Number of results: 23,927

**physics**

Vector B~ has x, y, and z components of 9.6, 6, and 8.5 units, respectively. Calculate the magnitude of B~ .

*September 16, 2015 by james*

**physics**

Calculate the energy absorbed when 8.5g of ice is melted at 0 celsius

*September 21, 2015 by happy*

**chemsitry**

The weak acid HQ has pKa of 4.89. Calculate the [H3O+] of .035 M HQ. Thanks.

*October 2, 2015 by mark*

**Mathematics**

The point P,Q and R have co-ordinates. P=(-3,7) Q=(-2,3) and R =(2,2) calculate the length of line PQ

*November 3, 2015 by Mathias*

**physics**

Calculate the Specific Gravity of an object that sinks in water if m = 21.97 g and mA = 17.40 g.

*November 23, 2015 by Kim*

**Chemistry**

Calculate The volume occupied at s.t.p by 0.24g of ozone ( o=16, G.M.V=22.4dm3

*November 23, 2015 by moses*

**chemistry**

Devils food cake has a [H+] of 2.7 x 10-8 mol/L. calculate pH pOH [OH-]

*December 5, 2015 by emilio*

**science**

Calculate the PH of the 0.4g of NaoH in water to give 200ml of solution

*December 15, 2015 by praful*

**math**

If the sides of a triangle are 4p, 5p and 6p, calculate the size of the lagest angle.

*January 26, 2016 by somay*

**maths**

using the information that 3.19 x 78.3 = 217.871 calculate 0.319 x 7.83

*February 29, 2016 by maryam*

**accounting**

how to calculate the remaining lifespan of 3 trucks owned by a business

*March 2, 2016 by palesa*

**eee**

calculate normality oh hcl ? given specific gravity 1.18 and w/w 36.5

*March 12, 2016 by saabiq*

**Math**

The side of retangular floor are xm and (x + 7)m.the diagonal is (x + 8)m,calculate the value of x

*March 22, 2016 by Suraj*

**Science**

Calculate the frequency of rotation of the second hand clock

*April 10, 2016 by Kenny*

**Chemistry**

If it is known that the iron(ii) salt is FeSO4.7H20 calculate the %Fe from the formula

*April 15, 2016 by Revash Singh*

**accounting**

how to calculate depreciation using carrying value method?

*April 23, 2016 by Jeylen*

**chemistry**

60 gram of urea is dissolved in 250ml. Calculate the molarity

*May 4, 2016 by ankita Kashyap*

**chemistry**

calculate the number of moles of Mg in 0.12g(relative mass of Mg=24)

*May 5, 2016 by jan*

**science**

Calculate the no of neutrons present in 12x10^25 atoms of oxygen (8O^17)?

*May 9, 2016 by Rishikant*

**chemistry 12u**

how do i calculate this.. a solution of nitrous acid has a pH of 2.73 what is the [H3O+] ?

*May 10, 2016 by julie*

**science**

Calculate the equilibrium constant of NH4HS H2S + NH3

*May 22, 2016 by andile*

**maths**

calculate normality of 0•3molar H3PO3(phosphorus acid)

*June 2, 2016 by Bharti*

**chrmistry**

calculate the molar concentration of 1ppm solution of NaCl?

*June 12, 2016 by Anonymous*

**chemistry**

calculate the normality of 5.56 grams of K2Cr2O7 dissolved in 500 mL

*June 12, 2016 by uzma*

**PHYSICAL SCIENCES**

CALCULATE THE ENERGY OF A PHOTON OF RED LIGHT

*June 14, 2016 by KHUTSO*

**Science**

Calculate the volume of solute percent in 90ml solution with 5%

*June 26, 2016 by Althea Jane Duran*

**Science**

Calculate the no. Off molecules atom in 360gm of water...??

*June 30, 2016 by Anonymous*

**chemistry**

Calculate the pH of a solution containing 10 g / L of NH4Cl (Kb NH3 = 1.8x10-5

*July 5, 2016 by Anonymous*

**Physics**

Calculate the λSWL for molybdenum, when the accelerating potential is 15 kV

*July 25, 2016 by Sowmi*

**Che**

Calculate the fundamental particles in HCN and na2co3 and k2so4

*July 26, 2016 by gamma ali*

**science**

Calculate the pH of the solution 5ml of M/5,HCl+10ml of M/10 NaO

*August 12, 2016 by KANNAN*

**history**

calculate the tariff of your total stay in khaplu hotel.?

*August 13, 2016 by esha*

**CHEMISTRY**

CALCULATE THE DECREASE IN TEMPERATURE FOR 22.0 G SILVER THAT LOSES 625 J

*September 2, 2016 by MARY*

**Science**

Calculate the energy release in 1 gram of Uranium 235

*September 5, 2016 by ADA*

**Maths**

Calculate The Probability That At Least One Ball Is Blue.

*September 6, 2016 by Festus*

**CHEMISTRY**

calculate the weight of co2 by complete combustion of 1.5 \g of ethane

*October 2, 2016 by ATHARV Singh*

**maths **

calculate the surface area of a sphere of which the volume is 9000mm^3

*March 3, 2017 by Anonymous*

**science**

A sample of calcite have 50%cao 40% L.o.i.calculate %of caco3?

*October 11, 2016 by HASSAN zia*

**chemistry**

calculate the normality of 4g of sodium hydroxide in 100ml of solution

*October 13, 2016 by arul raj*

**math**

-8x 20 is a tangent to f(x) x^3 x^2 bx 18 at x=1 calculate the values of a and b I tried the question but I failed

*February 23, 2017 by Emily*

**Chemistry **

Calculate the number of H Atoms present in 0.125 g CH3OH

*March 1, 2017 by Alisa *

**Math**

The side of a square is 15 cm. Calculate the length of its diagonal. (1dp)

*October 24, 2016 by Anonymous*

**maths**

the net of a cube has an edge of 5cm. calculate the perimeter

*November 2, 2016 by joshua*

**Maths**

Given that 3^9 + 3^12 + 3^15 + 3^n is a perfect cube number. Calculate the value of n.

*November 12, 2016 by Help*

**CHEMISTRY**

CALCULATE THE OSMOLARITY OF THE FOLLOWING ).1M KNO3 & ).35M Na3PO4 & 0.35

*November 17, 2016 by BOBBI*

**Chemistry **

calculate number of moles of NH3 if 8g of H2 reacts in excess N2

*January 3, 2017 by Zohaib*

**chemistry **

Calculate pH of 6ml of 3M HNO3 diluted to 18 litres of water

*January 14, 2017 by Frederick *

**science**

calculate the moles of oxygen atom in 6.2 g of calcium carbonate?

*February 2, 2017 by j*

**Chem**

Calculate the mass of 0.025 moles of sodium bicarbonat

*February 16, 2017 by Anonymous*

**chemistry **

calculate the mass at 15.0 L at NH3 at 27 digree Celsius and 900 mm hg?

*March 19, 2017 by Tshering *

**modern physics**

Calculate the commutator [ p, e^ik.x ] where the function e^ik.x may be expanded as: e^ik.x = ∑infinite,n=0 (ik.x^n/n!)

*March 21, 2017 by gourav*

**mechanical**

A cylindrical tank with flat endplates is constructed from two sections that are welded together circumferentially.The outer diameter of the tank is 1.20, and the wall of the tank is 20.0 mm thick and the mamimum internal pressure is 2.00 MPa. (a) Calculate the maximum hoop ...

*November 16, 2016 by tommy*

**mathematics**

The basic wage earned by a truck driver for a 40 hr work week is $560.00. A)Calculate his hourly rate. Is the ans $14 per hour 2) For overtime work, the driver is paid one and a half time the basic hourly rate. B)Calculate his overtime wage for 10 hrs of overtime Is the ans...

*June 13, 2009 by MONIKA*

**math**

Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter your answer with the correct number of significant figures. 885.75 g + 10.151 g - 25.50 g Calculate the value of the following in exponential ...

*September 23, 2010 by help?*

**Finance**

High Hills plc produce underwater turbines to generate energy and are considering introducing machinery that will reduce the labour hours required to produce a turbine from 5 hours to 2 hours for the remainder of the product life cycle of 3 years. The production volumes are ...

*December 15, 2015 by Janice*

**Math - Statistics**

I roll 12 4-sided dice. What is the probability that I roll at least one 2? What is the probability that I roll exactly three 2s? So i take it, on any give roll, the probability of rolling a 2 is .25 (25%); the probability of rolling something else must be .75 The probability ...

*March 29, 2007 by Lauren*

**Science**

How much sodium hydroxide, at what concentration, do I need to add to 500 mL of 0.1 N HCL to obtain pH 6.8. How do you calculate this? pH = -log(H^+) M HCl = N HCl mols = M x L. After you know mols HCl you have, then make a solution of NaOH and calculate how much of that must ...

*February 5, 2007 by Ruby*

**Can someone help me on math?**

Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

*February 1, 2016 by Soso*

**physics help me please**

A 1220 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1990 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the horizontal and the ...

*November 28, 2010 by student*

**Chemistry 30 **

How do i do this question?? A 10.00ml Sample was taken from a 2Liter Container of Tropicana Orange juice. This sample was analyzed for its citric acid content by titration with a known 0.1112M NaOH base solution. A Phenoolphthalein indicator was added to detect the endpoint ...

*March 7, 2017 by Ellen*

**physics**

Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law of gravity. Calculate the maximum force ...

*March 15, 2009 by cb*

**calculus**

I have the following problem on a takehome assignment and am stuck. A particular stock has value V(t) at time t where V(t)=Ke^(1/2) where K>0. Assume that alternative investments grow in value to e^(rt). Calculate the instantaneous rate of change in the value of the stock. ...

*March 16, 2008 by Rey*

**Statistics Algebra 2**

A 10-question multiple choice test has 4 possible answers for each question. A student guesses on all ten answer. a)What is the probability that the student selects at least 6 correct answers? b)Is getting exactly 10 questions correct the same probability as getting exactly ...

*May 8, 2016 by Dloc*

**Healthcare finance**

Milwaukee Surgical Supplies, Inc., sells on terms of 3/10, net 30. Grosee sales for the year are $1,2000,000 and the collections department estimates that 30% of the customers pay on the tenth day and take discounts, 40% pay on the thirtieth days, and remaining 30% pay, on ...

*December 7, 2011 by hunter007*

**devry**

A small startup software developer company needs to create a program that will calculate the pay of its employees. For the third version of the program, the company wants the program to accept an employee’s name, the number of hours the employee worked, and the hourly pay ...

*January 24, 2011 by pp*

**College Chemistry**

We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15mL. From this molarity and volume, the moles of NaOH can be calculated. Since the unknown acid is monoprotic, this ...

*October 15, 2012 by Alex*

**Chemistry Dr. Bob222**

Ok, UMMMM I thought I was good.. Till now.. Ok, For Cup C Mass of cup,water,stirrer: 55.15 Mass of sodium bicarbonate: 2.02g mass of citric acid: 0.77g total mass: 57.94g mass of cup,solution, stirrer after reaction: 57.64 difference (CO2): 0.30g Part B: Limiting Reactants ...

*March 3, 2015 by Jennie*

**Physics**

One very long wire carries a current of 30A to the left along the x-axis.A second very long wire carries a current of 50A to the right along the line(y=0.280m,z=0) A)Where in the plane of the two wires is the total magnetic field equal to zero? B)A particle with a charge of -2...

*November 11, 2009 by Sandhu*

**accounting**

On December 31, 2008, University Theatres issued $500,000 face value of bonds. The stated rate is 6 percent, and interest is paid semiannually on June 30 and December 31. The bonds mature in 10 years. Required: If required, round your answers to the nearest whole dollar. ...

*July 20, 2011 by me*

**ap chemistry**

A sample of gas in a cylinder of volume 4.2 L at 316 K and 2.68 atm expands to 7.21 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Answer in units of J Path B has two steps. In the first step, the gas is cooled at ...

*October 8, 2012 by hanna*

**physics (Kinematics)**

A motorist drives north for 35.0 s at 25.0 m/s and then stops for 23.0 s. He then continues north traveling 13.0 m in 2.00 s. (a) What is his total displacement? (b) What is his average velocity (magnitude and direction)? I am just clueless on this one. I don't even know where...

*January 31, 2007 by eric*

**Statistics**

Consider the following frequency distribution of daily sales for a shop that was kept for the months of November and December in 2013. Daily Sales ($) 60-70 70-80 80-90 90-100 100-110 110-120 Number of days 5 11 22 13 7 3 a. From this frequency distribution, (i) draw a ...

*October 1, 2016 by Nathan*

**Business Finance**

Jungle, Inc., has a target debt−equity ratio of 0.72. Its WACC is 11 percent, and the tax rate is 31 percent. (Do not include the percent signs (%). Round your answers to 2 decimal places. (e.g., 32.16)) Required: (a) If Jungle's cost of equity is 14 percent, its pretax ...

*October 31, 2010 by Matt*

**AP Chemistry**

(a) When 300.0 milliliters of a solution of 0.200 molar AgNO3 is mixed with 100.0 milliliters of a 0.0500 molar CaCl2 solution, what is the concentration of silver ion after the reaction has gone to completion? (b)Write the net cell reaction for a cell formed by placing a ...

*April 5, 2010 by Jessica*

**Chemistry**

Calculate the theoretical pH after 2.50 mL and 9.50 mL of NaOH has been added in both the titration of HCl and of HC2H3O2. Indicate if the volume of NaOH is before or after the equivalence point. Compare these theoretical values with the actual values found on the titration ...

*July 14, 2010 by agreed*

**Chemistry**

Question from text: "The reaction between phosphorus and chlorine is described by the equation, P4(s) + 6 Cl2(g) ↔ 4 PCl3(l). At equilibrium, the concentration of Cl2 is found to be 0.87 M. Calculate Keq." Keq = [PCl3]^4 / [P4] [Cl2]^6 I am not seeing how to solve this ...

*January 28, 2016 by Jennifer*

**Chemistry**

0.717 g of a compound containing carbon, hydrogen, and oxygen is burned and found to produce 1.02 g CO2 and 0.624 g H2O. The molar mass of the compound is 124 g/mol. (a) Write a chemical equation for the combustion of this unknown hydrocarbon. (b) Determine the # of g and ...

*August 24, 2011 by Anonymous*

**physics**

a) What is the frequency of a photon of UV radiation ( = 2.00 x 10^-7 m)? (b) Calculate the energy of a photon of UV radiation. (C) What is the frequency of a photon of infrared radiation ( = 1.083 x 10^-6 m)? (d) Calculate the energy of a photon of infrared radiation. (e) How...

*February 11, 2012 by hannah*

**Physics "Space Travel"**

Suppose you want to go to the immense red giant Betelgeuse, which is about 500 light years away. (A light year is the distance that light travels in one year.) You plan to travel at constant speed in a 1000 ig rocket ship. A: If the rocket ship's speed is 0.500 c, calculate ...

*April 17, 2008 by Chelly*

**math**

A cone has a radius of 6 inches and a height of 9 inches a) calculate the volume of the cone. use pi. as my answer for part a i got 339.92 cubic inches,,,,,,, Is my answer correct ?? I need help doing part b and c. b) calculate a possible radius and height of a cylinder that ...

*November 24, 2012 by karen*

**Physics**

a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular motion before breakaway ...

*October 14, 2015 by parna deljo*

**Physics**

a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular motion before breakaway ...

*October 14, 2015 by Layla Smith*

**physics**

Two crates A and B connected together by a light rope are pulled along a factory floor by an applied force, F. Crate A has a mass of 50 kg and the coefficient of friction (μ) between crate A and the floor is 0,25. Crate B has a mass of 35 kg and μ between B and the ...

*June 3, 2012 by Nick*

**ap chemistry**

The weak acid HQ has pKa of 4.89. 1)Calculate the [H3O+] of .035 M HQ. 2)Calculate the (OH-) of 0.500 M HQ ....Am I correct? a) pKa = 4.89 => - log(Ka) = 4.89 => Ka = antilog(- 4.89) = 10-4.89 = 1.29x10-5 1. Given concentration of HQ, C = 0.035 M Dissociation of HQ is ...

*October 4, 2015 by patrick*

**Physics**

A storage tank of negligible mass and 30m high is filled with gasoline. Please calculate the following. Use density values found in the book. a) The gauge pressure and absolute pressure at the bottom of the tank. b) The force that acts on a square access hatch at the bottom of...

*December 9, 2015 by Kati*

**Calculus - average velocity**

*VELOCITY OF A CAR* Suppose the distance s (in feet) covered by a car moving along a straight road after t sec is given by the function s = f(t) = 2t^2 + 48t. a. Calculate the average velocity of the car over the time intervals [20,21], [20, 20, 20.1], and [20, 20.01]. b. ...

*September 21, 2008 by B <3*

**math**

The ratio of Juma’s and Akinyi's earnings was 5:3. Juma’s earnings rose to shilling 8400 after an increase of 12%. Calculate the percentage increase in Akinyi’s earning given that the sum of their new earnings was shilling 14100. (b) Juma and Akinyi contribute all the ...

*February 24, 2015 by David*

**for Drbob222**

how do I calculate pressure exerted by H2 in a Mg and HCl reaction? (weighing by redox)

*October 29, 2007 by Rebecca*

**chem**

2 HNO3(aq) + Na2CO3(s) 2 NaNO3(aq) + H2O(l) + CO2(g) (a) Calculate H° for this reaction. kJ

*November 26, 2007 by mel*

**ETH 125**

What are some measurements sociologist use to calculate prejudice.

*January 25, 2008 by AXIA*

**sociology**

Describe other measurements sociologists use to calculate prejudice.

*April 5, 2008 by someone*

**PHYSICS**

Calculate the power output of a 1.3-g fly as it walks straight up a windowpane at 2.5 cm/s

*April 10, 2008 by Lizbeth*

**Chemistry**

How do you calculate the pH, pOH, [H3O] and [OH] for a 0.067 M solution of sodium iodate

*April 14, 2008 by LT*

**Geomotry**

How do you calculate the square footage on the surface of a cylinder if you know the diameter and length?

*April 15, 2008 by Dennis*

**Chem II**

Calculate the pH of the solution made by mixing 35.0 mL of 0.500 M ca(OH)2 with 45.0 mL of 0.710 MHCl

*April 16, 2008 by Ken*

**history**

describe other measurements sociologist use to calculate prejudice?

*June 6, 2008 by tony*

**ict**

you need to write one of these to calculate things on spreadsheets? 7 letters

*June 21, 2008 by jasmine*

**chemistry**

Calculate the number of english tons(2000 lb per ton) in 6.03 lb

*August 19, 2008 by Lauren*

**Psychology**

Describe other measurements sociologists use to calculate prejudice.

*August 27, 2008 by Marty*

**Chemistry**

Given that for ethanoic acid pKa=4.75, calculate the pH of sodium ethanoate 0.1M.

*September 26, 2008 by Alice*