Number of results: 17,628

**chemistry plz help!!!**

are the following true for the element gallium? if they are false make them true. oxide more basic than Al203 oxide less basic than Mg(OH)2 hydroxide soluble in acid hydroxide soluble in base sulfide precipitates with H2S sulfide not soluble in (NH4)2S will form EaCl3, Ea2S3, ...

*November 18, 2007 by Amanda*

**chemistry**

are the following true for the element gallium? if they are false make them true. oxide more basic than Al203 oxide less basic than Mg(OH)2 hydroxide soluble in acid hydroxide soluble in base sulfide precipitates with H2S sulfide not soluble in (NH4)2S will form EaCl3, Ea2S3, ...

*November 18, 2007 by Amanda*

**Science URGENT**

Hi, I am working on stoichiometry and limiting reactant problems. I have worked through examples in my book and I did them right and can solve for the excess, however there is one problem in the book that has confused me. I don't understand why they identified the limiting ...

*March 12, 2014 by Alexa*

**Algebra 1**

1) Find the possible values of a, if the distance between the points is 5, and the coordinates are (1, 1) and (4, a). I don't know how to solve this one. 2) in a right triangle the length of the hypotenuse is 14 and the length b of one of the legs is 8. find the length a of ...

*May 31, 2013 by Eri*

**Chem**

Some very effective rocket fuels are composed of lightweight liquids. The fuel composed of dimethylhydrazine (CH3)2N2H2 mixed with dinitrogen tetroxide was used to power the Lunar Lander in its missions to the moon. The two components react according to the following equation...

*February 24, 2009 by Samantha*

**English Answer Check**

Do my answers to these questions make sense? These questions regard the poem "Jabberwocky." 1. One critic said that "Jabberwocky," despite its odd language, tells a story like many legends of knights and dragons. Do you agree? Why or why not? A: I agree with this critic’s ...

*March 2, 2014 by Anonymous*

**Math**

How do you subract the fraction 2/5 and 4/9? Form a common denominator and subtract the numerators, like this: 20/45 - 18/45 = (20-18)/45 = ? I assume you wanted 2/5 subtracted from 4/9, not the other way around. If you want 2/5 - 4/9, the sign changes.

*December 25, 2006 by Sanjana*

**Art**

I choose a painting to write about and I am having the hardest time trying to see the form, color, space and much more. Is there anyone that knows this kind of stuff?

*September 4, 2007 by Stephanie*

**math**

a set of 20 cards is numbered 1,2,3,... ..20. Suppose you pick a card at random without looking. Find the probability of each event. Write as a fraction in simplest form. P(3 or 13)

*March 25, 2008 by Jordan*

**Algebra II/Trig**

solve each inequality: 1-2t>-5 and the answer is: t<3 because you subtract one form both sides and get -2t>-6 and that's really positive and divide by 2 and that's where the three comes from ... but why does the > symbol change to < ?!

*September 10, 2008 by Mary*

**accounting**

An employee who is married and has two children submits a W-4 form to his employer indicating that he is single and claims zero deductions. Is this action ethical, unethical, or illegal?

*January 12, 2009 by China*

**accounting**

An employee who is married and has two children submits a W-4 form to his employer indicating that he is single and claims zero deductions. Is this action ethical, unethical, or illegal?

*January 15, 2009 by China*

**math**

x = 3 - y^2 y = x - 3 Find the points of intersection. If someone could even get me to the point where it gets written in general form (both equations set to 0..) I would be forever grateful.

*January 20, 2009 by strawerryfields*

**calculus**

a piece of wire 12 inches long is to be used to form a square and or a circle.determine a function that expresses the combined area of both figures.what is its domain?

*August 26, 2011 by natasha*

**American Literature**

Which of the following genres is defined by theme (what happens) rather than form (how the words are put together)? A. Drama B. Comedy C. Satire D. Tragedy E. Sonnet

*April 2, 2009 by tim*

**grammar**

If miriam _______(win) the talent contest, she ______(become) a famous singer. Now she´s a big star. (past model form) please.

*July 16, 2009 by mike*

**pre-calculus**

Determine the center and the radius of the following circle: x^2+y^2+8x-2y=8 so I figured I'd use completing the square after putting it in standard form: (x^2+8x)+(y^2-2y)=8 I'm not sure where to go from here.

*September 18, 2009 by muffy*

**chemistry**

simple ion does each of the following elements most commonly form? a. Sodium ……………. b. Iodine ..…………. c. Potassium .…………… d. Calcium .…………… e. Sulfur .…………… f. Magnesium .…………… g. Aluminum .….………. h. Nitrogen...

*November 10, 2009 by dido*

**math (please check my work)**

find the equation (in slope intercept form) the line passing through the points with the given coordinate (-1,-1) (-3,-3) -3-(-1)/-3-(-1)=2 y+3=2(x-(-3) y+3=2x-6 -3 -3 y=2x-9 is what i got is this correct?

*February 23, 2010 by jerson*

**5th GRADE**

Write fourteen thousand and six tenths in standard form. I wrote: 14000.06 Another site told me that it was 0014.06. Which is correct? Please advise, Thank you

*March 5, 2010 by MATH PLEASE HELP*

**Math 12**

I need to write this parabola question 2(x+3)^2 -1 in general form. Not sure how to do it. Do I sqaure whats in brackets first? x^2 + 6x +9 then *by 2 so 2x +12x +18 - 1 = 0 Would this be the answer or am I doing it wrong? Any help appreciated.

*March 16, 2010 by Ray*

**Physical Science**

11. Chromium is produced by reacting its oxide with aluminum. If 76g of Cr2O3 and 27g of Al completely react to form 51g of Al2O3, how many grams of Cr are formed?

*March 28, 2010 by Zak*

**History Check**

Was Thomas Jefferson the person who said this: "We the people of the United States, in order to form a more perfect Union . . . " ? Just making sure

*August 28, 2010 by Amy~*

**math**

A total of 8 058 044 651 Web pages were searched by Google by the end of 2004. Express this number in a scientific notation and in expanded form.

*September 23, 2010 by vanessa*

**Math**

A total of 8 058 044 651 Web pages were searched by Google by the end of 2004. Express this number in a scientific notation and in expanded form.

*September 23, 2010 by Vanessa*

**Algebra**

Add and subtract the rational expressions as indicated. Be sure to express your answer in simplest form ((9)/(7x)) + ((1)/(2y)) -1 I got an aswer of (16y)/(7x+2y+1)) but when I submit it shows me as wrong. Can anyone help, thanks

*September 28, 2010 by Alex*

**Health**

Why is it important to get the right amount of each vitamin and mineral? Like a general answer? would it be for your body to work properly Minerals help form healthy bones

*October 10, 2010 by Amy*

**chemistry**

Consider HA- the intermediate form of a diprotic acid. Ka for this species is 10-4 and Kb is 10-8. Nonetheless, the Ka and Kb reactions proceed to nearly the same extent when NaHA is dissolved in water. Can anyone explain that?

*October 12, 2010 by agnes*

**chemistry**

What volume (in Liters) of oxygen must react to form 17.0L of carbon dioxide according to the following balanced equation: 2CO(g) + O2(g) --> 2CO2(g) is this correct C G02 2

*October 16, 2010 by amber*

**Chemistry**

60.0 g of benzene is mixed with 135g of bromine to form bromobenzene according to the following reactionC6H6+Br2-C6H5Br+HBr which is the limiting reagent and what is the theoretical yield

*October 25, 2010 by Stark State*

**Math(pre-Calculus)**

Find the standard form of the equation of the circle. 3(x+2)^2 + 3(y-1)^2=18 so i used this formula r^2 = (x+h^)2 + 3(y+k)^2 i just plug in the number but what do i do with the 3's outside of the parenthesis or i have to do something else...

*October 28, 2010 by K.C*

**math/pre-algebra**

how do u change 0.015 from standard form to scientific notation [ please don't charge me money im only 11 yrs old trynna get help with my homework ]

*November 6, 2010 by Daneeka*

**Spanish**

for the verbs ending in car, gar, zar i thought you only change the "yo" form but i learned that for conjugar becomes conjuguen. would that be in the present and not preterite?

*December 16, 2010 by Amy*

**college algebra**

Perform the indicated operation(s) and express the result in standard form. Leave answers in terms of square roots (do not use decimals). (-9-sqrt-3)^2

*September 13, 2011 by john*

**Algebra II**

I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? (x-2)(x+2)(x-4)original problem 1.x^2 + 2x-2x=x^2-4) 2. (x^2-4)(x-4) 3. x^3-4x^2-4x+16=0

*September 22, 2011 by Jessica*

**Chemistry 105**

Consider the following chemical reaction. 2H2O(l) -->2H2(g)+O2(g) What mass of H2O is required to form 1.6 L of O2 at a temperature of 330 K and a pressure of 0.954 atm?

*October 23, 2011 by JULIE*

**Adverbs and other parts of speech**

which one of the following words phrases if the superlative form of an adjective? A.Less B.Slower C.Most active D.more rapidly

*November 4, 2011 by Jennifer*

**algebra**

What number must be added to each of the numbers 0, 8, and 32 so that they form consecutive terms of a geometric sequence? I don't understand what the question is asking first of all. The answer is 4. Help is much appreciated.

*November 28, 2011 by jason*

**Language Arts**

Having trouble on this one too. Need to say the correct verb form either lay or lie. The horn has _____________ there ever since.

*December 14, 2011 by Brandi*

**human resources**

Imagine your business has grown to $3M+ in sales and 50+ employees. Determine if another form of ownership would be more appropriate. Explain the reasoning behind your decision

*January 25, 2012 by meka*

**Pre-Cal**

Convert the given exponential function to the form indicated. Round all coefficients to four significant digits. f(x) = 9e^3x; f(x) = Ab^x How do i solve the equation with this formula? Thanks

*February 29, 2012 by Anne*

**Math**

Find the volume of a tank in the form of horizontal cylinder whose radius is 2.6 yd, and length is 8.4 yd. report your answer to the nearest tenth of a cubic yard, and use 3.14.

*March 7, 2012 by Sheilah*

**AP CHEMISTRY**

Suppose that a 15-mL sample of a solution is to be tested for I- ion by addition of 1 drop (0.20 mL) of 0.30 M Pb(NO3)2. What is the minimum number of grams of I- that must be present for PbI2(s) to form? (Ksp = 7.9 10-9)

*March 12, 2012 by HELP PLEASE to DrBob222*

**Social Studies**

Before 1910, the most popular form of public entertainment was A. band concerts. B. baseball. C. ballroom dancing. D. viewing motion pictures. Is it C?

*June 1, 2012 by Abby*

**Social Studies**

Before 1910, the most popular form of public entertainment was A. viewing motion pictures. B. band concerts. C. ballroom dancing. D. baseball. Is it C?

*August 15, 2012 by Sara*

**7th grade math help Ms.Sue ratios please**

Write each ratio in simplest form. 1. 28 seconds / 2 minutes 2. 22 in. / 3 feet 3. 36 cm. / 132 cm. Can you help me i have NO IDEA how to solve these thanks

*October 25, 2012 by Delilah*

**lit**

the major elements of drama and distinguishes the form from other genres like the short story and poetry. Using the play Riders to the Sea (Synge)

*January 10, 2013 by Anonymous*

**geomerty**

The hexagon GIKMPR and FJN are regular. The dashed line segments form 30° angles. Find the image of after a rotation of 300° about point O.

*March 17, 2013 by TThias*

**math**

will smeone please help me solve this question. Simplify the expression. Write your answer in the lowest terms ans leave it in factored form. __3y__ + ___4__ y(4y-1) 4y-1

*April 4, 2013 by Michael*

**chemistry**

Write the balanced chemical equation for the Habor-Bosch process, that is, the combination of nitrogen and hydrogen to form ammonia, NH3. Phase symbols are optional.

*April 17, 2013 by lee*

**kalif**

Which writer and poet developed the style and form of sonnets in his work Il Canzoniere? Francesco Petrarch William Shakespeare Thomas Wyatt Edmund Spenser

*May 28, 2013 by kalif*

**organic chemistry**

for each of the following compounds, draw the form in which it will predominate at ph=3, ph=6, ph=10, and ph=14. a)CH3COOH b)CH3CH2NH3 c) CF3CH2OH please explain how to get answers. my book does not give clear examples.

*May 30, 2013 by julia*

**math calculus**

The volume of the solid obtained by rotating the region bounded by y=x^2−2x and y=x about the line y=9, has the form a/bπ, where a and b are positive coprime integers. What is the value of a+b?

*July 17, 2013 by andy*

**trig**

Find all solutions of cos (x) + 1/2 sec (x) = -3/2 in the interval (2pi, 4pi) (Leave your answers in exact form and enter them as a comma-separated list.)

*July 31, 2013 by Holly*

**Trigonometry**

Find all solutions of 4(sin(x)**2)-8cos (x) -8 = 0 in the interval (2pi, 4pi). (Leave your answers in exact form and enter them as a comma-separated list.)

*July 31, 2013 by Holly*

**6th grade social studies**

I need help unscrambling these letters to form two words: inenidj tcain They go along with the phrase ______ _____and Persia.

*February 24, 2014 by Jack*

**Sociology / Anthropology Help Please!!!**

Why is art created? Give five examples of human creative expression, including one form that you personally practice or enjoy.

*May 9, 2014 by YULCHANG*

**Pre-Calculous**

Convert Q = 17(0.887)^1.2t to the form Q = ae^kt Round all calculated values to three decimal places Q = ? My answer was 17e^-0.099t, but I do not think that it is correct

*October 3, 2014 by sarah*

**Science**

True/false Earth's atmosphere oceans and continents began to form during the first several hundred million years of the Precambrian time.

*November 17, 2014 by Chris*

**Earth Science**

What two types of air masses collide to form a dry line? On which side of this boundary would you expect to see rising motion, and why?

*November 20, 2014 by Sarah*

**social studies**

which of the following Nations has both the most stable democratic form of government and the highest standard of living? A.Israel B.Jordan C.Lebanon D.Syria

*February 25, 2015 by Hannah*

**math**

The school raised $1518.75 by charging an adult $3.75 and a student $2.50. The total attendance was 520. express each equation in slope-intercept form and graph each line ?

*April 6, 2015 by TJ*

**english**

please clarify : write the correct verb form : 1.girl _______ (speak) cleverly . 2.our course_________(complete) by the month of March 2016 thank you

*May 26, 2015 by r s telagathoty*

**pre-calculus**

Rewrite each equation into slope intercept or special case form. 1) 4x+3=8x 2) 9y-(7+3y)=0 I have no idea how to do these two. Can someone please help me? 3)x/2+y/7=1 My answer is y=-7x+14. Is this correct?

*August 29, 2015 by d*

**HELP!! ELA**

Why am I always stuck on last questions!? Anyways: Write one sentence that uses the proper adjective form of each of the following words: Spain, America, and Shakespeare. How do you do this?

*October 8, 2015 by liko*

**math**

Write the slope-intercept (y = mx + b) form of the equation from the information given. The line goes through the points (1/2, 3/2) and (-1/4, 5/4) I really don't know how to do this problem, can someone please show me how?

*October 26, 2015 by Abby*

**11th grade math**

Simplify each expression. Your answer should still be in exponential form. Make sure that you combine all numbers with the same base. y^a/y^b

*October 28, 2015 by Claire*

**Algebra 2**

Make predictions about how many times the graph of each equation below will touch the x axis. You may first want to rewrite some of the equations in a more useful form.=(x-2)(x-3). A. y=(x+1)^2 B. y=x^2+6x+9 C. y=x^2+7x+10 D. y=x^2+6x+8 E. y=-x^2-4x-4

*November 24, 2015 by Jj*

**Math**

How would I find the derivative of y=cotx with respect to x and also the answer should be in simplified form This is what I got: y= 1/tanx Y= cosx/sinx Idk what to do next

*December 15, 2015 by Fay*

**Precalculus**

Considering the line segment joining A(-5, 2) and B(7, 8), find an equation, in the form of Ax+By=C, that expressed the fact that a point P(x, y) is equidistant from A and from B. How would I go about even attempting this problem?

*January 20, 2016 by Mark*

**English**

The poem small passing by I grid de kok is free verse so has no structure, but I am not sure what sound device is used to creat rhythm and form? Please help

*August 29, 2016 by Claire*

**Spanish**

Choose the correct form of ser or estar to complete the following sentence. Alejandro y Eva ______ mis padres. a. es b. estan*** c. son d. esta

*October 24, 2016 by Alice Keign*

**Physics**

A lunch tray is being held in one hand. The mass of the tray itself is 0.240kg, and its center of gravity is located at its geometrical center. on the tray is a 1.00 kg plate of food and a 0.300kg cup of coffee. Obtain the force T exerted by the thumb and the force F exerted ...

*March 24, 2007 by Cavin*

**chemistry 12**

sry, a misprint. its: O2+2F2 <--> 2OF2 The question is looking for Kc. 2.50 mo of oxygen and 2.50 mol of fluorine gas are placed in a 2.00L glass container at room temperature. The container is heated to 400K and the following equilbirum is established: O2+2F2 <-->...

*November 20, 2006 by Natalie*

**Energy**

Without energy we can't do work cuz we can't apply ne force on an object. Gravity, itself a force, when, say, pulls a ball down to the gorund it actually does work. Now for that force, where does it get the energy from or what type of energy does it have? If u have a book ...

*June 20, 2005 by Mike*

**English**

Question 9 How is an amount indicated for a noncount noun? add an -es to the noun include a noncount noun first add an -s to the noun include a count noun first Question 10 Count nouns are usually what type of words? wrong specific limitless abstract Question 11 Noncount nouns...

*April 25, 2010 by christopher*

**Physics**

(1) A bullet of mass 1.9×10−3 kg embeds itself in a wooden block with mass 0.987 kg, which then compresses a spring (k = 120 N/m) by a distance 3.5×10−2 m before coming to rest. The coefficient of kinetic friction between the block and table is 0.42. What ...

*October 8, 2010 by Fred*

**English**

Paul ring the church bells at a moment's notice. Change the possessive to its longer form. The possessive is MOMENT'S. Please explain what you mean by your question-- Change the possessive to its longer form. WELL LIKE IF GIRL'S IS THE POSSISSVE THEN U WOULD CHANGE IT TO THE ...

*November 15, 2006 by Jenny*

**PHI103**

Sorry, I didn't post my argument the last time. Write two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the arguments in symbols using sentence letters and truth-functional connectives. The following is one of the ...

*September 5, 2012 by BJ*

**MATH**

What is 3.08 and 1.09 in fraction form? 308/100 and 109/100 The first can be reduced, I don't see a reduction in the second.

*January 16, 2007 by Anonymous*

**math exam prep question**

determine the quadratic equation with x-3 sqrt of 2 and -3 sqrt 2 in the form ax^2+bx+c=0?? How do you do this I do not know how to..please explain Thanks!

*January 22, 2013 by Nikki*

**chemistry**

explain why oxygen "likes" to form an O^2- ion. O2 is a molecule, not an ion. O2 is stable in the outer electron configuration.

*April 18, 2007 by Mani*

**science**

Are there any particular rules that govern whether or not a complex ion will form from a certain ion or do you just have to know them?

*September 3, 2007 by NICK*

**geometry**

Write the slope-intercept form of the equation of the line passing through the point (5,1) and parallel to the line y=-4x-2.

*October 26, 2007 by alan*

**geometry**

Write the slope intercept form of the equation of the line passing through the points (-2,4) and are perpendicular to the line y=-3x+3.

*October 26, 2007 by alan*

**geometry**

Wrtite the slope intercept form of the equation of the line passing through point (5,1) and parallel to the line y=-4x-2.

*October 30, 2007 by alan*

**math**

If in a problem it states 1.8 million how do I write that out in number form? Is it just 1.8 multiplied by a million to get 18,00,000

*January 27, 2008 by confused*

**math**

simple form 3 ¾ / 60,000= 41 ½ / 3 ¾ A computer can excute 36 instructions per microscecond. How many instructions can it execute in 4 min?

*February 5, 2008 by Sonya*

**Physics**

The moon orbits 3.84 x 10^8m form the center of the earth. How fast does the moon travel in meters per second?

*February 11, 2008 by Charles*

**trig**

find an equation of the line that passes through (2,-4) and is parallel to the line 3x-y=1. Write your answer in the form y=mx+b. please help!

*February 26, 2008 by Lou*

**Algebra II**

Write the equation log243(81)=4/5 in exponential form. My answer is 243^4/5=81. Evaluate 9^log9(54). My answer is 6. Are these correct?? Thanks

*March 29, 2008 by Lucy*

**Calculus**

I have a problem about complex number. Let z=7e^(7*pi*i/4) . Write z, z^4, z^7, z^(-2) in the form a + b i I have no idea how to do it. Any hints will be appreciated.

*May 7, 2008 by Kelly*

**chemistry**

If H2SO4 were added to the following, would it form a salt, if so what is the name of the salt? NaCl Ca(OH)2 Hf AlCl3 H2O Mg(OH)2

*December 2, 2008 by Bubba*

**chem**

if I had ethane reacting with chlorine would the chlorine remove two hydrogens and form dicholorethane?

*March 12, 2009 by Lena*

**Statitics**

25 periodicals have a mean of $180 and a standard deviation of $12. form a 95% confidence interval on the population mean.

*March 20, 2009 by Sally*

**Hyperbolas**

Does anyone know the formula to form the "Asymptote square"? It was something our teacher showed us to help us graph your hyperbolas easier.

*April 28, 2009 by Chopsticks*

**Global**

Explain how the African European and the Native American cultures blended to form a latin american culture?

*May 7, 2009 by Erin*

**science**

1.Why is it difficult to get substances in pure form in nature? 2.Name a liquid that is heavier than water and is not miscible in water?

*May 11, 2009 by Khairul*

**MATH Prob.**

There are 8 members on a board of directors. If they must form a subcommittee of 3 members, how many different subcommittees are possible?

*August 20, 2009 by Twg*

**basic Math**

1) Change 7/2 to a mixed or whole number? answer: 3 1/2 2) Multiply 4/5 * 20. Write your answer in simplest form.

*August 29, 2009 by Kalinda*