Tuesday

January 24, 2017
Number of results: 58,366

**science**

I am having trouble with Restate the problem in terms of the following: Manipulated variable Constant (control) variables Principles of experimental design State in correct form the hypothesis you intend to demonstrate. I have conducted the experiment but I am not sure how to ...

*December 16, 2008 by pookie*

**Physics help**

Let's say you have a plot for Pendulum experiment. Let's assume g for this experiment was measured (from the slope of the plot) to be 9.78 [ms-2. The vertical intercept, however, is 0.011 [s2]. What might this translate to for a measurement of the length offset systematic in ...

*April 29, 2014 by Anonymous.*

**early childhood education**

a childs ability to jump for distance is an example of a)agility b)flexibility c)explosive power d)reaction time i put b am i correct a child who has to struggle to climb into a chair is confronting an.......... hazard a)biological b)physical c)ergonomic d)environmental i put ...

*November 1, 2011 by abby*

**computers**

create a program that will input two quizzes and will compute for sum,difference,product,quotient and average using printf and scanf. create your own design.

*August 21, 2014 by david*

**Math.**

1. What data are represented by the stem-and-leaf plot below? 3 | 7 8 9 4 | 1 3 7 5 | 2 4 Key: 4 | 1 means 41 a. 37, 38, 39, 41, 43, 47, 52, 54 b. 73, 83, 93, 14, 34, 74, 25, 45 c. 7, 8, 9, 1, 3, 7, 2, 4 d. 37, 38, 39, 14, 34, 74, 25, 45 2. Find the mode and the median of the ...

*March 5, 2014 by Bonnie*

**MATH**

1. What data are represented by the stem-and-leaf plot below? 3 | 7 8 9 4 | 1 3 7 5 | 2 4 Key: 4 | 1 means 41 a. 37, 38, 39, 41, 43, 47, 52, 54 b. 73, 83, 93, 14, 34, 74, 25, 45 c. 7, 8, 9, 1, 3, 7, 2, 4 d. 37, 38, 39, 14, 34, 74, 25, 45 2. Find the mode and the median of the ...

*March 14, 2016 by HELP ASAP*

**Chemistry Help!!**

Types of Reactions Worksheet Balance the following equations and indicate the type of reaction taking place: 1) 2 NH3 + 3 I2 N2I6 + 3 H2 Type of reaction: ____________________ 2) 3 Ca(OH)2 + Al2(SO4)3 3 Ca(SO4) + 2 Al(OH)3 Type of reaction: ...

*December 8, 2014 by Theresa*

**math/algebra**

Is this correct -3a^2b/35a^5 * 14a^3b^2/-9b^4= -42ab/-315a^5b^4 you need to simplify and i belive your exponents on your variables are wrong _______________________________________ try again *** i got (2a^3)/(15b^2) sorry i forgot something, looking back at my work I now get...

*August 19, 2007 by dee*

**Algebra II**

One method of irrigating crops is called the center picot system. This system rotates a sprinkler pipe from the center of the field to be irrigated. Suppose a farmer places one of these units at the center of a square plot of land 2500 feet on each side. With the center of ...

*April 1, 2014 by Alexis*

**Algebra II**

A student is asked to solve b2 + a2 = c2 for a and gives the following solution. Assume all variables represent positive Real Numbers. b2 + a2 = c2 pb2 + a2 = pc2 b + a = c a = c-b Explain the mistake(s) made by the student and provide the correct solution.

*July 9, 2014 by Kiara*

**Ms.Sue?Sorry To Bother You,I Got SOme New Answers!**

120 g = 0.12 kg [DONE] 0.44 kg = 440 g [ is it correct? ] 1.00600 kg = 1,006,000 mg [ correct?] 0.009 kg = 9000 mg [DONE] 0.2 mg = 0.002 g [correct?] 8.6 kg = 0.0086 [correct?] 800 g = 0.8 [correct?] 1.7 kg = 0.0017 [correct?] 6 200 000 mg = 6.2 kg [correct?] thanksss

*September 16, 2009 by Cheyenne*

**Linear Equations**

Kathleen is ordering wraps from a local sandwich shop. The total charge includes a set delivery fee plus the price per wrap. Each rap is the same price. Kathleen asks about specific orders and is given the following info: If she orders 20 wraps, the total cost will be $100 If ...

*April 12, 2015 by Kimbo*

**Math**

Explain how solving a linear inequality is similar to solving a linear equation. Explain how solving a linear inequality is different from solving a linear equation.

*February 8, 2011 by Cindy*

**Math HELP! Ms.Sue**

Gather a set of data. Choose a small sample, between 10 and 20 pieces of data, and a simple value to measure, such as the ages of visitors in a park, or the number of text messages each person in your family receives in one day. Choose a display for your data, such as a ...

*May 1, 2015 by Anon101*

**Algebra**

1. Create the indicated algebraic expression. Use descriptive variables. The length of a rectangular lawn is 6 ft more than three times the width of the lawn. Express the length of the lawn in terms of the width. A. 3+w+6 B. 3(w+6) C. 6w+3 D. 3w+6 For 1 I thought it was B? 2. ...

*January 16, 2013 by Krissy*

**statistics**

I need to figure out the variables one independent and the other dependent from the data set. I forgot what a data set is and what the variables are I have the paper I m supposed to be looking on for it but have no idea what i m looking for.

*September 12, 2015 by Anoymous*

**math, beginning algebra**

can someone correct this for me. Directions: Solve each literal equation for the indicated variable. 2x + 3y = 6 (for x) Linear Equation My answer: X = 3-1.5y yes.

*December 20, 2006 by jasmine20*

**Math**

State whether the equation y=10^3x represents a linear, quadratic, or exponential function. Tell how you decided. I think it is exponential, is this correct

*November 2, 2009 by Chris*

**check**

select the correct definition of the word linear A)***arranged in a line B)division into lines C)to outline D)location of a line

*March 31, 2010 by henry*

**statistics**

The heights in centimetres of men in a sample selected at random may be modelled by a normal distribution with mean 180.5 and standard deviation 11.3. 1. Choose the option that is closest to the value above which 30% of the heights of men will lie. Options for Question1 A 174....

*May 9, 2011 by albert*

**chemistry**

I have two questions that I really don't understand. The first one is: A reaction proceeds with delta H=-10kJ/mol. The energy of activation of the uncatalyzed reaction is 150kJ/mol, whereas it is 100kJ/mol for the uncatalyzed reaction. How many times faster is the catalyzed ...

*March 5, 2012 by kathryn*

**double integral**

1. Sketch the region of integration & reverse the order of integration. Double integral y dydz... 1st (top=1, bottom =0)... 2nd(inner) integral (top=cos(piex), bottom=(x-2)... 2. Evaluate the integral by reversing the order of integration. double integral sqrt(2+x^3) dxdy... ...

*March 11, 2011 by Michelle*

**chemistry**

Baking soda is sodium bicarbonate (NaHCO3). When you heat baking soda, it breaks down into sodium carbonate powder (Na2CO3), water vapor, and carbon dioxide. The enthalpy of this reaction is 129 kJ. a. Write a correct, balanced thermochemical equation for this reaction. (...

*April 16, 2014 by Anonymous*

**Physics**

Kyle wishes to fly to a point 450 km due south in 3 hours. A wind is blowing from the west at 50 km/hr. Compute the proper heading and speed that Kyle must choose in order to reach his destination on time.

*December 9, 2009 by Jordan*

**UOP**

The final project for HSM 240 is a 1,750- to 2,100-word proposal paper on a social program that you create. Pretend that you have the power and capacity to create an agency or organization and decide to create a new social program. You need funding and decide to write to a ...

*November 21, 2010 by Tina*

**Chemistry**

X(g) + 2 Y(g) + 2 Z(g) -->3 M(g) + 2 N(g) I've already found the orders for the following to be: X is 2nd, Y is 1st, Z is 0 and overall of course is 3. But I am confused about the below question. I initially guess that No it doens't occur in one step..but the reasons why I ...

*April 1, 2010 by Val*

**Math - hw check**

The admission fee for student is $8 and the admission fee for Adult is $15. In one hour, 12 adults and students enter the museum and a Total of $131 in admission was paid. Write a linear system to model this problem and solve this problem graphically. Check you answer by ...

*April 2, 2015 by Ray*

**Civics**

The United States decided to help South Korea mainly because of which of the following? A need to create more equal trade * This is the one i choose A need to keep a military base in Asia A need to keep the Soviet Union out of Asia A need to protect the American economy

*February 19, 2016 by Marshall*

**Grammar**

For each of the following sentences, choose the correct pronoun from the pair given in parentheses. 1. We are going to play stickball in the street. (Who, Whom) would like to play first base? 2. The best pitcher would be (who, whom)? 3. (Who, Whom) would you like to be catcher...

*May 11, 2013 by Anonymous*

**mathematics**

THE 1ST, 3RD AND 9TH TERM OF A LINEAR SEQUENCE A.P ARE THE 1ST THREE TIMES OF G.P. IF THE 7TH TERM OF THE LINEAR SEQUENCE IS 14. CALCULATE (A) 20TH TERM OF THE LINEAR SEQUENCE (B) SUM OF THE 1ST, 12TH TERM OF THE G.P

*March 5, 2015 by AYOMIDEY*

**Math**

Ok, so my math teacher didn't tell us ways to do this faster, and it's late enough as it is so I don't want to be up all night doing homework. D; *Note: A permutation is where the order matters. A combination is where it doesn't. Find the number of permutations. 1.Ways to ...

*February 14, 2008 by Who cares?*

**chemistry / help please**

For each reaction,which ion in the precipitate was responsible for the color 1-reaction of Sodium Hydroxide and Copper(II)Sulfate 2-reaction of Sodium Sulfate and Barium Chloride. 3-reaction of Sodium Hydroxide and Iron(III)Sulfate. 4-reaction of Sodium Hydroxide and Nickel(II...

*May 10, 2012 by Marie*

**chemistry(check my answer)**

The overall rate of a chemical reaction is determined by a)the slowest step in the reaction mechanism. b)the fastest step in the reaction mechanism. c)ΔG for the overall reaction. d)the last step in the reaction mechanism. e)the first step in the reaction mechanism. is it...

*May 16, 2010 by bme1*

**Physics**

The linear absorption coefficient for 0.05 nm x-rays in lead and in iron are respectively, 5.8x10(4) /m and 1.1x10 (4) /m. How thick should an iron shield be in order to provide the same protection from these x-rays as 10 nm of lead?

*March 20, 2011 by amy*

**Physics**

The linear absorption coefficient for 0.05 nm x-rays in lead and in iron are respectively, 5.8x10(4) /m and 1.1x10 (4) /m. How thick should an iron shield be in order to provide the same protection from these x-rays as 10 nm of lead?

*March 22, 2011 by Jennifer*

**English/Writing**

5. Choose one of the topics listed below and write a five-sentence paragraph using chronological order to arrange the details of the paragraph. a. Signing on to my homepage is simple. b. Writing a paper takes patience and time. c. Let me explain how to make my favorite ...

*November 9, 2010 by jackie rios*

**Science**

I am working on a year 10 physics assignment on road science. I am trying to figure out the reaction distance of a car with: Skid marks = 24m Reaction time = 1 sec Decelaration rate = 6m/sec I have many formulas in my book and am unsure of which one to use and what the correct...

*May 16, 2008 by Melody*

**geometry**

a rectangle plot of land is to be seeded with grass if the plot is 22m x 28m and 1 kg bags of seed is needed for 85 m2 of land how many bags of seed are needed

*January 8, 2011 by crystal*

**MATH**

IF 810 BOYS WEED A PLOT OF LAND IN 4 YEARS, HOW MANY YEARS WOULD IT TAKE 1080 BOYS TO WEED THAT SAME PLOT OF LAND?

*April 4, 2014 by EMMANUEL*

**A**

You have just landed your first summer job and your boss has told you that you can choose from one of 3 pay structures for the first week (7 days) that you work there. And after the first week, your pay will be frozen at the final rate for the remainder of the summer. • ...

*August 5, 2016 by A*

**Algebra 1- Math**

At the ocean's surface the pressure is 1 atmosphere. At 66 feet below seal level, the pressure is 3 atmosphere. The Relationship between the pressure and the depth is linear. a. find the independent and dependent variable. b. create 2 ordered pairs. c. find the slope. d. ...

*December 14, 2012 by Tony*

**Math**

Fantasia Florist Shop purchases an order of imported roses with a list price of $2,375 less trade discounts of 15/20/20. What is the dollar amount of the trade discount? Answer: 1306.25 4. Using your answer to the question above, what is the net dollar amount of that rose ...

*May 20, 2013 by Ann*

**Grammar**

For each of the following sentences, choose the correct pronoun from the pair given in parentheses. 1. We are going to play stickball in the street. (Who, Whom) would you like to play first base? 2. The best pitcher would be (who, whom)? 3. (Who, Whom) would you like to be ...

*May 8, 2013 by Anonymous*

**algebra**

2x+6y=60 in determinng the x and y intercept I came up with the order pair 0,-10 Is this correct?

*April 28, 2008 by C*

**Math**

Arrange the fractions in ascending order: 7/22, 2/5, 9/24 My answer is: 2/5, 7/22, 9/24 Is this correct?

*July 16, 2009 by B.B.*

**Math**

Put these numbers in increasing order: -2, 13, 0, -22. My answer is: -22, -2, 0, 13. Is this correct?

*July 19, 2009 by B.B.*

**Math**

Which of the following shows the correct order of the numbers below? 2 (1) 2 - - 0.45 2 , 3 , 2 A) (1) 2 - < 0.45 < - 2 , 3 2 B) (1) < 2 < 0.45 - - 2 3 2 C)0.45 < (1) < 2 - - 2 3

*January 7, 2010 by george*

**homework help**

which of the following are in the correct size order? a) nm, um, cm, mm, m b) m,um,cm, nm, mm c) um,nm,mm,cm,m d) nm,um,mm,cm,m e) none of the above

*September 26, 2012 by robbie*

**Math 201**

The pricd of a home in CA was $100,000 in 1985 and rose $160,000 in 1997. a. create two models, f(t) assuming linear growth and g(t) assuming exponential growth, where t is the number of years after 1985. *round coefficient to three decimal places when necessary. f(t)=_______ ...

*October 12, 2016 by Jonas*

**Algebra Word Problem**

Peanuts are selling for $2 per pound, and cashews are selling for $5 per pound. How much of each type of nut would be needed to create 20lb. of a mixture that would sell for $2.75 pre puund? Use the variables, p and c, to setup a system of equations. Solve. p=numver of pounds ...

*November 16, 2008 by pj*

**math**

Ex 3: 4x-7<2x+5 4x-7-2x<2x-2x+5 2x-7<5 2x-7+7<5+7 2x<12 2x/2<12/2 x< 6 Note I did not switch the order of the inequality here since I divided by a positive number. Multiplying or dividing by a positive number does not change the order of the inequality. So...

*September 22, 2010 by Anonymous*

**Chemistry**

A reaction proceeds with ∆ H = 40 kJ/mol. The energy of activation of the uncatalyzed reaction is 120 kJ/mol, whereas i t is 55 kJ/mol for the catalyzed reaction. How many times faster is the catalyzed reaction than the uncatalyzed reaction at 25°C?

*February 27, 2015 by Jessica*

**College algebra!**

For the linear function f(x) = 5x + 3 (a) Determine the slope and y-intercept (b) Use the slope and y-intercept to graph the linear function. (c) Determine the average rate of change of the function (d) Determine whether the linear function is increasing, decreasing, or constant.

*March 15, 2013 by Jenn*

**Chemistry**

Which of the following accurately shows the correct terms for the two sides of a chemical equation, correctly placed to the left or to the right where they belong, and also shows the correct symbol that is written between them? Choose a,b,c, or d. ** I believe the answer is A...

*July 8, 2008 by Mickeyv*

**math**

Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for the specified variable. A student took out two loans totaling $10,000 to help pay for college expenses. One loan was at 8...

*February 6, 2010 by P.Smith*

**english**

An important purpose of myths is A. to create interesting entertainment and exciting story plots. B. to illustrate the connections between modern times and the past. C. to build an understanding of the past and teach lessons for the future. D. to establish human values and ...

*November 23, 2013 by orpheus*

**Physics**

4th order dark fringe and 2nd order bright fring spaced 2.5cm apart appear on the screen placed 1 m behind the double slit. What is the spacing of the slits if the waveleght of incident light is 500nm? x=2.5cm=.025m L=1m wavelegth= 500nm = 5x10^-7m d=? x/L=wavelength/d d= (...

*April 22, 2008 by Andrea*

**English**

What are some good websites that help you create your own personalized avatars?? I need to create my own avatar for English class, but I can't find a good website. I need a website that helps create awesome avatars, such as those in video games. Any suggestions??/

*February 6, 2012 by Anonymous*

**Statistics**

When is it appropriate to draw a causal connection between two measurement variables? In other words, what conditions must be met in the study and in the analysis to show a causal relationship? My answer : 1.There needs to be a reasonable explanation of cause and effect. 2.The...

*April 9, 2014 by Mea*

**chemistry**

Which half-reaction represents reduction? Choose one answer. a. Cu → Cu^+2 + 2e- b. Fe^+2 → Fe^+3 + 1e- c. Ag^+1 + 1e- → Ag d. Al → Al^+3 + 3e-

*May 20, 2010 by Tim*

**physics**

what is the correct equation for the reaction of HBr with Ca(OH)2-

*December 15, 2008 by christian*

**chemistry**

If the half-life of a first-order decomposition reaction is 24.2 minutes, how long will it take for 10.0 moles of the reactant to decompose so that only 2.5 mol remains?

*September 4, 2012 by Josh*

**chemistry**

Arrange the three metals in order of their relative strengths as reducing agents, placing the strongest first. Write each metal as a half reaction.

*March 12, 2014 by Brooke Deemer*

**ALGEBRA**

You have just landed your first summer job and your boss has told you that you can choose from one of 3 pay structures for the first week (7 days) that you work there. And after the first week, your pay will be frozen at the final rate for the remainder of the summer. Option 1...

*August 5, 2016 by Anonymous*

**Algebra**

Solve the following linear inequality graphically. x+2y<4 x-y<5 Each inequality is satisfied in a particular region of an x,y plot. The first inequality is satisfied below the line y = -x/2 + 2, for example. The second inequality is satisfied above the line y = x + 5. ...

*June 3, 2007 by Graphing Help!*

**Math**

Can someone answer a question similar to a and b so I can use as an example. Consider the following binomial random variables. (a) The number of tails seen in 47 tosses of a quarter. (i) Find the mean. (Give your answer correct to one decimal place.) (ii) Find the standard ...

*June 1, 2013 by Nora 512*

**Calculus**

Differentiate. y= u(a cos u + b cot u) I am not sure if this correct. I was not sure whether to leave the variables as are or where the negatives should be placed? (u)*(- a sin u - b csc^2 u) + (a cos u + b cot u)*(1)

*October 24, 2010 by CMM*

**math**

every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time. can you find the correct order to arrive at the finals totals shown. only using 4 8 3 5 and * + - to make 31 15 20 21 9 17 11 27 ...but you only can ...

*December 15, 2009 by Katherine*

**Economics**

In a regression analysis, suppose there is, in fact, no seasonal pattern to sales, and the trend line is estimated using dummy variables to account for seasonality. What effect would this have on the estimation? My guess is that it wouldn't affect the estimation....am I ...

*January 29, 2008 by Devin*

**Spanish**

Please help! Choose the correct form of the verb comer (to eat) that agrees with the subject ellos. a. comes b. comen c. como d. come

*October 16, 2015 by mistysmoke*

**Chemistry**

I have to write the balanced equation for the reaction between hydrochloric acid and zinc metal.I came to the answer of: HCl+Zn(s)-->H(g)+ ZnCl Can someone tell me if this is the correct balanced equation for this reaction? No it isn't but it's close. The gas hydrogen ...

*April 23, 2007 by Chrissy*

**Math**

You have 192 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area. Find the largest area that can be covered and the length of each side

*March 7, 2013 by Ryan*

**English**

Choose the correct form for each phrase. 1. the budget for this month this months budget this month's budget this months' budget this months's budget 2. the schedule of the doctor the doctor's schedule the doctors schedule the doctors' schedule the doctors's schedule Select ...

*May 16, 2013 by Kelly*

**Math/geometry**

Two angles are complementary.the second angle has 6 more than three times the measure of degrees as the first one. Find the measure of each angle using an equation. Define your variables. I didn't get what the two variables should be... And how I'd write the equation but I k ...

*April 12, 2016 by Sonja R*

**Chemistry**

Administratium bromide (AdBr) decomposes readily at temperatures exceeding 37°C. The figure below shows how the rate of reaction varies with the concentration of AdBr. The rate, r, is in units of M s-1 and the concentration of AdBr, c, is in units of M (mole L-1). The slope ...

*November 29, 2012 by Odesa*

**Chemistry**

what is the rate of a first-order reaction that has a reactant concentration of 1.1M and a rate constant of 0.14/s?

*May 1, 2013 by George*

**Chem**

K so this time it is basic concept and I am suppose to guess what happens, so I've written the cause but I have also written my answer to the reaction and effect. so for: A + B <=> C stress: A is increased reaction: forward effect:[A]increased [B] inc [C]inc Stress: B is...

*May 16, 2007 by Jason*

**Physics (Rotation)**

In the figure, wheel A of radius rA is coupled by belt B to wheel C of radius rC. The angular speed of wheel A is increased from rest at a constant rate α. Find the time needed for wheel C to reach angular speed ω assuming the belt does not slip. (Hint: If the belt ...

*April 12, 2014 by Anon*

**To Steve**

Sorry here is completed question A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? 1- Randomly choose a marble don't replace it then randomly ...

*March 29, 2014 by Matt*

**Physics**

What are the independent and dependent variables in the following scientific investigation? Controlled variables are also being used in this investigation. Identify the controlled variables as well. A chemistry student is conducting an experiment to determine if table salt ...

*August 5, 2011 by Elizabeth*

**chemistry help**

During a chemical reaction, if Q = K, what can be said about the reaction? A. The reaction still proceeds in both directions, but the net result is that the reactant and product concentrations do not change. B. The amount of product is always equal to the amount of reactant. C...

*September 10, 2016 by emma*

**chemistry**

During a chemical reaction, if Q = K, what can be said about the reaction? A. The reaction still proceeds in both directions, but the net result is that the reactant and product concentrations do not change. B. The amount of product is always equal to the amount of reactant. C...

*September 11, 2016 by jessie*

**Chemistry**

The overall rate of any chemical reaction is most closely related to a) the number of steps in the reaction mechanism b)the overall reaction c) the fastest step in the reaction mechanism d)the slowest step in the reaction mechanism e) the average rate of all the steps in the ...

*July 21, 2010 by Bobby*

**investing 2-16**

Entering an order to sell stock at $17 when the bid is $18–$19 is an example of a A. market order. B. short sale. C. margin payment. D. limit order. D seems like the best answer

*February 22, 2009 by Johnny*

**Math**

Could someone please help? I can't find the definitions in my book anywhere. Thank you! 1. Given: <2 = <4, m<2 = 110 Proof: m<3 = 70 <2 = <4, m<2 = 110 Given m<2 = m<4 Definition of congruent angles m<4 = 110 b._______ <3 and <4 are a linear...

*October 13, 2015 by Tim*

**Algebra**

a farmer fences off a small.rectangular plot of land thay is 60 feet by 100 feet. within that area, a garden is planted and surrounded by a walkway of uniform width. how wide is the walkway if the area of the planted area is one half of the area of the plot?

*December 1, 2015 by Thomas*

**graph linear equations**

I have tried going through the TI-84 plus manual that came with my calculator, so that I can graph this linear equation: 3x+4y=-16. I have not been able to graph linear equations. Can someone please tell me how to enter this equation properly into my calculator? I have solved ...

*November 17, 2016 by Anonymous*

**Inter. Algebra**

what is the answer to 12x squared y cubed /2xy squared +6xy * y squared +6y+9 /3y cubed +9y squared? You have not written an equation, only an algebraic function, with two variables. You need to add parentheses to clarify the order of operations. There is no "answer". It can ...

*December 2, 2006 by Andrea*

**Orgo Lab**

Recrystallization is often used at the end of a synthesis. Choose the most accurate answer/s to explain the purpose of recrystallization and how it is done effectively? Note there may be more than one correct answer. 1.Dissolve the crude product in the minimum amount of cold ...

*October 19, 2014 by Anonymous*

**Alg 2**

Today we learned how to solve systems of equations with 3 variables, however my teacher didn't go over how to do a problem where not every single equation in the system has the 3 variables. Can someone point me to a place that explains this? the kind of problem im talking ...

*October 5, 2012 by john*

**Grammar**

which is the correct word order? She only said.. or She said only Any rules for word order?

*July 13, 2014 by Anonymous*

**Chemistry**

In an endothermic reaction at equilibrium, what is the effect of raising the temperature? The reaction makes more products the reaction makes more reactants*** the reaction is unchanged the answer cannot be determined

*May 4, 2016 by Jordan*

**chemistry**

NH4NO3(s) NH4+(aq) + NO3−(aq) In order to measure the enthalpy change for this reaction above, 1.07 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8°C and the final temperature (after the solid dissolves) is 22.4°C. ...

*November 16, 2012 by DeeDee*

**math**

Imagine you are the owner of a pizza shop that offers three different types of crusts, seven different toppings, and three different cheeses. Create an advertisement for your shop with three lists: one for crusts, another for toppings, and a third for cheeses. In your ...

*June 2, 2015 by amanda*

**Chemistry**

The reaction between 0.045 g of calcium with an excess of water was carried out in an ice calorimeter as used in this lab. The volume of water in the calorimeter decreased by 0.18 mL during the reaction a) Write the equation for the reaction which occurs. Is it a redox ...

*June 3, 2009 by Sean*

**chem**

1) When a mixture of potassium chlorate and an appropriate catalyst is heated in an open test tube, potassium chloride and oxygen gas are produced. This reaction is not reversible, because a. the system reaches equilibrium b. the reaction does not go to completion c. the ...

*February 1, 2012 by HEATHER*

**chemistry**

In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ½O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...

*December 18, 2013 by Danny Simone*

**calculus**

In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ½O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...

*December 18, 2013 by Danny Simone*

**statistics for health research**

1.A study is conducted to determine the factors that affect the increased maternal mortality rates in Kenya. Establish the variables (at least 5 variables) that you would use to conduct the study. State your expected results and explain how you will apply Correlation and ...

*June 16, 2014 by maureen*

**Chemistry**

Before a chemical reaction reaches equilibrium, A. the reaction rates of the reactants and products increase. B. the reaction rate of the reactants increases and the reaction rate of the products decreases. C. the reaction rates of the reactants and products decrease. D. the ...

*August 9, 2015 by soco*