# J

Newest questions and responses by J-
## Chemistry

1. How do your values of and compare with literature/theoretical values? What are possible sources of any discrepancy between the experimentally determined and theoretical values of ? (The aims of this experiment are: (1) To determine the thermodynamic

*asked on October 25, 2018* -
## Math

Jerome has 1/4 of the groups video games at his house. Mario has 2/5 of the groups video games at his house. What fraction of video the groups video games is either at Jerome's house or Mario's house?

*asked on December 8, 2017* -
## chemistry

determine the number of grams of Ne gas that must be added to a container in order for the volume to increase to 38.2 L at constant pressure and temperature if the container had an initial volume of 25.0 L and 2.0 moles of Ne

*asked on December 5, 2017* -
## Government

6. Which criteria must a law meet in order to pass the government's strict scrutiny test to reasonably discriminate? 8. Which of the following actions would provide a citizen the most influence on government decision making?

*asked on November 20, 2017* -
## Us government

19. How is Snyder v Phelps an example of competing rights? Be specific in your answer. The court case of Snyder v phelps is an example of competing rights because the rights of privacy and speech are making distress and this came into conflict with the

*asked on November 18, 2017* -
## physics

A uniform metre rule of mass 90g is pivoted at the 40cm mark. If the rule is in equilibrium with an unknown mass m placed at the 10cm mark and a 72g mass at the 70cm mark,determine m.

*asked on November 11, 2017* -
## trig

secx = 4 in Q2 find sin2x,cos2x,tan2x

*asked on October 30, 2017* -
## math

A parking garage has floors above and below ground level. For a scavenger hunt, galas friends are given a list of objects they need to find on the third floor and fourth level below ground, the first and fourth above ground, and ground level. a. If ground

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

A triangular lot is 120ft on one side and has a property line of 700ft. Find the area of the lot in acres (figure not drawn to scale)

*asked on September 28, 2017* -
## Math

In Exercises 16–18, use the following information. At a college, 43% of the students are women, 15% of the students are art majors, 4% have not chosen a major, and 8% are women and art majors. A faculty member conducts an experiment and selects students

*asked on June 8, 2017* -
## biostatistics

Rheumatoid arthritis (RA) is a chronic disease that affects synovial joints. About 1% of the world population suffers from this disease. A synovial test for the presence of the anti-citrullinated protein antibodies is commonly used when rheumatoid

*asked on May 24, 2017* -
## Chemistry

I get that you're supposed to balance; however, I was confused on how to do the reduction and oxidation electron equations (the simplist way). Looked at too many examples online but nothing was clear. 1) Cu + HNO3 → Cu(NO3)2 + NO2 + H2O 2.) KMnO4 + H2SO4

*asked on May 17, 2017* -
## physical science

Which description does the phrase "mechanical advantage" most closely relate to? A. The same amount of work using less force. B. The same amount of power using less work. C. The same amount of work using less power. D. The same amount of power using less

*asked on May 2, 2017* -
## science

Recall from previous activities in this lesson which era is sometimes referred to as the Age of Mammals. Locate and click on this section of the geologic time scale, and list the other possible names that could have been used to describe this era, and why?

*asked on May 1, 2017* -
## math-precalculus

A Ferris wheel is 50 meters in diameter and boarded from a platform that is 1 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 6 minutes. How many minutes of

*asked on April 30, 2017* -
## math-precalculus

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature varies between 73 and 87 degrees during the day and the average daily temperature first occurs at 8 AM. How many hours after midnight, to two decimal

*asked on April 27, 2017* -
## Algebra

A $4,000 principal is invested in two accounts, one earning 3% interest and another earning 4% interest. If the total interest for the year is $126, then how much is invested in each account?

*asked on March 17, 2017* -
## 7th grade ss unit 1 lesson 13 test

I am stuck on the test ss 2b one the lesson 13 test Why is mining important to the economy of the Untied states? I but mineral I am so stuck on this test

*asked on March 6, 2017* -
## Science

What is methanol?

*asked on February 19, 2017* -
## math

One side of triangle is 5 more than 2 times the shortest side. The third side is 23 feet more than the shortest side. The perimeter is 72. Find all three sides.

*asked on February 10, 2017* -
## Math

The land area of Statesville, NC, is 20.5 square miles. If the entire US population (currently about 320.2 million) were put inside the city limits of Statesville, determine the number of square feet that each person would have. Round your answer to two

*asked on February 10, 2017* -
## Math

You need to buy some chicken for dinner tonight. You found an ad showing that the store across town has it on sale for $2.89 a pound, which is cheaper than your usual neighborhood store, which sells it for $2.99 a pound. Is it worth the extra drive? First,

*asked on February 10, 2017* -
## Math

A 6 inch personal pizza has 630 calories, with 240 of those from fat. A 16 inch pizza is cut into 8 slices. Estimate the number of calories in one slice of a 16 inch pizza.

*asked on February 10, 2017* -
## Math

It takes a hose 4 minutes to fill a rectangular aquarium 8 inches long, 9 inches wide, and 14 inches tall. How long will it take the same hose to fill an aquarium measuring 24 inches by 27 inches by 31 inches?

*asked on February 10, 2017* -
## French

Can you fix any grammar I may have done wrong. Help Mme! Merci beaucoup. ______________________________________ 1. In the beginning of the film, the Magesty Cordelia talked to Joliterax about how Caesar almost annihilated the British army. *** Au début du

*asked on February 4, 2017* -
## science

calculate the moles of oxygen atom in 6.2 g of calcium carbonate?

*asked on February 2, 2017* -
## math

your brother is 1/3 your age.your sister is 6 years older than your brother. your sister is 10 years old. write and solve and equation to find your age a

*asked on January 31, 2017* -
## math

If a gallon of milk costs $3.00, how many gallons could be bought with $42.00?

*asked on January 26, 2017* -
## AP Calculus

Ship A is sailing due west at 8km/hr when it sees ship B northwest of its present position. If ship B is sailing due south at 3km/hr, then how close will they come on their courses?

*asked on January 9, 2017* -
## Physics

A row of seats is parallel to a stage at a distance of 8.70 m from it. At the center and front of the stage is a diffraction horn loudspeaker that has a width of 7.50 cm. The speaker is playing a tone at a frequency of 9600 Hz . The speed of sound is 344

*asked on December 9, 2016* -
## Algebra

For questions 1-5 solve the equation. 1.-2v-7=23 (A)15 (B)8 ★ (C)-8 (D)-15 2. X/3-10=-12 (A)-6 (B)-66 (C)6 (D)66★ 3. d/3+10=7 (A)51 (B)20 ★ (C)0 (D)-9 4. 2(2-2x)=-3x (A)-4 (B)4 ★ (C)6 (D)0 5. 2.9n+1.7=3.5+2.3n (A)3 (B)-3 (C).3 (D)1 For questions

*asked on December 2, 2016* -
## Chemistry

A laboratory technician wants to determine the aspirin content of a headache pill by acid–base titration. Aspirin has a Ka of 3.0 × 10-4. The pill is dissolved in water to give a solution that is about 10-2 M and is then titrated with KOH solution. Find

*asked on November 17, 2016* -
## Chemistry

Determine the mass of NH2CH2CO2Na and the volume of 0.150 M HCl solution required to make 1.35 L of a buffer solution at pH=10.75 and at a total concentration of 0.33 M. pKa(NH2CH2CO2H)=9.88. a.Mass of NH2CH2CO2Na: b. Volume of HCl solution: Hi Im sooo

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

Give a simple test that would allow you to distinguis between the following pairs of anions. Tell what you would do and what you should observe for each anion. A. CO3^2- and SO4^2- B. Cl- and SO4- C. CO3^2- and Cl- Now, for each cation A. B^3+ and Ca2+ B.

*asked on November 15, 2016* -
## Chemistry

Use two concentration tables to calculate the concentrations of the species present in a 0.0400 M solution of CsBrO. a.[HBrO] b.[BrO-] = 0.0400M c. [H3O+] d.[OH-] hi. how would I attempt this problem. can you walk me through it or give me a hint.

*asked on November 14, 2016* -
## Chemistry

For a 0.47 M solution of LiClO compute the pH. Hi. I am confused about this question. I calculated the pH...but my answer is wrong. what am I doing wrong??? pH=-log(0.47) pH=0.33

*asked on November 13, 2016* -
## Math

The stockholders’ equity at the beginning of the period was $200,000; at the end of the period, assets were $255,000 and liabilities were $40,000. If the owner made no additional investments or paid no dividends during the period, did the business incur

*asked on November 10, 2016* -
## Health!

Statistics of Suicide regarding Antisocial Personality Disorder

*asked on October 21, 2016* -
## criminal justice

When we claim that certain moral values or principles (e.g., do not steal) apply or should apply to all people, everywhere, we are saying that some values or principles are:

*asked on October 17, 2016* -
## phyd

How long would it take for a small pebble to fall from the top of the Grand Canyon to its deepest part?

*asked on October 11, 2016* -
## Wold History

Having a hard time in World History! Please let me know if these are right and if not please tell me the answers! 1. How did the religious beliefs of the ancient Israelites differ from those of other nearby peoples? The Israelites believed in many gods,

*asked on September 22, 2016* -
## Math

Find three consecutive even integers such that the sum of the smallest and largest is 36

*asked on September 14, 2016* -
## Wold History

Which of the following most directly resulted from the Neolithic Revolution? •Populations increased. •Complex cultures blended. •Religion became less important. 2. Which of the following best describes the emergence of social classes in early

*asked on September 13, 2016* -
## math

1.8e+6 in simplest form?

*asked on September 12, 2016* -
## physics

A highway curve forms a section of a circle. A car goes around the curve. Its dashboard compass shows that the car is initially heading due east. After it travels 620. m, it is heading 30.0° south of east. Find the radius of curvature of its path.

*asked on September 7, 2016* -
## Algebra II

Let f(x) = 2x − 6. Solve f^−1(x) when x = 2. I think it is 4. f(x) = 2x - 6 y = 2x - 6 x = 2y - 6 +6 + 6 x + 6 = 2y ----- ---- 2 2 x + 6 ----- = y or f^-1(x) 2 x = 2: 2 + 6 8 ----- = --- 2 2 8 --- = 4 2

*asked on August 18, 2016* -
## hard core physics

A car is at motion.It horns an hears the echo of the sound after 6 sec.find the speed of the car.

*asked on July 27, 2016* -
## Physics

A 22 kg suitcase is being pulled with constant speed by a handle that is at an angle of 23 ∘ above the horizontal. If the normal force exerted on the suitcase is 150 N , what is the force F applied to the handle? I don't understand how the equations are

*asked on June 16, 2016* -
## Stats

A genetic experiment with peas resulted in one sample of offspring that of 421 green peas 155 yellow peas. Construct a 95% conf. Interval for yellow peas. _

*asked on May 29, 2016* -
## Language Arts

The man quickly but carefully opened the oyster’s hard shell. A. quickly B. but C. carefully D. opened I think the answer is B but i am not sure. Can you check this and explain what a conjunction exactly is. Thanks!

*asked on April 18, 2016* -
## Statistics

A card is drawn from a well shuffled deck of 52 cards. Find P (drawing an acre or a 9)

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

With what maximum speed can an unsecured passenger stay in their seat on a Ferris wheel that has a diameter of 12 m. so, this happens when Fn is zero or mg = mv^2/r. v = sqrt(gr) so is it v=sqrt9.8 what would happen with the 12m

*asked on March 23, 2016* -
## Microbiology

PLEASE HELP I AM NOT SURE WHAT THE CORRECT ANSWERS ARE: I have guessed them please let me know if they are correct. 1. The LEAST likely microbe to be used as a biological weapon would have which of the following characteristics? a. spread by insect vectors

*asked on March 21, 2016* -
## Calculus

A rectangle is inscribed in the interior section cut from the parabola x = 1/4 y2 by the line x=3. One side of the rectangle lies on the line. Fine the maximum area of such a rectangle.

*asked on March 17, 2016* -
## math and algebra

on the number line below locate and label the points the represent the rational numbers listed in part (a).Describe the relationship between these two numbers.Zero on the number line represents Isaac's balance before the mistake was made

*asked on March 4, 2016* -
## PHYSICS

a block is given an initial velocity of 3 m/s up the 22 degree plane. A.) How far up will the plane go B.) How much time elapses before it returns to its starting point. IGNORE FRICTION A) I got 1.2m B.) I got 1.6s I'm confused on this question: Both

*asked on February 24, 2016* -
## Chem

joules needed to melt 30.0 g of ice at 0 ∘C and to warm the liquid to 60.0 ∘C so i did Q=mFf which i set up like 30.g x 334 j/c = 10020 J then i'm sorta confused what i'm doing next. explain in detail please?

*asked on February 15, 2016* -
## Social Studies

How does recycling influence culture

*asked on February 7, 2016* -
## math

according to the triangle inequality, the length of the longest side of a triangle bust be less than the sum of the lengths of the other two sides. the two shortest sides of a triangle measure 3/10 and x + 1/5 and the longest measures 3/2x. write an

*asked on January 15, 2016* -
## International business

critically evaluate this statement 'an international retailers preferred market entry method directly affects its market Selection decisions

*asked on December 17, 2015* -
## math

If it takes a lawn company 5 hours to cut 6 lawns, how many yards can be cut in 12.5 hours?

*asked on December 9, 2015* -
## Child Development and Human Behavior

. Which of the following factors helps a child develop a positive self-concept? A. Material wealth B. The sex of the child C. Family relationships D. Conflicts with teachers

*asked on December 8, 2015* -
## civics

Please check my answers! 1. The Nineteenth Amendment granted women the right to vote, but women had been fighting for years for this right. Before the Nineteenth Amendment was passed, which existing amendment could women have used to argue that they should

*asked on December 2, 2015* -
## Chemistry

If you want to prepare 2.0 liters of a .25 M solution of NH4Cl, how many grams of the salt should you weigh out?

*asked on November 29, 2015* -
## Chemistry

Assume you have prepared 100.0 mL of a buffer solution using 0.400 mol of acetic acid (pKa = 4.74) and 0.400 mol of sodium acetate. The pH of this buffer solution is initially 4.74. After preparing this buffer solution, you added 55.0 mL of a 1.10 M NaOH

*asked on November 26, 2015* -
## Chemistry

A chemist needs to prepare a buffer using the carbonate system (information in the table in the previous quetion) with a final pH of 10. Which components should they mix in water to product this buffer? Question options: H2CO3 HCO3- CO32-

*asked on November 26, 2015* -
## Chemistry

A chemist needs to prepare a buffer using the carbonate system (information in the table below) with a final pH of 6. Which components should they mix in water to product this buffer? H2CO3 HCO3- CO32- pKa 6.35 10.33 N/A

*asked on November 26, 2015* -
## Chemistry

The pH of a buffer can be predicted using the Hendersen-Hasselbach equation: pH=pKa+ log([conjugate base][conjugate acid]) The choice of the conjugate acid-base pair (as you did in the previous questions) determines the pKa value to be used in the H-H

*asked on November 26, 2015* -
## Science

A 6.90-g sample of solid NiSO4·6H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C?

*asked on November 19, 2015* -
## precalc

Solve in radians. 1) sin2X = 1/2 2) tan2 (X + pi/2) = 1 3) 5 - 3sec (X - pi/4) = -1

*asked on October 27, 2015* -
## Physics

A boat moving at 5 mi/h is to cross a river in which the current is flowing at 3 mi/h. In what direction should the boat head to reach a point on the other bank of the river directly opposite the starting point?

*asked on October 7, 2015* -
## jones

What is greaterthan 40 and less than7 tens

*asked on October 5, 2015* -
## W

Some people in a hotel are dropping water balloons from their window onto the ground below. The balloons take .15s to pass your 1.6m tall window. Where should security look for the raucous guest? Express your answer using tow significant figures.

*asked on September 23, 2015* -
## Algebra

On successive plays, the home football team gains 12 yd, loses 3 yd, loses 5 yd, gains 15 yd and runs 16 yd for a touchdown. What is the average gain or loss in yards per play?

*asked on September 14, 2015* -
## chem

The half-life of the Nobelium isotope No^257 is about 23 seconds. 644 seconds (or 28 half-life periods) after the isotope was released there were 20 grams remaining. The number of grans of No^257 after h half life periods is M= 20 * (1/2)^h where h = 0

*asked on September 13, 2015* -
## algebra

Maria shares a house with 4 others. She pays $500 rent per month plus her utilities. If the utilities cost a total of x dollars, how much more money,M, does maria owe Write an equation for how much maria owes.

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

The standard deviation of a sample taken from population A is 17.6 for a sample of 25. The standard deviation of a sample taken from population B is 21.2 for a sample of 30. The standard deviation of the sample mean differences is_____. (Round your answer

*asked on July 15, 2015* -
## chemistry

50cm3 of hydrogen is collected over water at 17 degree celsius and 750 mm Hg pressure.Calculate the volume of dry gas at S.T.P.The water vapour pressure at 17 degree celsius is 14 mm Hg?

*asked on May 28, 2015* -
## Art and Creative Development

Art helps children socially because: A. they can make artistic products for others to see at art shows B. during are activities, they interact and learn social skills such as sharing and taking turns. C. they can make crafts that can be sold to other

*asked on May 4, 2015* -
## Art and Creative Development

Young children who learn easily, ask thought-provoking questions, and are very curious are often: A. gifted or talented B. behavior problems in the classroom C. poor at following directions D. overly shy and withdrawn socially i think it is between a and d

*asked on May 4, 2015* -
## physics

two charges of equal magnitude are 25.5 cm apart if the force between the charges is 155 N what is the magnitude of the charges

*asked on April 28, 2015* -
## math

Sam has 18 coins in his pocket that are either quarters or nickels. The total value of these coins is $3.90. Let q represent the number of quarters and n represent the number of nickels. The following system of equations represents this situation: q+n=18

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

A community group bought 25 tickets to a play. Adult tickets cost $30 each and student tickets cost $20 each. In all, the group spent $620 on the tickets. Determine if each equation is a part of the system of equations that can be used to find the number

*asked on April 27, 2015* -
## Geometry

Describe the difference between saying that two segments are congruent and saying that two segments have equal length. When would you use each phrase?

*asked on April 23, 2015* -
## World History

Explain the impact of the Japanese attack on Pearl Harbor.

*asked on April 18, 2015* -
## physics

find the weight of a person with a mass of 68.0kg

*asked on April 15, 2015* -
## Radiometric (Radioactive) Dating

How old is a sample that contains 125 atoms of U-235 and 375 atoms of Pb-207? ...Given that the half life values on my handout are 713 million years. *I do not even know where to start so could you please explain in steps too? Thanks.

*asked on March 29, 2015* -
## finite math

Sam wants to invest the same amount at the end of every 3 months so that he will have 4000 in 3 years. The account will pay 6% compounded quarterly. How much should he deposit each quarter.

*asked on March 27, 2015* -
## finite math

A young couple saves for a down payment on a house by depositing $100 each month into an annuity that pays a 4.8% annual rate. Find the amount in the annuity at the end of 2 years.

*asked on March 27, 2015* -
## Chemistry

An electron has an uncertainty in its position of 507pm. What is the uncertainty in its velocity?

*asked on March 13, 2015* -
## High School Algebra II

Hey friends, I have a big assignment I've been given that I really, really could use an 100% on. I've been working on it for hours and have a decent amount done, have had teacher help, and have had friends work with me on it, but I still need help. If

*asked on March 8, 2015* -
## chemistry

At 29.6 degrees C, pure water has a vapor pressure of 31.1 torr. A solution is prepared by adding 86.7 g of "L" a nonvolatile nonelectrolyte to 390.0 g of water. The vapor pressure of the resulting solution is 27.6 torr. Calculate the molar mass of "L"

*asked on February 13, 2015* -
## statistics

Produce a 99.9 % confidence interval for the population mean body temperature of a healthy male. Then do the same for the population of healthy females. Round your answers to three decimal places.

*asked on February 3, 2015* -
## finance

A stock has a beta of 2.0. A security analyst who specializes in studying this stock expects its return to be 24%. Suppose the risk-free rate is 6 percent and the market-risk premium is 10 percent. Is the stock overvalued or undervalued relative to the

*asked on December 8, 2014* -
## Algebra

I need help with my math pizzazz worksheet page 167 1.3x-5y=13 X-2y=5 2.7x-2y=-1 3x-4y=19 3.2x+3y=7 3x+4y=10

*asked on December 8, 2014* -
## algebra

to conduct a scientific experiment, students need to mix 90 millimeters of a 3% acid solution. They have a 1% solution and a 10% solution available. How many millimeters of a 1% solution and of the 10% solution should be coming to produce 90 millimeters of

*asked on December 7, 2014* -
## Chemistry

A) if you added 8g of ammonium nitrate to 25mL of room temperature water, what would be the temperature in °C?

*asked on November 30, 2014* -
## MATH 100

The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two light sources, one 10 times as strong as the other, are placed 9 ft

*asked on November 27, 2014* -
## Fins nance business

1. Find the future value of current $1,000 5 year from now when annual interest rate 8% is compounded annually 2. Find the present value of a future value (1,000) four years from now when annual interest rate 8% is compounded quarterly. 3.Find the present

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

Let's say for example I have 5g of copper in a beaker. Mass would be 5g + mass of beaker. If I add any given amount of water to the beaker containing the copper, that will change the mass of the beaker containing the copper. Am I correct so far? So then if

*asked on November 5, 2014*