# If the relative atomic mass of CH2O is calculated it's empirical formula (C=12,H=1,O=16)

46,086 questions, page 180

You invest \$3000 in a savings account where you earn 4% interest compounded continuously a) what is the formula A(t) for the balance after t years? A(t)=3000e^0.04(t) b) How long will it take for the money to double? 6000=3000e^0.04t Is this the correct

asked by Hannah on April 29, 2011
2. ## physics

I have a typical Opamp diode log amplifier. formula for it is.Vout=-Vth*ln(Vin/IsR) The positive side of amp has a resistor and then is tied to ground.How does that extra resistor impact my standard forumla.

asked by bearinthewoods on April 21, 2016
3. ## physics

On a safari, a team of naturalists sets out toward a research station located 5.54 km away in a direction 47.9 ° north of east. After traveling in a straight line for 1.29 km, they stop and discover that they have been traveling 24.6 ° north of east,

asked by Shant on September 5, 2014
4. ## Physics

A shell is launched at 140 m/s 56.0 degrees above the horizontal. When it has reached its highest point, it launches a projectile at a velocity of 110 m/s 35.0 degrees above the horizontal relative to the shell. 1) Find the maximum height (in m) about the

asked by . on September 18, 2010
5. ## math

please guys help me this question, how to solve it. Calculate the total surface area of a hollow cylinder whose radius is 15 cm and height is 20 cm. What formula can be applied between (a) SA = 2pie*r*h + 2pie*r^2 (b)SA = 2pie*r*h State the reason why you

asked by kelvin on August 16, 2018
6. ## algebra

You can compute the cost of 5000, and 5001 mowers from the formula, then subtract. Another method is to take the derivative of the cost function with respect to n, giving you the cost per mower... C=200n+150000 dC/dn=200 dollars

asked by bobpursley on July 5, 2005
7. ## algebra

Write a formula that relates temperature t in degrees Fahrenheit at altitude h (in thousands of feet) and a ground temperature of 65ºF. State any restrictions on h. b. Find the temperature at 11,000 ft above Earth’s surface.

asked by Hailey on October 16, 2012
8. ## physics

A pin 2 cm long is placed 12 cm away from a convex lens at right angles to the principal axis. If the focal length of the lens is 20 cm, by scale drawing and lens formula find the nature , size and position of image.

asked by Suyash on May 30, 2017
9. ## chemistry

If you dissolve 29.25 g of sodium chloride in 250 g of H2O. What would be the freezing point? Kfp- -1.86 degrees C/molal I know the formula is K times molality. I am taking -1.86(2.00) and getting -3.72 degrees Celsius, when the answer is -7.44 degrees.

asked by Hannah on September 19, 2011
10. ## physics

A typical steel B-string in a guitar resonates at its fundamental frequency at 240 Hertz. The length of the string is 0.620 m. What is the wave velocity along the string? Find your answer in m/s. What is the formula to solve?

asked by Student in Need on March 29, 2011
11. ## Physics - Pendulums

A uniform circular disk whose radius R is 32.0 cm is suspended as a physical pendulum from a point on its rim. (a) What is its period of oscillation? __ s (b) At what radial distance r < R is there a point of suspension that gives the same period? __ cm in

asked by COFFEE on April 12, 2007
12. ## Physics urgent help have a test!!!

1. a little spider monkey named flo has stolen a bunch of bananas from her older brother Charley and is now running away frm him with the bananas in hand. She sees salvation in a long vine and grabs the bottom, hoping to swing away a) if she has a mass of

asked by deepti on April 9, 2011
13. ## health and fitness

CASE STUDY: CHRIS DOUBLE Chris is a high school student and is eager to gain some muscle mass. He eats a diet that consists primarily of processed foods (fast food, cafeteria, etc.). Chris is anxious to get stronger so that he can go out for the wrestling

asked by Anonymous on October 9, 2013
14. ## mechanics

(ii) Calculate the direction and magnitude of the joint force at the mid-point between the fourth and fifth lumbar vertebrae by considering the forces and moments acting on the lower body. Direction of joint force at midpoint between L4 and L5 = F =? ILB

asked by kkuh on February 8, 2015
15. ## MATH

WHAT IS THE FORMULA FOR CALCULATING: A diver is on a platform 11 meters above the water. If she dives down 4 meters below the water, what is her total dive

asked by JACKIE on September 10, 2015
16. ## Math

32% of Americans age 25-29 have a tattoo. Find the odss that a 25-29 year old american does not have a tattoo? I used the formula p(no tattoo)/p(tattoo) and got the answer 13.7

asked by Anonymous on July 8, 2011
17. ## trigonometry

find the values of y if the distance between the two points (10,y) and (16,2) is 10. i wrote down the distance formula: 10=SQRT(16-10)squared + (2-y)squared now how do i solve for y??

asked by y912f on January 15, 2009
18. ## Math

The quantity is partly constant and partly varies inversely as the square of x. When w=1,x=11 and when w=2,x=5. Find the formula connecting w and x find w when x=4.

19. ## basic excel

Write one Microsoft excel formula that works for conditions below on cell C1 for any number: a) IF A1+B14 but 9 but 15, return \$75

asked by jay on March 3, 2014
20. ## Math

The quantity is partly constant and partly varies inversely as the square of x. When w=1,x=11 and when w=2,x=5 find the formula connecting w and x find w when x=4

21. ## Physics

Calculate the force between a +5 µC test point charge and this source charge at a distance of 2.00 cm. (µC = 1.0 × 10–6 C) force=kq1q2/r^2 Have the formula now what do I do?

asked by Pat on May 19, 2012
22. ## math,help

how do you convert miles to feet. what formula do i use. one mile=5280feet so you would multiply the number of miles to 5280 to get feet thank you

asked by jasmine20 on January 15, 2007
23. ## Chemistry

The density of a gas containing chlorine and oxygen has a density of 2.875 g/L at 754.5 mm Hg and 11(degress C). What is the most likely molecular formula of the gas?

asked by Toni Jones on March 28, 2011
24. ## calc -rates

assume a circle is expanding with time where r= t+3. What is the formula for rate of change of an area of the circle with reswpect to time?

asked by daryl on December 19, 2012
25. ## MATH URGENT

What distance would the skydiver fall during 7s of free fall ? Use the formula d= 4.9t^2, where in d is distance in meters and t is time in seconds. Pleeeeeeeeeese help me!!!!!!

asked by SPIKE on January 8, 2013
26. ## Chemistry

What is the name of the product formed by the reaction of propylide ion and 2-chloropropane? I'm having problem because I don't know the formula of propylide ion.

asked by Jennifer on June 5, 2008
27. ## algbrea

given the perimeter of a rectangle and either the length or width, find the unknown measurement using the formula.the perimeter is 94 cm and the length is 25cm

asked by jackjohnsonb on October 15, 2009
28. ## CHEMISTRY

40g of antimony combine with 80g of oxygen to form an oxide of antimony what is the simplest formula of the oxide

asked by GODBLESS on March 14, 2013
29. ## CHEMISTRY!

Pure copper has a density of 8.933 g/cm^3. What is the volume of a 5 g block of copper? I did D=M/v Flipped the formula to V=M/D V= 5g/8.933 (g/cm^3) so that equals .56 cm^3 Right?!?

asked by John on May 12, 2012
30. ## math

Assume a cube with all sides equal to x. Let the change in x with respect to t; x(t) = 2t + 1. What is the formula for the rate of change of the volume of the cube?

asked by Jamie on June 6, 2014
31. ## Math

The formula A=bh is used to find the area of a parallelogram. If the base of a parallelogram is double and its height is doubled, how does this affect the area.

asked by Cindy on February 8, 2011
32. ## math

find the length of a line segment with endpoints (4, -3) and (-2, -1) The general formula is Length = sqrt[(x2 - x1)^2 + (y2 - y1)^2] In your case, that is sqrt [(-6)^2 + (-2)^2]= ...?

asked by Michael on March 2, 2007
33. ## Math Trig

use a double-angle formula to find the exact value of cos2u when sinu=5/13 , where pi/2

asked by Larry on April 14, 2016
34. ## liberal arts math

I have to figure the finance charge per \$ 100.00 for a loan of \$4500.00 with a finance charge of \$1080.00 I don't know what formula to use

asked by Jocelyn on May 19, 2015
35. ## Chem

The sedative Demerol hydrochloride has the formula C15H22ClNO2. How many grams are in 0.020 mol of Demerol hydrochloride? I got 6.640g is this right?

asked by Jen on October 9, 2010
36. ## Precalc

Find a possible formula for the trigonometric function whose values are in the following table (note the values in the table may be slightly rounded): x 0.00 0.17 0.33 0.50 0.67 0.83 1.00 1.17 1.33 1.50 1.67 1.83 2.00 g(x) 4.00 5.50 6.60 7.00 6.60 5.50

asked by Joe on November 9, 2017
37. ## Math

Suppose f(x)=x^3 and the graph of g(x) is the graph of f(x) shifted vertically up 1 units and horizontally to the right 3 units. Find the Formula fir g(x)

asked by George Carl on February 3, 2018
38. ## algebra

Solve the formula for the variable given.Then use the given information to find the value of the variable. A=2πrw Find r if w=4ft And A=120ft square. Please someone help me with this!!!

asked by katy on August 22, 2013
39. ## physics

The formula 2^2n-1 denotes the nthe term of a sequence. which term of the sequence is 2^21 a). 11th b). 6th c). 10th d). 8th?

asked by poppy👌🤔 on May 8, 2019
40. ## Science (Physics)

Two resistors 3ohms and 6ohms are connected in parallel across a 6V battery, what is the current flow through the 3ohms resistors? Just the formula please.

asked by Tyler on August 3, 2014
41. ## algebra

Solve the formula for the variable given.then use the info to find the value of variable. S=πr(h+k) Find h if r=2,k=3,and S=50 I really don't know how to answer this kind of questions :(

asked by katy on August 22, 2013
42. ## physics

What is the formula to calculate the height of fluid in cylinder if the volume of fluid is known, and the length and diameter of cylinder is known? Kindly help please!

asked by ChrismB on June 4, 2016
43. ## Calculus

How can i factor x^3 - 3x^2 + x -4? I tried the factor theorem method, but it doesnt work. Is there another method for factoring cubic equation? Is there a formula that one can use?

asked by LALA on April 3, 2010
44. ## Math

Part A -An adult dose is 75mg Part B- 500mg (adult) 187mg (child) How I come up with a formula for this problem?

asked by Maria on July 17, 2014
45. ## International Finance

what is the general formula for figuring out this question? If the dinar devalues against the US dollar by 45%, the US dollar will appreciate against the dinar by...? I'm not getting this at all, and the book is not helping!!

asked by Annie on October 18, 2007
46. ## Chemistry HELP! IMLOST

The density of a gas containing chlorine and oxygen has a density of 2.875 g/L at 754.5 mm Hg and 11(degress C). What is the most likely molecular formula of the gas?

asked by Toni Jones on March 28, 2011
47. ## algebra

Find all points on the x-axis that are 10 units from the point (7, 6). (Hint: First write the distance formula with (7, 6) as one of the points and (x, 0) as the other point.)

asked by Barbara on October 12, 2014
48. ## science

write the correct formula, balance the equation, and name the type of equation. potassium + sulfur + potassium sulfide

asked by ty on August 31, 2010
49. ## College Chemistry

What is pH buffer of 0.1 mol L-1 Na2HPO4/O.15 mol L-1 KH2PO4? KH2PO4? Given Ka(H2PO4-) = 6.2 x 10-8). I would like to know the correct formula, steps for the answer Thank you

asked by Helen on October 20, 2010
50. ## Excel computers

How would you write a formula to multiply the number in cell k4 times the standard deviation of the number in cell z2 through z10

asked by Kimberly on January 25, 2013
51. ## Algebra

Find all points on the x-axis that are 10 units from the point (7, 6). (Hint: First write the distance formula with (7, 6) as one of the points and (x, 0) as the other point.)

asked by Kim on October 6, 2014
52. ## chemistry

What is the correct formula for an ionic compound that contains aluminum ions and sulfide ions? The answer is Al2S3. How did they get this answer?

asked by Danielle on September 9, 2010
53. ## Physics

Lieutenant Wharf, of mass 98.3 kg, is outside the space shuttlecraft Enigma trying to repair a broken warp engine nacelle. He finds he has drifted away from the shuttle while carelessly daydreaming. Miraculously, a stray photon torpedo casing (mass 2,020

asked by Juhi on April 22, 2016
54. ## Physıcs

Formula force calculatıng force

asked by Murtala on February 2, 2014
55. ## Math situations

asked by Sandra M on March 31, 2012
56. ## math

.68 inch to the nearest eight of an inch. Is there a formula?

asked by CLYDE 2 on February 28, 2012
57. ## volta

What the formula for finding the % of 35% of 22. I know the answer is 7.7, but how do u get that answer

asked by tyler on January 11, 2012
58. ## Math

Solve each formula for the indicated variable V=xr^2h solve for h. HElp please.

asked by Larry on September 29, 2008
59. ## College Algebra

need help finding the distance using the distance formula please!!! (0,0) (x,y)

asked by Marie on February 23, 2013
60. ## Geometry

How to find formula to find areas?

61. ## math

S(n) = 1+4+9+16+25+...+n^2 find the formula so it will look like T(n)=an^3+bn^2+cn+d and also find what a, b, c, d equals

asked by ann on July 11, 2008
62. ## math

In AP FIRST TERM IS 15 AND LAST TERM IS 85 .WHAT IS THE VALUE OF DIFFERENCE THE FORMULA IS b-a/n-1

asked by manmath on December 13, 2017
63. ## Math

Use the percent​ formula, A=PB: A is Percent of B 30% of what number of 87%. Need help.

asked by Tim on March 11, 2017
64. ## physics

A copper calorimeter of mass 150g was half filled with water of mass 300g and temperature 0^C. 5g of ice at 0^C was added to the content, later some steam was passed into the mixture and the temperature rose by 20^C. Calculate the quantity of steam added.

asked by tomiwa on March 2, 2014
65. ## physics

One cubic centimetre (1.0 cm3) of water has a mass of 1.0 × 10−3 kg. (a) Determine the mass of 1.0 litre of water. Assuming that biological substances are 98% water, estimate the masses of (b) a cell with a diameter of 1.0 μm, (c) a human kidney, and

asked by Jas on September 11, 2015
66. ## physics

A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in

asked by Leticia on October 14, 2013
67. ## physics

A particle A of mass 2kg lies on the edge of a table of height 1m. It is connected by a light inelastic string of length 0.7m to a second particle B of mass 3 kg which is lying on table 0.25m from the edge. If A is pushed gently so that it starts falling

asked by Prabhjot on October 25, 2011
68. ## Chemistry

A solution was prepared by dissolving 72.0 g of glucose in 300.0 g of water. The ressulting solution was found to have a boiling point of 100.68C at 1 atm. Calculate the molar mass of glucose. For water Kb= 0.51 Ckg/mol. I know the molar mass of glucose if

asked by Naomi on June 8, 2018
69. ## Chemistry

I just completed a titration lab and the balanced equation is (8H^+)+MnO4^- + 5Fe (^2+) ---> Mn + 4 H20 + 5 Fe(^3+) I'm supposed to calculate the moles of permanganate, Fe^2+ and the mass of iron from the sample. The volume of permanganate is 33.5, and the

asked by Sven on September 3, 2007
70. ## Physics

Skier A of mass 71kg slides down a slope and makes a completely inelastic collision with Skier B, who is stationary, and has a mass of 55kg.Immediately after the collision both skiers have a speed of 5.8m/s. a)Find the speed of skier A immediately before

asked by Christine on October 25, 2015
71. ## Rate Constants

I'm really stuck with this one. Here's the rate law and the data that is needed. I appreciate any help Rate= k[I2]X{[H+]Y[CH3COCH3]Z Trial Volume of 0.0010 M I2 Volume of 0.050 M HCl Volume of 1.0 M acetone Volume of water Temperature (degrees C) Reaction

asked by Amy on February 12, 2013
72. ## physics

Adolf and Ed are wearing harnesses and are hanging at rest from the ceiling by means of ropes attached to them. Face to face, they push off against one another. Adolf has a mass of 104 kg, and Ed has a mass of 80 kg. Following the push, Adolf swings upward

asked by Tara on February 25, 2016
73. ## phy

A 3.50 kg block on a smooth tabletop is attached by a string to a hanging block of mass 2.80 kg. The blocks are released from rest and allowed to move freely. 1-Is the tension in the string greater than, less than, or equal to the weight of the hanging

asked by ivan on July 18, 2011
74. ## Chemistry

A sodium hydroxide sample is contaminated with sodium chloride. A 0.240 gram sample of this impure sample is dissolved in water and titrated with 21.50 mL of 0.130 M H2C2O4. Calculate the percent sadium hydroxide in the impure sample [(mass of NaOH in

asked by Sam on July 15, 2015
75. ## physics

I calculated parts a, b, c, but cannot figure out d. I tried combining all the forces and adding them but I am missing something? There is an 18 kg box on a 32degree incline. a HORIZONTAL force of 150 N is given to the box a) How much work is done by the

asked by Aileen on November 7, 2010
76. ## Science/Math??

If object A has mass Ma and object B has mass Mb, then the force F on object A is directed toward object B and has magnitude of F = G Ma Mb / r2 That would be the correct gravitational force, and the direction IS directed toward object B. True

asked by Joey on July 28, 2007
77. ## physics

I have tried the ideal gas law to find the temp and Pressure so that i could then find the work but i am not getting the right answer in the end. any suggestions? 3.1 One kilogram of air in a piston-cylinder device undegoes a thermodynamic cycle composed

asked by jody on June 18, 2007
78. ## Physics

Two identical rollers are mounted with their axes parallel, in a horizontal plane, a distance 2d = 40.4 cm apart. The two rollers are rotating inwardly at the top with the same angular speed. A long uniform board is laid across them in a direction

asked by Jennie on January 4, 2012
79. ## Physics

Two identical rollers are mounted with their axes parallel, in a horizontal plane, a distance 2d = 40.4 cm apart. The two rollers are rotating inwardly at the top with the same angular speed. A long uniform board is laid across them in a direction

asked by Jennie on January 4, 2012
80. ## Physics Gravitation Question

Vesta, a minor planet in the Asteriod Belt between Mars and Jupiter, has a mean radius of 525 km and mass of 2.59 X 10^20 kg. The Dawn Spacecraft (m = 1240 kg) orbited Vesta in 2011 & 2012. Find the local acceleration due to gravity at the mean surface of

asked by Anon on November 5, 2016
81. ## College physics - Center of mass

College Physics- Center of Mass? The objects in the figure below are constructed of uniform wire bent into the shapes shown (Figure 1) . Each peice has a length of 0.15 . There are two objects that we need to figure out the x- and y-coordinates of the

asked by Herosugar on October 10, 2012
82. ## Physics

Two identical rollers are mounted with their axes parallel, in a horizontal plane, a distance 2d = 40.4 cm apart. The two rollers are rotating inwardly at the top with the same angular speed. A long uniform board is laid across them in a direction

asked by Jennie on January 5, 2012
83. ## Physics

Two identical rollers are mounted with their axes parallel, in a horizontal plane, a distance 2d = 40.4 cm apart. The two rollers are rotating inwardly at the top with the same angular speed. A long uniform board is laid across them in a direction

asked by Jennie on January 3, 2012
84. ## Physics

A jet aircraft is traveling at 180 m/s in horizontal flight. The engine takes in air at a rate of 77.0 kg/s and burns fuel at a rate of 3.15 kg/s. The exhaust gases are ejected at 595 m/s relative to the speed of the aircraft. Find the thrust of the jet

asked by mymi on October 11, 2011
85. ## physics

A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2

asked by janny on February 19, 2012
86. ## chemisry

How many grams are thee in 2.3times 10to the 23 power What units are you measuring with 2.3 * 10^23? Are they pounds, ounces, kilgromas or something else? Without this information, it is impossible to answer your question. Please repost with the needed

asked by taylor on January 5, 2007
87. ## Physics

Why do your vowels examples ("aaah", "eee", "uhh") sound different then when I make them? Explain. Tension, mass density and the length of our vocal cords differ so would that be the reason why they sound different? For instance: a child's voice is usually

asked by Andrea on March 1, 2008
88. ## 8.01x Classical Mechanics

Sliding Blocks (14 points possible) A small cube of mass 1.0 kg slides down a circular and frictionless track of radius 0.6 m cut into a large block of mass 4.0 kg as shown in the figure below. The large block rests on a horizontal and frictionless table.

asked by Anonymous on January 11, 2014
89. ## physics

Hi! I have a problem for physics homework and I though I knew how to solve it but apparently it is wrong, please help! 'Two cars, one of mass 1000 kg, and the second of mass 2400 kg, are moving at right angles to each other when they collide and stick

asked by Ty on December 13, 2007
90. ## Chem

Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used to produce 1.0x10^6 kg

asked by Shawn on January 26, 2007
91. ## Physics

This has been posted before but I need someone to elaborate please. A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes

asked by Pandy on September 30, 2010
92. ## Chemistry

1.a radioscope which is neutron poor and very heavy is most likely to decay by? alpha , beta, electron capture, positron emission 2. When a 235-U nucleus is struck by a thermal neutron, fission occurs often with the release of neutrons. If fission

asked by keith on April 27, 2007
93. ## physics

Why is this following situation impossible? A normally proportioned adult walks briskly along a straight line in the +x direction, standing straight up and holding his right arm vertical and next to his body so that the arm does not swing. His right hand

asked by Ania on October 18, 2012
94. ## science

An atom that has the same amount of atoms of each element on both sides of the reaction obeys what law? law of conservation of energy law of conservation of mass law of conservation of temperature law of conservation of atoms I know the Answer law of

asked by Miracle Mckeller on October 26, 2016
95. ## Algebra

I need to set up this problem algebraically. Also I can't figure out to work it out. It's a relative rate problem. Bob leaves Bismarck traveling east along Interstate 94 at 65 mph. At the same time Tony leaves Fargo traveling west on Interstate 94. Since

asked by Jillian on April 5, 2009
96. ## econ (economyst)

The real exchange rate between Canada and U.S. must be unity if LOOP is found held for all the common goods that are consumed in both countries. True or False? Economyst, last time you said it is false, but if LOOP holds for each good in the basket, it

asked by econ on May 31, 2008
97. ## Physics

A ball acquires a horizontal speed of 12m/sec when a force is applied for a distance of .50m. If the ball has a mass of 1.0kg what is the force applied? ANSWER: 144N....I'm not sure what formulas I'd apply. It takes a force of 109N to life a stone straight

98. ## physics

A person jumps from the roof of a house 4.0- high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.74. 1)If the mass of his torso (excluding legs) is 40 , find his velocity just before

asked by Austin on September 29, 2010
99. ## Physics

A piece of copper ball of mass 30grams at 150 degree celcius is placed in a copper calorimeter of mass 70gams containing 60grams of waterof copper 40degree celcius if the final ofthe mixture is 50degree celcius calculate the specific heat capacity of

asked by Elizabeth Avan on October 31, 2016
100. ## PHYSICS

During heavy rain, a section of a mountainside measuring 5.4 km horizontally (perpendicular to the slope) 0.80 km up along the slope, and 2.1 m deep slips into a valley in a mud slide. Assume that the mud ends up uniformly distributed over a surface area

asked by SARA on February 1, 2013