Friday

August 26, 2016
Total # Posts: 148

**Chemistry**

A solution of 0.211 M NaOH is used to titrate 24.0 mL of a H2SO4 solution. If 19.0 mL of the NaOH solution is required to reach the endpoint, what is the molarity of the H2SO4 solution? H2SO4(aq)+2NaOH(aq)→2H2O(l)+NaSO4(aq)
*July 22, 2016*

**Chemistry**

A CaCl2 solution is given to increase blood levels of calcium. If a patient receives 5.0 mL of a 5.0 % (m/v) CaCl2 solution, how many grams of CaCl2 were given?
*July 17, 2016*

**Check my answers? Science**

The order of events and ages of rocks by examining positions is *relative dating*. Gaps in rock layers are called *unconformities*. What uses properties of atoms to find ages of rocks? *Absolute Dating*. A life form in Precambrian Time was *Cyanobacteria*. What signaled the ...
*May 9, 2016*

**Chemistry**

I'm not sure how to do these...I keep getting the wrong answers... Please help someone... Mg(s) + 2 HCl(aq)= MgCl2 (aq) + H2(g) a. What volume of 15.7 M hydrochloric acid will react with 2.1 grams of Mg? b. What mass of magnesium will react with 8.5 liters of 0.7 M ...
*April 15, 2016*

**Math**

The length of a rectangle is equal to triple the width. Find the dimensions of the rectangle if the perimeter is 72 cm
*March 14, 2016*

**Math**

Thanks
*March 3, 2016*

**Math**

The legs of a right triangle measure 24 feet and 45 feet. What is the length of the hypotenuse? A. 51 ft** B. 69 ft C. 38.07 ft D. 8.31 ft I think A
*March 3, 2016*

**math**

Use synthetic division to evaluate the polynomial function for the given value of x. f(x)= 2x^5-x^3+7x+1, x = 3
*February 28, 2016*

**Spelling **

Leave is to left as bring is to
*February 24, 2016*

**algebra**

what is the slope of the line that passes through the pair points (-7/2,-3)and (-5,5/2)? so far i did m=5/2-(-3) / -5-(-7/2)=11/2 / -3/2 i dont know the rest Im finished my math homework but not this question and class starts in 15 minutes please help me!!!!
*January 6, 2016*

**fractions**

38/53 in the simplest form
*January 1, 2016*

**Science **

How can you describe the location of magnesium (Mg, atomic number 12) periodic table? A. nonmetal B. metalloid C. group2, period3 D. group3, period 2 @Ms.Sue My answer is C. Can you check my answer Thank you
*November 7, 2015*

**Science**

@DrBob222
*November 7, 2015*

**Science **

Which process of the carbon cycle is responsible for the release of carbon at the power plant, as shown by the arrow? A. combustion B. photosynthesis C. digestion D. decomposition @Ms.Sue can you check my answer I think the answer is A.
*November 7, 2015*

**Science**

inheritance
*October 3, 2015*

**Physics**

an automobile travels 3 miles due north then 5 miles north of east. what is your resultant displacement?
*June 28, 2015*

**Math**

tell me if you got it right.
*June 6, 2015*

**Chemistry**

How many moles are in 1.59 kg of sodium?
*June 4, 2015*

**Civics**

What portion of the Congress or the states must support proposing an amendment to the Constitution for consideration? One-half Three-fifths One-fourth Two-thirds
*May 15, 2015*

**Math**

Jack brought 2 quart of motor oil. His car took 1quart and another half quart. How many cups of oil does he have left?
*April 13, 2015*

**Math**

Jack brought 2 quart of motor oil. His car took 1quart and another half quart. How many cups of oil does he have left?
*April 13, 2015*

**physics **

A tennis ball (mass 57.0 g) moves toward the player's racquet at 46.4 m/s. It is in contact with the racquet for 3.60 ms, after which it moves in the opposite direction at 49.8 m/s. What is the average force on the ball due to the racquet? (Assume the ball is moving in the...
*February 8, 2015*

**physics **

In a game against the White Sox, baseball pitcher Nolan Ryan threw a pitch measured at 44.8 m/s. If it was 18.4 m from Nolan's position on the pitcher's mound to home plate, how long did it take the ball to get to the batter waiting at home plate? Treat the ball's ...
*February 8, 2015*

**math**

opps its a while later
*February 6, 2015*

**math**

answer is c I did test too
*February 6, 2015*

**Physics**

A box is pulled along a level floor at a constant speed by a rope that makes a 45 degree angle with the floor. The box weighs 100N. The coefficient of sliding friction is 0.75. The normal force exerted on the box by the floor is?
*January 7, 2015*

**Physics**

Fg = mg Fg = (11.0)(9.81) Fg = 107.91 N Sin x/1 = Fg parallel/Fg Sin 25.0/1 = Fg parallel/107.91 Cross multiply (107.91)sin(25) = 45.6 N ≈ 46 N *(≈ <-- is an approximation symbol)
*December 10, 2014*

**Physics**

Fg = mg Fg = (11.0)(9.81) Fg = 107.91 N Sin x Fg parallel ------ = ------------- 1 Fg Sin 25.0 Fg parallel --------- = ------------- 1 107.91 Cross multiply (107.91)sin(25) = 45.6 N ≈ 46 N *(≈ <-- is an approximation symbol)
*December 10, 2014*

**math**

How do you solve/simplify 32x^3y^4. 3X Over. Times 24x^3y^2. 9Y
*December 4, 2014*

**NEED Math HELP please!!!**

Thank you so much
*December 4, 2014*

**NEED Math HELP please!!!**

Can you help me solve for y? 8x-4xy=3 -2x-5y=10
*December 4, 2014*

**math**

How do you solve for y? 8x-4xy=3 And -2x-5y=10
*December 4, 2014*

**science**

biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they use up more energy ...
*November 12, 2014*

**science**

1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is possible because of what? ...
*November 12, 2014*

**science**

need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion channel? 3. Receptor ...
*November 12, 2014*

**Physics**

Mark uses 27 J of work to carry the laundry basket with a force of 17 N. What is the distance he carried the laundry basket?
*November 11, 2014*

**science**

biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they use up more energy ...
*November 11, 2014*

**science**

1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is possible because of what? ...
*November 11, 2014*

**science**

need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion channel? 3. Receptor ...
*November 11, 2014*

**biology**

biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they use up more energy ...
*November 11, 2014*

**biology**

1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is possible because of what? ...
*November 11, 2014*

**biology**

need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion channel? 3. Receptor ...
*November 11, 2014*

**Math**

0,1,and 2
*October 12, 2014*

**Math**

How do you identify the vertex of y= xsquared + 16x+64
*September 4, 2014*

**math**

If a person walks 21 feet in 7 seconds how long does it take to walk 180 feet
*August 28, 2014*

**biology**

why is time considered the variable instead of being considered the result/answer?
*August 6, 2014*

**biology**

doing a biology project and they want us to figure out how long it takes to cook 6 different foods at 5 different temperatures and gather 30 seperate data points. They want us to identify an x(independent) and a y(dependent) variable that can be recorded on a table. Would x be...
*August 6, 2014*

**science**

doing a biology project and they want us to figure out how long it takes to cook 6 different foods at 5 different temperatures and gather 30 seperate data points. They want us to identify an x(independent) and a y(dependent) variable that can be recorded on a table. Would x be...
*August 5, 2014*

**Math**

Simplify M^3 n^6 / m^4 n^4 p^-2
*April 25, 2014*

**Chemistry**

How many grams of sodium acetate, NaC2H3O2, would have to be added to 5.00 L of 0.65 M acetic acid (pKa 4.74) to make the solution a buffer for pH 4.00? I did this but it's not the right answer: 4 =4.74 + log(A/.65) 0.74=log(A/0.65) 10^-0.74= A/0.65 0.182 = A/0.65 0.118= A...
*April 24, 2014*

**chemistry**

(0.930atm*0.393L)/(0.0821*298)= 0.0149mol 0.0149mol/0.393L= 0.038 -log(0.038)= 1.42 what did I do wrong?
*April 24, 2014*

**social studies (check answers)--Mrs.Sue**

Sorry, i meant number 2 on the last one
*April 22, 2014*

**social studies (check answers)--Mrs.Sue**

Number 3 is C:redirection of oil wealth to provide social services.
*April 22, 2014*

**social studies (check answers)--Mrs.Sue**

Number 3 is D: the search for fossil fuels.
*April 22, 2014*

**Math**

When I did it I got y=3/4x+9 1/2... Did u get that also ?
*April 20, 2014*

**Math**

Write an equation in slope intercept form of the line that is perpendicular to the given line and that passes through the given point 3x-4y=8 ; (-6,5)
*April 20, 2014*

**Math**

For f(x)=3x+2. Find f(4)
*April 20, 2014*

**Math**

A model plane flies 18 ft per 2 seconds. What is the planes speed in miles per hour? Round to the nearest tenth.
*April 20, 2014*

**math..help again**

Got it.... Thanks so much!!!
*April 1, 2014*

**math..help again**

A photo lab manager graphed the cost of having photos developed as a function of the number of photos in the order. The graph is a line with a slope of 1/10th that passes through (10,6). Write an equation in slope-intercept form that describes the cost to have photos developed.
*April 1, 2014*

**math**

So if slope intercept form is y=mx+b what would this equation look like for this word problem? Thanks
*April 1, 2014*

**math**

A photo lab manager graphed the cost of having photos developed as a function of the number of photos in the order. The graph is a line with a slope of 1/10 that passes through (10,6). Write an equation in slope-intercept form that describes the cost to have photos developed. ...
*April 1, 2014*

**math**

solve for A B=3/8(A-10)
*March 26, 2014*

**math**

yes. the equation is c = 6u^2v...solve for v sorry...thanks
*March 26, 2014*

**math**

Solve for v: C=6u2v
*March 26, 2014*

**Math - please help**

Ling is three times as heavy as her packed suitcase. Her suitcase is 20 pounds heavier than her knapsack. The weights of Ling, her suitcase, and her knapsack total 170 pounds. How much does each weigh? Identify a variable, set up an equation, and solve. Thanks so much
*March 11, 2014*

**Math **

Ling is three times as heavy as her packed suitcase. Her suitcase is 20 pounds heavier than her knapsack. The weights of Ling, her suitcase, and her knapsack total 170 pounds. How much does each weigh? Identify a variable, set up an equation, and solve. Thanks so much
*March 11, 2014*

**Chemistry Urgent**

Assuming that kerosene is C11H24, calculate the standard enthalpy change when 1 mole of kerosene burns completely in oxygen, using the data below: ΔH of formation of C11H24(l) = -327 kJ mol ΔH of formation of CO2(g)= -394 kJ mol ΔH of formation of H2O (l)= -286 ...
*March 9, 2014*

**math **

In new Your a taxi costs 72 cents for the first 1/10th of a mile and 15 cents for every additional 1/10th mile. How much does it cost to drive 6 miles? Set up and solve? I do not understand how you got this answer...can you explain? .72+ .15(6-.1).1 = $9.57 When I work the ...
*February 27, 2014*

**math**

In New York a taxi costs 72 cents for the first 1/10th of a mile and 15 cents for every additional 1/10 mile. How much does it cost to drive 6 miles? Set up and solve? Thanks
*February 17, 2014*

**Math**

Julia and Kevin are playing games at the arcade. Julia started with $15, and the machine she is playing cost $.75 per game. Kevin started with $13, and his machine costs $.50 per game. After how many games will these two kids have the same amount of money remaining? Set up an ...
*February 12, 2014*

**Chemistry - DrBob222**

It did help. Thank you very much :-)
*February 11, 2014*

**Chemistry - DrBob222**

C6H14 + Cl2 in UV light Below are 5 products, say which one cannot be a product, prove this by showing how each of the other products were formed from the equation above. 1-chlorohexane 2-chlorohexane 2,2-dichlorohexane dodecane hex-1-ene
*February 11, 2014*

**Chemistry urgent**

C6H14 + Cl2 in UV light Below are 5 products, say which one cannot be a product, prove this by showing how each of the other products were formed from the equation above. 1-chlorohexane 2-chlorohexane 2,2-dichlorohexane dodecane hex-1-ene
*February 11, 2014*

**Chemistry Urgent**

1) 30cm3 of methane and ethane mixed with 100cm3 of O2 at RTP. Explosion occurs, on cooling 61.5cm3 remained. Find the percentage by volume of each gas in the mixture 2)32cm3 of a mix of CO2, CH4 and H2 mix with 50cm3 of O2 and exploded after cooling to RTP, volume noted is ...
*February 10, 2014*

**teas test**

a population decreases from 404 million to 288 million. what is the percent decrease of the population?
*February 4, 2014*

**algebra**

An oil painting is 16 years older than a watercolor by the same artist. The oil painting is also three times older than the watercolor. How old is each? Identify a variable, set up an equation, and solve.
*January 27, 2014*

**math**

An oil painting is 16 years older than a watercolor by the same artist. The oil painting is also three times older than the watercolor. How old is each? Identify a variable, set up an equation and solve. thanks
*January 27, 2014*

**Math**

Describe how using factor pairs helped you solve the problems
*January 23, 2014*

**math**

What is Bobby's number? It is between 15 & 25. If you subtract the tens digit from the ones digit, the difference is 8.
*January 22, 2014*

**math**

Robert has three boxes of letters: The first box contains the six letters in the word "bubble" the second box has the three letters in the word "zoo" and the third contains the four letters in the word "taxi". If he randomly selects one letter ...
*January 20, 2014*

**math**

a school's chorus bought 30 tickets to a play. total cost of tickets $98. if student tickets cost $3 and each adult tickets cost $5, how many adults are going with the chorus? thanks
*January 13, 2014*

**math**

a CD player currently sells for $80. The owner of the store suggests a 9% increase in the price. What will be the new price of the player?
*January 7, 2014*

**social studies**

Which 5 American men are competing in the Skelton event of the 2014 Winter Olympics
*December 3, 2013*

**math**

three sisters run a business. they charge $260 for each job. If the oldest sister earns 50% more than the middle sister and if the youngest sister earns 50% less than the oldest sister, how much does each sister earn per job? hint: Identify the variable and then write each ...
*December 3, 2013*

**into computers**

Your boss is considering a BYOD program for your company. He asks you if there are any negatives to such a program. What do you tell him? A. It limits the freedom of the user to access websites and applications. B. It introduces security and control problems. C. It requires ...
*November 20, 2013*

**math**

Jim is putting up fence posts around a rectangular garden. He used 50 posts and placed them 2 feet apart. The length of the garden is 30 feet. What is the perimeter of the garden? What is the area of the garden? thanks
*November 19, 2013*

**math**

In a random sample of 150 students, 60 ride the bus to school, 54 ride in carpools and 36 walk. It is predicted there will be 800 students in school next year. How many will need bus transportation?
*November 12, 2013*

**math**

Lisa and her father stand next to each other on a sunny day. Lisa is 130 centimeters tall and her father is 200 centimeters tall. Lisa's shadow is 100 centimeters. How long is lisa's father's shadow to the nearest centimeter?
*November 6, 2013*

**algebra**

end of season sale for summer clothes advertises 30% to 45% off the original price. What was the highest original price of a swimsuit that is now on sale for $12.99? What was the lowest original price?
*November 6, 2013*

**chemistry**

Iron reacts with chlorine to form iron(iii)chloride. A)How many chlorines react with 1.86g of iron? B)What mass of iron(iii)chloride is produced?
*October 23, 2013*

**Chemistry- DrBob222**

I completed this question like you told me to. Are the answers correct? Is my method for finding the molecular formula correct? 2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass of the compound was ...
*October 22, 2013*

**CHEMISTRY**

25cm^3 of a solution of NaOH required 28cm^3 of 1.0 mol dm^-3 H2SO4 to neutralise it. a)Write an equation for the reaction. b)How many moles of H2SO4 were needed? c)How many moles of NaOH were thus neutralised? d)How many moles of NaOH are there in 25cm^3 of solution?
*October 20, 2013*

**Math**

Whats the answer for 0.15 divided into 0.1845
*April 1, 2013*

**english**

It is A, I just did that one on my quick check
*March 12, 2013*

**Grammer**

It is a metaphor I just did that quick check :D
*March 11, 2013*

**Science**

Please check my answers? My textbook won't load, so i've had to use google and guess. 1. Scientists hypothesize that the sun formed ____. (1 point) less than a billion years ago **from a cloud of gas and dust less than a million years ago from a chunk of Jupiter 2. Two...
*February 19, 2013*

**7th grade math ASAP quick please**

I go to connections academy too and I hate it with a passion!!!!!! it sucks!!!!!!! but hey hi guys & thanks for the answers
*October 8, 2012*

**Science**

. You and your friend are walking along a beach in Maine on January 15, at 8:00 am. 2. You notice a thermometer on a nearby building that reads -1 degrees C. 3. You also notice that there is snow on the roof of the building and icicles hanging from the roof. 4. You further ...
*September 10, 2012*

**Science**

Ms. Sue this is Ava will you please check my science answers that i posted
*September 10, 2012*