Friday

August 28, 2015
Number of results: 11,411

**Chemistry**

A base has a Kb of 2.5 x 10–11. Which of the following statements is true? This is a concentrated base. This base ionizes slightly in aqueous solution. This is a strong base. An aqueous solution of this base would be acidic.
*March 9, 2012 by Rachel*

**Science**

Ten pounds of liquid water is at a temperature of 180 degrees F at standard atmospheric conditions. Determine the energy required to convert this to water vapor (steam) at a temperature of 212 degrees F.
*September 3, 2012 by Anil*

**MATH**

HASAN MADE A MODEL FOR 437 HUNDREDS, 3 TENS,AND 7.WHAT ARE TWO OTHER WAYS HE COULD SHOW 437 USING BASE-TEN BLOCKS?
*September 15, 2011 by CHARLES*

**math**

i am a number greater than 70000 but less than 90000. My ten digit is the same as my ones digit. My ten digit is the same as my ones digit. My ten thousand digit is four times my ones digits. Both my hundreds and thousands are half the ten thousand digit. what number am I?
*June 20, 2013 by ramil*

**Math**

The trapezoid above has a base of 38 m and a height of 12 m. Which set of dimensions would produce a similar figure? A. base = 114 m, height = 36 m B. base = 38 m, height = 36 m C. base = 119 m, height = 36 m D. base = 109 m, height = 36 m
*May 8, 2014 by Anonymous*

**Chemisty**

If ten drops of 0.3 M HCl are mixed with ten drops of 0.3 M Na2S2O3, what will be the concentration of each chemical in the mixture? Please help, i am pretty sure that the concentration should be 0.3 M but i am not sure if i am supposed to do somthing with the ten drops. Thank...
*January 7, 2009 by Nancy*

**math**

alana has 5 base ten blocks.She has at least one of each type of block.The value of her blocks is greater than 140.What blocks could she have?
*October 2, 2012 by ronel*

**math**

convert the numeral to a numeral in base 10 43 5
*May 15, 2011 by Renee*

**math**

convert the numeral to a numeral in base 10 13 5
*May 15, 2011 by Renee*

**math**

convert the numeral to a numeral in base 10
*May 9, 2013 by Ruth*

**Algebra**

In my history book the expression square root (with a 3 in the nook( around a square root of ten is given. It says it equals the square root of ten with 6 in the nook. However, I don't understand where the six came from. I thought you multiply the two things in the nooks ...
*September 9, 2009 by Eve*

**2nd grade math**

write the sum.Show the ten-ten-fact you used. 9+7=16 /\ 1 6 10+__=? is it 10+6=16
*October 24, 2012 by Alexis*

**chemistry**

Show calculation setups and answers for the following problems. a. convert 21 C Celsius to degrees Fahrenheit. b. convert 101 F Fahrenheit to degrees Celsius. c. convert 15 nm into km.
*February 11, 2014 by CeeCee*

**Math**

isosceles trapezoid with a perimeter of 52 meters; one base is 10 meters greater than the other base; the measure of each leg is 3 less than twice the base of the shorter base
*August 25, 2014 by Anonymous*

**SraJMcGin spanish**

i just got home from rehersal and i have a spanisg collage due tomorrow i need to get ten oics about what i am doing in the next ten years and put sub headings under them in spanish. i will have these done by no later than 11 pm -- it is ten sentences but i need to find the ...
*April 22, 2009 by sam*

**Math**

In the base-ten numeral 770, which place is the digit that repersrnts a value that is 10 times the value of the 7 in the tens place?
*February 4, 2013 by Ashia Tate*

**elementary math**

what does it mean on the instructions if it says "Use a ten-frame and O to make a ten. Find the sum."
*September 6, 2007 by joe*

**math**

Marie used base-ten blocks to model 328 she used 3 hundreds, 2 tens, and 8 ones. for what could you trade one of the tens?
*October 5, 2011 by amor*

**heeeeeelp computer**

A Harshad Number in a given number base is an integer that is divisible by the sum of its digits when written in that base. For example, the number 11 in base 5 (which is 6 in base 10) is divisible by 1 + 1 = 2 in base 5. It is therefore a Harshad number in base 5. 1 is the ...
*July 5, 2013 by lin*

**Computer pls help**

A Harshad Number in a given number base is an integer that is divisible by the sum of its digits when written in that base. For example, the number 11 in base 5 (which is 6 in base 10) is divisible by 1 + 1 = 2 in base 5. It is therefore a Harshad number in base 5. 1 is the ...
*July 7, 2013 by lin*

**math**

hasan made a model for 437 using, 4 hundreds, 3 tens, and 7 ones. what are two otherways he could show 437 using base ten blocks
*September 21, 2011 by Anonymous*

**MATHS**

USING ONLY THE NUMBER FOUR, PLACE TEN MONEY AMOUNTS IN THE TEN BLOCKS OF THIS PYRAMID TO TOTAL $10,000
*July 1, 2011 by GURVINDER*

**MATHS**

USING ONLY THE NUMBER FOUR, PLACE TEN MONEY AMOUNTS IN THE TEN BLOCKS OF THIS PYRAMID TO TOTAL $10,000
*July 1, 2011 by GURVINDER*

**Math**

Hasan made a model for 437 using 4 hundreds, 3 tenns, and 7 ones. What are two other ways he could show 437 using base-ten blocks?
*August 10, 2011 by Diamond Burnette*

**Math**

What place value is ten times smaller than ten millions place? A) hundred trillion B) one trillion C) hundred billion D) ten billion I think it's ones place. But that's not an option, maybe they did a typo.
*November 27, 2011 by Jazmin*

**English**

1. I was sad at the sight of the scene. 2. I was sad to see the scene. 3. I was sad when I saw the scene. (Do they have a similar meaning?) 4. Let's make it at ten. (What is the meaing of 'make it' in the sentence? Does #4 mean #5?) 5. Let's meet at ten. 6. Finally he made it...
*December 5, 2009 by rfvv*

**Physics**

If i have ten grains of sand on a flat, 8x8 chessboard, randomly distributed, what is the probabilty that all ten are on the same square?
*October 8, 2010 by Jessica*

**Chemistry**

How do I convert the atmospheric pressure = 30.17in to mmHg? also how do I convert to mm H2O?
*October 21, 2008 by Kate*

**physics**

How do you convert from nanometres - metres and vice versa? I need to convert 0.6 X 10-6 (the -6 is an expom to nm...
*January 15, 2010 by Sarah*

**Physics - Converting**

Convert each of the following measurements to its equivalent in metres. A. 1.1cm B. 76.2 pm I don't get how to convert :\
*September 11, 2011 by Anonymous*

**Biochemistry**

Calculate how you would make 0.5L of a 0.5M (500mM) acetate buffer at a pH of 4.7. Available is sodium acetate and glacial acetic acid. pH=4.7 pKa of acetic acid=4.76 Not sure if I did this next part right: 4.7=4.76 + log [base]/[acid] -0.06= log [base]/[acid] 10^-0.06= [base...
*September 11, 2014 by Nicole*

**chemistry**

1) Convert 0.525 atm to kPa 2) Convert 125000 Pa to psi
*April 17, 2008 by Kate*

**math**

these are the problems to convert to base 10. 1. CDXLIV 2. 432 then has five next to it 3. ET0 then has twelve next to it 4. 1011 then has two next to it 5. 4136 then has seven next to it
*September 17, 2010 by Stacey*

**4th grade math**

can you convert 154 minutes to total hours in a week? I don't know how to convert
*December 9, 2014 by reid*

**maths**

i am a seven digit my ten place is 3,my lakhs place is 2,the hundred place is twice the lakhs place,the thousand place is thrice the ten place ,the ten lakh place is 3 less than the thousand place,the one place is 2 less than the thousand place,the ten thousand place is 8
*March 8, 2015 by thnki*

**PHYSICS**

The weight of fully saturated soil in a prism having a 4.00 sq. ft. base (or a base of 4.00 ft*ft) is 4,000 lbs. Pore pressure at the base is 499 lbs/(ft*ft). True or False: The effective stress at the base is 501 lbs/(ft*ft).
*February 26, 2011 by dan*

**math**

how to we convert one currency to another is there any formula? or plz give me an example. i have no idea how do we convert.
*February 20, 2013 by Riana*

**Chemistry**

1. Consider a 1.00g unknown sample that contains 62.0% sodium carbonate and 38.0% sodium bicarbonate, NaHCO3, by mass. When this sample is dissolved in water, how many mL of 0.200M HCl will be required to convert all of the carbonate to bicarbonate? How many mL will be ...
*February 26, 2014 by Mia*

**PreCal**

A square sheet of cardboard 18 inches is made into an open box (there is no top), by cutting squares of equal size out of each corner and folding up the sides. Find the dimensions of the box with the maximun volume. Volume= base(width)height but base + 2H =18 base + 2W=18 ...
*November 6, 2006 by Chau*

**English grammar**

Use a singular verb with sums of money or periods of time. Ex) Ten dollars _____ a high price to pay. Ten dollar is a sum of money, so you have to use a singular verb. In this case, the subject acts as a unit. I'll give you another example. ex) Ten years is a long time. In ...
*December 12, 2007 by John*

**chem**

convert a pressure 1.75atm to kpa convert the pressure of 1.75atm to mm Hg convert a pressure of 570 torr to atmospheres
*May 31, 2008 by amie*

**Maths**

(1)Evaluate 54 base 6 + 305 base 6, give your answer in base 6 (2) evaluate 785 base 9 + 306 base 9 , give your answer in base 9
*November 2, 2013 by Virgie*

**2nd grade**

I'm a number using only 5 base ten blocks between 150 and 250, and the number in the tens place is half the number in the ones place
*October 26, 2010 by Kelli *

**algebra**

convert 5.346 to a percent Convert 38.6% to a decimal.
*June 19, 2008 by shuronda*

**Physics**

How do you convert 10 Hz to seconds? I know that Hz = s^-1 or 1/s, but I don't understand how to convert the units.
*February 21, 2009 by Lucy X*

**English**

1. I have a staff who works for me. 2. I have a staff who work for me. 3. I have a staff of one who works for me. 4. I have a staff of ten who work for me. 5. I have ten staff who work for me. 6. I have ten staffs who works for me. 7. I have ten step members who work for me...
*September 25, 2014 by rfvv*

**math**

Use the Laws of logarithms to rewrite the expression log(base 2)(11x(x-9)) in a form with no logarithm of a product, quotient or power. After rewriting we will have: log(base 2)A+log(base 2)x+log(base 2)f(x) What is A and what is f(x)?
*February 20, 2013 by Rachel *

**Chemistry**

Could someone answer this. Im stuck on it. In general, the most elegant way to add one carbon with an OH on it to a primary alkyl halide: A)Convert the alkyl halide to a grignard and add formaldehyde, followed by H3O B)Convert the alkyl halide to a lithium dialkyl cuprate, and...
*April 28, 2011 by Anonymous*

**english**

Which one of the following statements is true for the base forms of verb? A. when the subject of a sentence is singular, add "-s" to the base form. B. Add "to" to the base form to create an adjective. C.Do not use a base form with plural subjects. D.Add "-ed" to irregular base...
*October 14, 2012 by amanda*

**Business**

You are developing a data base for Army tracked combat vehicles and you are normalizing the data base to base year 2007 dollars. What number would you enter into the data base for a vehicle budgeted at $1,725,000 in the FY08 appropriation?
*November 5, 2013 by Gail*

**Chemistry**

Write the formula of CH3NH+3 conjugate base. and Indicate whether the conjugate base of CH3NH+3 is a strong base, a weak base, or a species with negligible basicity.
*July 25, 2013 by Shaun*

**Physics**

what um it's like a measurement but the u is all wierd... I'm trying to convert 462 um to centimers... anybody can tell me an easier way to convert measurements?
*September 8, 2008 by I NEED HELP*

**Chemistry**

Convert a gas pressure of 485 cmHg to atmospheres. (cm not mm!)Wouldn't you simple convert cm to mm (4850) and divide by 760 mmHg?
*October 20, 2010 by lavonne*

**Chemistry**

Determine the pressure in a 125-L tank containing 56.2 kg of oxygen gas at 25 °C. So, PV=nRT I convert 25 °C to 298.15 K Do I have to convert anything else? What else do I do?
*January 19, 2011 by Anon*

**4th Grade Math**

I have an 8 in the ten thousands place, My hundreds digit is greater then my ten thousands digit, My ones digit is the number of right angles in a rectangle, my tens digit is the difference between thirteen and my ten thousands digit, my value is less that 87 thousand but ...
*September 19, 2012 by Mikaela*

**English**

1. It is fifteen past three. 2. It is fifteen after three. 3. It is a quarter after three. 4. It is three quarters after/past two. (Are they all the same and grammatical?) 5.It is ten before three. 6. It is ten minutes before three. 7. It is ten minutes before three p.m. 8. it...
*March 17, 2015 by rfvv*

**chemistry**

If the acid base reaction HA(aq)+B^-(aq)---> HB(aq)+A^-(aq) <--- has a k = 10^-4,which of the following statements are true & why? (a)HB is a stronger acid than HA (b)HA is a stronger acid than HB (c)HA & HB have same acidity (d)B^- is a stronger base than A^- (e)A^- is ...
*January 1, 2010 by chikirshu*

**Chemistry130**

Can someone please help me with this? Are these substances acids or bases? 1. Tums- Base, right? 2. Vitamin C- Acid, right? 3. Nail Polish Remover- Base or Acid? 4. Coca Cola Pop- Acid, right? 5. Cream of Tarter- Acid, right? 6. Calamine Lotion- Base or Acid? 7. Lemon Juice- ...
*October 13, 2009 by Adam*

**math**

need help to volume of the bird seed with base 6 cm and from base to cylinder 40 cm then base to tip of cone 50 cm
*November 29, 2009 by Anonymous*

**math**

Find the representation of the number 256 in thefollowing bases:a. Base six b. Base twelvec. Base two
*October 15, 2010 by Anonymous*

**Chemistry**

Saccharin (C7H5NO3S) is sometimes dispensed in tablet form. Ten tablets with total mass of 0.5800 g were dissolved in water. They were oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium chloride solution. The mass of BaSO4 ...
*September 29, 2013 by Anonymous*

**calculus**

A baseball diamond is a square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 24 ft/s. a.) At what rate is his distance from second base decreasing when he is halfway to first base? b.) At what is his distance from third base increasing at ...
*October 22, 2012 by Dominic *

**algebra**

a building in a city has a rectangular base. the lenght of the base measures 70 ft less than twice the width. the perimeter of this base is 820 ft.
*January 23, 2012 by jojo*

**maths**

how do I convert (ln) y= a*b^x to base of e?? I have an equation i have found first of all using the same set of data which is y = 49.65e ^(-0.027x), and i now need to make the following equation match with that one; ln y = 3.93 x (0.99^x)
*August 21, 2008 by niki*

**Chemistry**

Could someone answer this question. Im stuck on this one. Thanks In general, the most elegant way to add one carbon with an OH on it to a primary alkyl halide: A)Convert the alkyl halide to a grignard and add formaldehyde, followed by H3O B)Convert the alkyl halide to a ...
*April 21, 2011 by Anonymous*

**chem**

Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2-(aq) + HCl(aq) <=>Cl1-(aq) + HS1-(aq) This is what I think it is: Acid = HCl Base = S^2- Conjugate acid =HS^1- Conjugate base = Cl^1- 2) H2O2(aq) + PO43-(aq) <=>HPO42-(aq...
*January 29, 2012 by Erik*

**Math**

convert 1./27 convert repeating decimal to a/b
*May 9, 2013 by Ruth*

**Convert**

how do you convert .466666666666 repeating to a fraction
*October 24, 2014 by Skywaimasika*

**math**

i have 2 math questions i dont understand so if you could help me i would like that. Log base 3 64-log base 3 (8/3)+log base 3 2=log base 3 4r Log base 6 (b^2+2)+logbase6 2=2
*February 10, 2008 by Jz*

**vocabulary**

ten words with different meanings... ten words with different related words... ten blended words...
*September 18, 2007 by klar maesen*

**Chemistry**

Could someone answer this question so I understand it. Thanks In general, the most elegant way to add one carbon with an OH on it to a primary alkyl halide is to: a) convert the alkyl halide to a Grignard and add formaldehyde followed by H3O. b)convert the alkyl halide to a ...
*April 12, 2011 by Jules*

**Calculus**

log (base 3) x^2 = 2log(base 3)4-4log(base 3)5 And I need to solve for x.
*July 6, 2015 by Mona*

**Math - Bases**

What is 12 base 5? Would you just divide 12 by five and get 2 (but then what about the remainder) If you are refering to logs, 12 base 5 means log of 12 to the base 5. Call it x. 5^x = 12. x = log 12/log 5 (any log base can be used) x = 1.07918/0.69897 = 1.54396 If "5" is ...
*October 29, 2006 by Laura*

**Science**

1. convert .621 hl to liters? 2. Convert .013 dl to liters? 3. Convert .00078 mg to kg? 4. Convert 2.45 g to cg? 5. convert 1.9 km to cm? 6. convert .0476 mm to dam? 7. Convert 6.4 ul to nl? Do them all this way: (a) figure out what the units mean. For exampple, "ul" is ...
*January 14, 2007 by Biologyconfused....*

**math**

using only the number eight,place ten money amounts in the ten blocks of a standard pyramid with 4 blocks on the bottom row
*September 8, 2011 by aishat*

**Algebra**

How can you find log base 3 of 242/5 using the given information without a calculator? log base 3 of 10 = 2.1 log base 3 of 11 = 2.2 log base 3 of 4 = 1.3
*March 15, 2010 by Sara*

**Math**

Convert 2yd, 2ft, 5in. to centimeters. Convert 10yd,1ft, 7in. to meters. I tried it twice but still didn't get it right. Please help me out.
*September 30, 2014 by Whitney*

**Brain Research Question**

The brain is particularly efficient at creating neural pathways for language: before the age of ten (or) after the age of ten I'm thinking its before the age of ten since the neural pathways are formed in the early years. Language is another hint. You are right.
*April 6, 2007 by Hallie*

**reading**

i have to list ten characteristics of rikki tikki tavi and i have ten but I was wanting some more input cause I am not sure they are right
*October 10, 2007 by victoria*

**Physics**

How can discribe in words how to add ten vectors? Please help. Add the ten x components for the x component of the resultant. Call it X Add the ten y components for the y component of the resultant. Call it Y resultant = sqrt (X^2 + Y^2) theta = arctan Y/X (counterclockwise ...
*September 2, 2005 by Cheyenne*

**Chemistry**

Use the Bronsted-Lowry definitions to identify the two conjugate acid-base pairs in the following acid-base reaction: HCO3^- + S^2- <-> HS^- + CO3^2- I got it. HCO3^- is the base in the pair with CO3^2-. S^2- is the acid in the pair with HS^-. Would you believe you have ...
*May 26, 2007 by Raj*

**5th grade**

i want to see if my answer is correct & that i am understanding this. question: round me to the nearest ten, i am 320 the sum of my digit is a multiple of 6 i am even. My Answer = 24 20 ten 24 2+4 =6
*September 17, 2009 by Josh*

**2nd grade**

Math i have 7 ten rods and 3 units squares. i am playing Win A Flat, i rolled a 9. how many ten rodes do i have after the exchanges?
*October 14, 2009 by mike*

**8th grade algebra**

ten over eight = what over ten????? please help me!!!!!!!!!! 10 / 8 = x / 10 This means that 8 * x = 10 * 10 Solve for x.
*February 1, 2007 by jess*

**Chemistry help plzzzzz!!!!! **

I've tried solving this problem 100x and i keep getting it wrong. I dont know where i am going wrong. Wouldnt it be: (100ml * 4.180 * 6.49) + (6.50*6.49) 2713+42.2=2755.2= 2755.2/0.05=55104 Then convert to kj so 55104/1000=55.104 which would be 55.1 for correct sig digits???? ...
*April 10, 2014 by Ashley*

**math**

I need help rounding 423,607,492 to the following place values. ten thousands million Please tell us what you think, and we'll be glad to comment on your answers. Starting at the ten thousands digit, it is now 07,492, so rounding it to the nearest, is one ten thousand 10,000 ...
*April 22, 2007 by kim*

**chemistry**

Saccharin (C7H5NO3S) is sometimes dispensed in tablet form. Ten tablets with total mass of 0.5797 g were dissolved in water. The solution was then oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium chloride solution. The ...
*October 27, 2010 by Anonymous*

**math**

Write teh base 10 number 945 s a base 6 number and as a base 12 number. then, using these numbers as base 10 numbers, find the positive difference between them.
*January 11, 2011 by Brenda*

**math**

Alieta was playing the "win a flat"game and had 7 ten rods and 3 unit squares. She rolled a 9. How many ten rods does she have after the exchanges are made?
*October 12, 2010 by jose*

**chemistry please check**

for the following reactions label each species as an acid or a base. Indicate the species that are conjugate acids and conjugate bases. A. HSO4-(acid) + NH3(base)<--> SO4^2-(conj base) + NH4+ (conj acid) B. HPO4^2- (conj base)+ NH4+ (conj acid) <--> H2PO4-(acid) + ...
*April 25, 2010 by Anna*

**English**

chapter 14 sentence check 2... Although everything about the Nazis ﬁlled the Dutch spy with ____ (convert), his assignment was to ___(convert)peoples pain.
*December 3, 2012 by Sam*

**Calculus**

A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? (b) At what rate is his distance from third base increasing...
*December 14, 2014 by Anonymous*

**Calculus**

A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? (b) At what rate is his distance from third base increasing...
*December 14, 2014 by Anonymous*

**pH- part 2**

how much .10M Base (in mL) is needed to neutralize 8.00mL of .10M Acid? base- NaOH, acid- HCl, base volume (mL)- ? base- NaOH, acid- HC2H3O2, base volume (mL)- ? VaNa=VbNb Vb= 8ml*.10N/.10N= 8m.
*April 14, 2007 by Christine*

**math**

While adding ten two-digit numbers the digits of one of the numbers were interchanged. As a result the sum of all the ten numbers increased by a value which was four less than that number. Three times the sum of the digits of the original number is ten less than the number. ...
*November 13, 2014 by Suzanne*

**Chemistry**

To 20 mL of .2 m nitric acid are added successive amounts of a base of unknown concentration. Neutrality is reached after the addition of 40 mL of the base. What was the OH of the original base solution? assume that it was 100% ionized.
*May 28, 2015 by Ian*

**chem**

Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2-(aq)+HCl(aq)<=>Cl^1-(aq)+HS^1-(aq) This is what I ...
*January 29, 2012 by Erik*

**biochemistry**

Is CAPS an acid or base? If it is an acid, what is its base? If it is a base, what is its acid? Also, is Tricine an acid or base? If it is an acid, what is its base? If it is a base, what is its acid? Thanks.
*January 27, 2008 by stew*

**Advanced Functions/ Precalculus Log**

1. Evaluate 4^(log base4 64) + 10^(log100) 2. Write 1+log(base2)x^3 as a single logarithm 3. Write log(base b)√(x^3 y z^6) 4. Solve log(base 2)x-log(base 2)6=log(base 2)5+2log(base 2)3 5. Solve 3^(2x) = 9(81^x) 6. Solve 3^(2x)=7^(3x-1). Round answer to two decimal places...
*December 19, 2013 by Jessie*

**Chemistry (check) **

Not sure if these are right 1) What is the Molar Enthalpy of Neutralization (ΔHn) in kJ/mol if 5.00 moles of HCl(aq) (acid) neutralized 5.00 moles of NaOH(aq) (base) and released 13093 J of heat? 13093/5= 2618.6 then convert to kj 2) Calculate the Molar Enthalpy of ...
*June 30, 2013 by Mary *