notation. T - Mg = M a with positive force upward. a = T/m - g = 8.8 - 9.8 =

*asked on February 20, 2007* -
## Science

what are three things that are unique to hydraulic systems three things that are unique to pneumatic systems and three things that are part of both systems?

*asked on May 20, 2020* -
## math

what is greater? 0.565656565656 or 0.5666666666666

*asked on May 8, 2020* -
## Math

which is greater? 0.2 or 0.2222222222222222222222

*asked on May 8, 2020* -
## Environmental Science

1. What characteristics can make a population shrink or grow over time? 2. How can age structure diagrams be used to predict the future populations?

*asked on April 7, 2020* -
## Calculus

Reimann sums approximate the area of an integral using what?

*asked on March 31, 2020* -
## English

10 letters 2 words first word has 6 letters and second word has 4 letters. The letters are OTBRETOAMA

*asked on August 7, 2019* -
## Chemistry

Suppose 10.2 G of copper a state is dissolved in 350 mL of a 3-0 molality solution of sodium chromate calculate the final molarity of copper assume the volume stays constant

*asked on April 13, 2019* -
## Math

How do I write an quadratic equation whose roots are -2 and 6 and whose leading coefficient is 2

*asked on September 23, 2018* -
## Math

if the hands on a round clock moved counter clockwise, to what number would the minute hand point 20 minutes before the hour hand pointed to 3? a. 4 b. 7 c. 8 d. 11 is 8 the correct answer?

*asked on August 7, 2018* -
## Geometry

Find the cost of sod, at $0.49 per square foot, for a playing field that has a semi circle on each end with the radius of 8ft. Show work. Answer: $325.83

*asked on March 12, 2018* -
## math

Marie bought 5 yards of material to make doll clothes. this costs $8.90. what is the cost of 1 yard of material?

*asked on January 30, 2018* -
## mathmatics

4. Annie finds another bank, Star Bank, that offers a CD account with a 2% interest rate every month. Star Bank's interest is not compounded. The interest is based on the original amount of deposit. Remember that Annie has $500 to start the account. She

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

Two 200kg masses(440 lb) are separated by a distance of of 0.75m. Using Newtons law of gravitational force Find the magnitude of the gravitational exerted by one mass on the other.

*asked on September 26, 2017* -
## Science

What are two examples of a physical system designed by peaple

*asked on September 17, 2017* -
## chemistry

how is rubbing alcohol a homogenous mixture ??

*asked on September 7, 2017* -
## trigonometry

Filiz is walking at a bearing of 300°. When she has traveled 20 meters, how far west from her starting point is she? Round to the nearest tenth

*asked on July 27, 2017* -
## calculus

Hi, could someone please help me with this hw question asap? Given that the integral of (e^x*sin(5x))dx=((e^x)/26)*(sin(5x)-5cos(5x))+c, evaluate the integral from 1 to e^(pi/10) of sin(5ln(x))dx

*asked on May 4, 2017* -
## Math

How to get 44 using the digits in 2017. You can use +,-,×,÷,√,!,!!,exponents. Double digit numbers are allowed. You can use each digit only once.

*asked on March 26, 2017* -
## math

The first time the shuttle fires is at 7:44:35:16 on Friday morning and the next time it fires them is in the wee hours at 2:26:33:07 on Saturday morning. How much time has elapsed between one firing and the next? 7:44:35:16 means

*asked on March 26, 2017*