Tuesday

February 21, 2017
Total # Posts: 630

**chemistry**

fu

*February 16, 2017*

**chemistry**

How much energy is required to increase the temperature of 755 g of iron from 10 ?C to (40,679 J)?

*February 16, 2017*

**Math-Geometry**

Thank You, I will try to do well on my test tomorrow.

*February 13, 2017*

**Math-Geometry**

AB=3/4 BC=-4/3 CD=3/4 DA=-4/3 Paragraph Beginning-In Order to Prove that the rectangle ABCD is a quadrilateral, there must be four right angles. Middle-AB=3/4 BC=-4/3 CD=3/4 DA=-4/3 AB=CD BC=DA End-Since each of the two segments are an opposite reciprocal to each other, the ...

*February 13, 2017*

**Please I have struggled and i am unable to find the answer**

Please I have struggled and i am unable to find the answer

*February 13, 2017*

**Math-Geometry**

For coordinates A(1,-4) B(5,-1) C(8,-5) D(4,-8) Prove ABCD is a rectangle through the use of a coordinate paragraph.

*February 13, 2017*

**math**

Eight friends went to a hockey game. The price of the admission per person was $x. Four of the friends paid an extra $6 each for players guide book. Write and simplify an expression that represents the total cost.

*January 26, 2017*

**Math**

$11

*December 1, 2016*

**Math**

Alan wants to spend 1/5 of his money on a toy and 1/4 of it on a book. If he has $20, how much money will he have left over?

*December 1, 2016*

**Chemistry**

A calcium sample weighting 607.4 mg was precipitated as oxalate and calcined calcium carbonate giving 246.7 mg. What the percentage of calcium in the sample? Calcium molecular weight: 40.078 g/mol CaCO3 molecular weight: 100 g/mol

*November 2, 2016*

**Chemistry**

Thanks! =)

*October 28, 2016*

**Chemistry**

In the reaction of formation of sodium chloride (NaCl), 15 g of sodium is placed in contact with 20 g of chlorine. What is the reactant in excess and its mass in excess?

*October 28, 2016*

**Math**

How do you get $1.60 out of 23 coins that are only nickels and dimes

*September 29, 2016*

**Chemistry**

thanks!

*September 15, 2016*

**Chemistry**

If 0.250 L of aqueous solution with a density of 1.00 g/mL contains 13.7 g of pesticide, express the concentration of pesticide in (a) ppm and (b) ppb.

*September 15, 2016*

**Chemistry**

The density of an unknown gas is 1.23 g/L in 330K and temperature 25.5 pressure kPa. What is the molar mass of the substance?

*September 9, 2016*

**Algebra 2**

You and a friend take turns driving on a 450 mile trip. Your friend drives for 3.5 hours at an average speed of 60 miles per hours. What must your average speed be for the remainder of the trip if you want to reach your hotel in 4 more hours?

*September 8, 2016*

**Chemistry**

What substance is acting as the Brønsted-Lowry base in the forward reaction below? H2O + NH3 yields NH4+ + OH-

*September 3, 2016*

**algebra**

how to solve this problem using grouping symbols. 4^2 -5 x 2+1=1

*August 16, 2016*

**math**

DeWitt Company sells a kitchen set for $320. To promote July 4, DeWitt ran the following advertisement: Beginning each hour up to 4 hours we will mark down the kitchen set 8%. At the end of each hour, we will mark up the set 3%. Assume Ingrid Swenson buys the set 1 hour 30 ...

*June 20, 2016*

**math**

An Apple Computer Center sells computers for $1,192.80. Assuming the computers cost $10,080 per dozen. a. Find the dollar markup for each computer. (Round your answer to the nearest cent.) Dollar markup $ b. Find the percent markup on cost for each computer. Percent markup % ...

*June 20, 2016*

**Mathematics**

A shop offered a special on socks and handkerchiefs for Father's Day. For k50 you could buy 7 pair of socks and 3 boxes of handkerchiefs or for K24 you could buy 3 pair of socks and 2 boxes of handkerchiefs. A. From a pair of simultaneous equations for the given ...

*June 13, 2016*

**Urgent =Math**

Tell whether this survey describes a good sample and if so, name the method of sampling used. A phone company randomly calls 6 names from the phone book to find whether the person is satisfied with the phone service. yes, random yes, systematic***** yes, stratified not a good ...

*May 6, 2016*

**Urgent =Math**

17. Tell whether this survey describes a good sample and if so, name the method of sampling used. Every sixth person leaving a restaurant is surveyed to determine their favorite food from the menu. yes, random******** yes, systematic yes, stratified not a good sample 18.Tell ...

*May 6, 2016*

**math**

it would take the roach 23 seconds to scurry away

*May 6, 2016*

**Stats**

WOW, I worked on that for 25 minutes.. It took you only a few.. I'm just staring at these questions and painting nails... lol. Thank you so much ;)

*May 5, 2016*

**Stats**

The host of a dinner party purchases wine based on the weighted average of clarity (10%), bouquet (5%), friendliness to the palate (5%), storage ability of opened bottles (40%), and price (40%). Suppose that Bone Ranch Wave has scores in these categories of 4, 5, 3, 8, and 9, ...

*May 5, 2016*

**Chemistry**

3 x 10^23 molecules of element Z have a mass of 38 g. What is the mass of 1 mole?

*May 4, 2016*

**Chemistry**

Awesome ! thanks!@ Drbob

*May 3, 2016*

**Chemistry**

To neutralize 8.34 ml of HCl 36.5% by mass and density = 1, 2 g/cm3, the required volume of 5 mol/L NaOH will be?

*May 3, 2016*

**Chemistry**

To neutralize 8.3 4 ml of HCl 36.5% by mass and density = 1, 2 g/cm3, the required volume of 5 mol/L NaOH will be?

*May 3, 2016*

**Pre-Calculus**

suppose y is directly proportional to x. if y=6 when x=4, find the constant of proportionality and write the formula for y as function of x. Use your formula to find x when y=8.

*April 27, 2016*

**Chemistry**

Determine the mass, in grams, of water contained in 0.25 litres of aqueous solution that has 10% dissolved salt and density equal to 1.10 g/cm3

*April 27, 2016*

**Anyone Help ASAP!!**

I found out my mom is right it is B

*April 26, 2016*

**Anyone Help ASAP!!**

During the Civil War, all of the battles and most of the population of Florida were' A.) in the interior of the state B.) in the north of the state C.) in the south of the D.) on the coasts of the state Everyone in family disagrees. My mom says B. I say D. Sister says C. ...

*April 26, 2016*

**Chemistry**

Thanks :)

*April 25, 2016*

**Chemistry**

Knowing that the milk of magnesia contains 8 g% of Mg (OH)2, using 1 g of milk of magnesia and added 50 mL of 0.100 M HCl, determine the required volume of a solution of 0.105 M NaOH to titrate the excess HCl 0.100 M.

*April 25, 2016*

**Chemistry**

20 mL of a solution of HCl concentration, neutralized 0,50 g of Na2CO3. What is the Molarity of the acid solution?

*April 25, 2016*

**Information Technology**

Hope this helps: An executable virus is a non resident computer virus that stores itself in an executable file and infects other files each time the file is run. The majority of all computer viruses are spread when a file is executed or opened.

*April 25, 2016*

**Urgent Plz Help?!?!?!?**

Thank you @Ms.Sue is: 1.)D 3.)B 16.)C

*April 25, 2016*

**Urgent Plz Help?!?!?!?**

you asked me to post my answers and you would check them but you won't check them so much for helping me

*April 25, 2016*

**@Reed plz check**

I updated my answers

*April 25, 2016*

**Urgent Plz Help?!?!?!?**

1.) A 2.) B 3.) C 5.) A 6.) C 11.)B 13.)B 16.)C 18.)B Can you check these Reed sorry

*April 25, 2016*

**Urgent Plz Help?!?!?!?**

1. which factor contributed most to increase importance of literature in American culture during the 19th century? A.)the success of major social-reform movements B.)the spread of utopian communities throughout the nation C.)the migration of European intellectuals to the ...

*April 25, 2016*

**History**

2.The writings of Transcendentalists had the greatest influence on which of the following movements? A. Labor movement B. Women's movement C. Civil rights movement D. Counterculture movement I am stuck between 2 answers: B and C which is correct?

*April 25, 2016*

**Review**

Here is my answer that I have submitted: When I encounter a part of a lesson or math problem that makes me feel stuck or confused I just skip it and come back. I only have a limited time to complete everything so when I see a problem I can't figure out I skip it and come ...

*April 21, 2016*

**Review**

I just skip over it and ask for help but I don't want to put that because I don't know what she will think of that can you give me an example and I can explain it?

*April 21, 2016*

**Review**

When you encounter a part of a lesson or math problem that makes you feel stuck or confused, what do you do? How do you help yourself get unstuck and back on track?

*April 21, 2016*

**Chemistry**

The ions Cr3+ and O2- combine to form the ionic chromium oxide. in what proportions do these ions combine to produce a neutral compound?

*April 19, 2016*

**Math**

Help please. Find a number between 1/15 and 1/16.

*April 18, 2016*

**Chemistry**

Calculate the mass of NaCl required to cause dissolution of 0.010 moles of AgCl in 100 mL of solution. Consider that the addition of NaCl does not cause increased volume in the solution KSP (AgCl) = 1.0 x 10 ^ -10 KF (AgCl2) = 3.0 x 10 ^ 5 Answer This Question

*April 15, 2016*

**Chemistry**

Calculate the mass of NaCl required to cause dissolution of 0.010 moles of AgCl in 100 mL of solution. Consider that the addition of NaCl does not cause increased volume in the solution KSP (AgCl) = 1.0 x 10 ^ -10 KF (AgCl2) = 3.0 x 10 ^ 5

*April 15, 2016*

**english help please!!**

It is D!!!!!!

*March 27, 2016*

**Chemistry**

How many grams of nitrogen are present in 2 moles of HNO3?

*March 25, 2016*

**Algebra**

Ms. Sue thank you very much for your help. I truly appreciate it.

*March 15, 2016*

**Algebra**

1. A house valued at $100,000 gains 6 percent in value. Which expression shows the current value of the house in dollars? a. 6/100 * 100,000 b. 1.06 * 100,000 c. (1+0.06)100,000 d. 1.06(1 + 100,000) 2. Which equation has the same solution as -3(2x - 4)= 30? a. 2x - 4 = -10 b. ...

*March 15, 2016*

**Algebra**

I have 4 math problems, can you help.

*March 15, 2016*

**Algebra**

can you help me with algebra

*March 15, 2016*

**Math**

How many bags of fertilizer would I need to cover 1.68 acres

*March 14, 2016*

**Math**

The y-coordinates of the set of points on a graph. Also, the y-coordinates of a given set of ordered pairs. The range is the output in a function or a relation.

*February 15, 2016*

**Math**

What is: one that has several letters or variables

*February 15, 2016*

**yale**

what does brain processing and development described as use it or loose it mean?

*February 13, 2016*

**Chemistry**

What volume of air at 1.0 atm and 25 degree Celsius must be taken to an engine to burn 1 gallon of gasoline? Assuming that: 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O provides reasonable model of the actual combustion process. ( The partial pressure of oxygen in air is 0.21 atm ...

*January 22, 2016*

**Pre-cal**

Each of the two congruent sides of an isosceles triangle are 10 centimeters more than 1/2 the length of the base. If the perimeter of the triangle is to be at most 100 centimeters, what is the maximum length of the base?

*January 21, 2016*

**math**

jerry has to pay off his walking aids using a payment plan. he can afford $25 a fortnight. how many weeks will it take jerry to pay off the debt?

*January 16, 2016*

**math**

jerry needs to buy two walking aids. one will cost $150 and the other will cost$ 75. how much jerry need to spend?

*January 16, 2016*

**math**

choose all values of x that would make the inequality true and how? 2/3 or 0.6 or 3/6 or 59% or 58x10_2

*October 25, 2015*

**geometry**

RT=5x=7 and RS=15x-1, what is the value of x?

*October 8, 2015*

**FIN/370**

If a firm buys on trade credit terms of 1/10, net 45 decides to forgo the trade credit discount and pay on the net day, what is the annualized cost of forgoing the discount (assume a 360-day year)? The annualized cost of the trade credit terms of 1/10, net 45 is ?%. (round to ...

*October 3, 2015*

**Algebra**

Write the word phrase as an algebraic equation The ratio of 16 to x

*August 31, 2015*

**life science**

carbon dioxide is present in expired air

*August 3, 2015*

**algebra**

√6(5-√6)+2√6 simplify the expression

*April 25, 2015*

**SS**

I think the answer is D. That is just my opinion though, because Xiao has a badly polluted area that he lives in.

*April 20, 2015*

**Math**

You have a rectangular yard that has perimeter of 72 meters. The current area is between 300 and 350. What are the dimensions of your current fenced in space

*March 9, 2015*

**Math 222**

a^4b plus a^2b^3 a^4b + a^2 B^3 Thank you for the answer, but please explain it to me how you got it

*February 17, 2015*

**Math 222**

). a^4b plus a^2b^3

*February 17, 2015*

**Math 222**

18z plus 45 plus z^2 *My addition sign is not working*

*February 17, 2015*

**College Algebra**

Write an equation that has the given solutions. 0, 2, and 9

*February 16, 2015*

**PED 212**

What are some pros and cons in relevance within a school environment in organized sports?

*February 15, 2015*

**geluksdal secondary school**

Explain how you can determine the number of neutrons in an atom

*February 12, 2015*

**College Algebra**

solve for b, A=1/2(a+b)h

*February 3, 2015*

**College Algebra**

s=c+rc solve for c

*February 3, 2015*

**College Algebra**

A grocer mixes peanuts that cost $1.49 per pound and walnuts that cost $2.69 per pound to make 100 pounds of a mixture that costs $2.21 per pound. How much of each kind of nut did the grocer put into the mixture?

*February 3, 2015*

**College Algebra**

A person who is 6 feet tall walks away from a 50-foot tower toward the tip of the tower's shadow. At a distance of 32 feet from the tower, the person's shadow begins to emerge beyond the tower's shadow. How much farter must the person walk to be completely out of ...

*February 3, 2015*

**College Algebra**

A truck driver traveled at an average speed of 55 miles per hour on a 200-mile trip pick up a load of freight. On the return trip (with the truck fully loaded), the average speed was 40 miles per hour. What was the average speed for the round trip?

*February 3, 2015*

**Physics**

A(n) 0.42 kg softball is pitched at a speed of 12 m/s. The batter hits it back directly at the pitcher at a speed of 27 m/s. The bat acts on the ball for 0.016 s. What is the magnitude of the impulse imparted by the bat to the ball? Answer in units of N · s. What is the...

*February 1, 2015*

**grammar**

If there is practice after school on Friday, I can drop the kids off and you can pick them up.

*January 26, 2015*

**PED 212**

All tasks have rules. What is the rule in the example illustrated below? Start with one partner making an underhand serve to the wall. On the rebound, let the ball bounce before the second partner volleys the ball back to the wall. Try to keep the ball above the line. When ...

*January 23, 2015*

**PED 212**

How can a lesson plan be used as a form of program advocacy? (Points : 1) a). it can be published b). it can be shared with other teachers c).it demonstrates a professional ethic d). it can be shown ahead of time to parents

*January 23, 2015*

**PED 212**

I would say( b)

*January 23, 2015*

**PED 212**

What is the purpose of a learned society? a).to create curriculum for local schools b). to gain knowledge on a variety of subjects c). to develop a core of content experts d). to dedicate scholarship and research to specific subjects

*January 23, 2015*

**PED 212**

Which of the following factors is NOT essential to being able to properly strike an object? (Points : 1) a).tracking an object with the eyes b) intercepting an object c).swinging with force d).eye-hand coordination

*January 23, 2015*

**PED 212**

What is the purpose of a learned society?

*January 23, 2015*

**PED 212**

During which stage of play where a child is no longer concerned about what other children are doing?

*January 18, 2015*

**8th Grade Geometry**

given that triangle ABC~ triangle XYZ, angle a=50, angle x=(2x+5y), angle z= (5x+y), and that angle b =(102-x), find angle z.

*January 11, 2015*

**Physics**

A 1500 kg car traveling at 100 km/h west collides with a 1200 kg car traveling east at 85 km/h. The heavier car slows to 25 km/h after the collision. How fast is the lighter car traveling after the two cars collide?

*January 8, 2015*

**P.E**

Thanks LizLiz so much I got an A!!!!!!!!!!!!

*December 18, 2014*

**algebra**

A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. A car leaves the same rest stop 1/4 hours later following the truck at a steady rate of 64 mi/h. How long after the truck leaves the rest stop will the ca overtake the truck?

*December 11, 2014*

**math**

Julianne earned $296 working at a grocery store last week. She earns $8 per hour. How many hours does did julianne work?

*December 10, 2014*

**Statistics**

A card is selected at random from a standard deck of cards. Find the probability of randomly selecting a king given that an ace has already been selected.

*December 9, 2014*