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

46,086 questions, page 136
1. ## Physics

Starting from rest, Mr.M's bus achieves a velocity of 25 m/s in a distance of 1.0 km. Find the time and the acceleration. I don't know which formula to use. Delta T = Vf - Vi / Aavg ?

asked by Selena on September 23, 2014
2. ## Chemistry

For the oxidation-reduction reaction equation given here, 2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the formation of one formula unit of product.

asked by Jematormal91 on May 11, 2012
3. ## 3unit maths

Find the equation of the chord of the parabola joining the points with parameters (a)1 and -3 on x=2t, y=t^2 (b)1/2 and 2 on x=4t, y=2t^2 (c)-1 and -2 on x=t, y=1/2t^2 (d)-2 and 4 on x=1/2t^2, y=1/4t^2 Then use the formula y=1/2(p+q)x-apq to obtain the

asked by TRACY-888 on April 6, 2009
4. ## Maths

6%pa compounded semi-annually Principal-\$6000 I need to find out how many interest periods for the amount to grow to \$9500. What is the formula too pleae.

asked by Helen on August 11, 2012
5. ## chemistry

Give the formula for the conjugate base of each acid. a. HSO4- H2SO4- b. H3PO4 H4PO4 c. HPO42- H2PO42- d. HNO3 H2NO3

asked by krystal on February 26, 2012
6. ## algebra

Use a calculator to evaluate an ordinary annuity formula A = m 1 + r n nt − 1 r n for m, r, and t (respectively). Assume monthly payments. (Round your answer to the nearest cent.) \$150; 5%; 40 yr

asked by strayer on May 24, 2014
7. ## College pre calc

Use bionomial formula to find the coefficient of the t^2 m^8 term in the expansion of (3t+m)^10. I got so far this 10C8 x 3^2 x t^2 x m^8 It tell me the next step is here =45 x 9 x t^2 x m^8 where did the 45 come from?? It doesn't explain that to me! The

asked by Feather on November 20, 2015
8. ## algebra

Use a calculator to evaluate an ordinary annuity formula A = m 1 + r n nt − 1 r n for m, r, and t (respectively). Assume monthly payments. (Round your answer to the nearest cent.) \$150; 5%; 40 yr A = \$

asked by Anonymous on May 21, 2014
9. ## algebra

we are using the distance formula right now and i asked my teacher for help on an equation and this quation had a fraction in it and i don't understand how she got her answer. the question that i need help on is: d= the square root of (4-6)^2+(-2/3-2)^2.

asked by Rebecca on April 15, 2008
10. ## geometry

this is a regular pyramid, length is 8, base is 8, side is 4. formula = S=B+1/2Pl total surface area to the nearest tenth thanks guys!

asked by wigums on May 27, 2008
11. ## Algebra 2

Get–Around Cab Company charges \$2.50 upon entry and \$2 per mile. Write the function that represents the cost C of a ride of m miles. I don't know what the formula is?

asked by Priscilla on November 5, 2015
12. ## Math

what is the formula to calculate the yield to maturity? Check this site. http://www.moneychimp.com/articles/finworks/fmbondytm.htm

asked by SERITA on June 27, 2007
13. ## math

Use the formula t = (0.25) s1/2 to find the time t in seconds it will take a stone to drop a distance s of 200 feet. Round your answer to the nearest tenth of a second.

asked by brian on August 20, 2013
14. ## Chemistry

For the oxidation-reduction reaction equation given here, 2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the formation of one formula unit of product.

asked by Jematormal91 on May 10, 2012
15. ## Chemistry

Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH at the equivalence point? I used the HH formula and got pH=7.52+log(.222)=6.87, but its not right.

asked by JUNDY on March 15, 2015
16. ## accounting

I am stumped on my last question which is using the discounted cash flow formula.... what effect will increase the required rate of return on the present value. I'm getting that it will be increased. Is this right?

asked by Alexa on April 27, 2010
17. ## Calculus

State the growth factor in each of the following situations. Canada's population is increasing by 1% per year. How do I calculate this? I think Im supposed to use this formula, but I don't know where to plug in what. tn = ar^n-1

asked by Anonymous on September 21, 2011
18. ## physics

A cat walks along a plank with mass M= 7.00 kg. The plank is supported by two sawhorses. The center of mass of the plank is a distance d1= 0.850 m to the left of sawhorse B. When the cat is a distance d2= 1.11 m to the right of sawhorse B, the plank just

asked by sinti on May 9, 2017
19. ## college chem

A 1.10g- sample contains only glucose and sucrose . When the sample is dissolved in water to a total solution volume of 25.0ML , the osmotic pressure of the solution is 3.78atm at 298K a.What is the percent by mass of glucose in the sample? b.What is the

asked by mm on January 25, 2010
20. ## Chemistry

For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

asked by Hannah on October 23, 2011

For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

asked by Hannah on October 23, 2011
22. ## physics

A 6.25-gram bullet travels at 365 m/s. It hits and enters a 4.50-kg crate. The crates slides 0.15m along a floor until it comes to rest. Find the friction force between the crate and the floor I used p=mv to get momentum and got 2.28125 N•s I calculated

asked by Anonymous on October 15, 2017
23. ## chemistry

i am calculating an unknown acid for both monoprotic and diprotic assumptions. I calculated the monoprotic by multiplying the M NaOH by the liters of NaOH used to titrate. 0.0984M x 0.02396= 0.00236. I then take the unknown sample weight and divide it by

asked by nicole on October 25, 2010
24. ## Circuits

I need to calculate the voltage through the resistor and the voltage through the inductor of an RL series circuit for different frequencies. The voltage of the source is 2.5 V. The inductor is at the top and has an inductance of .200 H and the resistor is

asked by Heather on March 24, 2012
25. ## Circuits

I need to calculate the voltage through the resistor and the voltage through the inductor of an RL series circuit for different frequencies. The voltage of the source is 2.5 V. The inductor is at the top and has an inductance of .200 H and the resistor is

asked by Heather on March 24, 2012
26. ## physics

A horizontal spring mass system is set up to keep time so that it goes from one side to the other in 6 seconds. The mass used in this system is 0.69 kg. The distance from one side to the other is 2.4 m. What spring constant should be used if it is to

asked by sunny on December 31, 2012
27. ## physics

a 3.55 kg sample of an alloy is heated to 295 degree and plunged into an aluminium vessel containing 10.0L of water. the initial temperature of the vessel and water is 19 degree.the mass of the aluminium vessel is 2.1 kg and the specific heat of aluminium

asked by Twinkle on April 26, 2007
28. ## Chemistry

Question: a sample is to be analyzed for its chloride content by the precipitation and weighing of silver chloride. what mass of the sample should be used so that the mass of the precipitate will be equal to the percent of chloride in the sample. How would

asked by Anonymous on April 23, 2009
29. ## Chem

A 10.0% by mass H2SO4(aq) solution has a density of 1.07 g·cm-3. How many milliliters of solution contain 8.34 g of H2SO4? What mass (in grams) of H2SO4 is in 248 mL of solution? It's been a while since I have had a chem class...so sorry if this seems

asked by Cairy on February 15, 2010
30. ## science

what mass of silver(1)nitrate is needed to prepare 100cm3 of silver(1)nitrate solution,concentration 0.2mol/dm3? the mass of one mole of silver nitrate is 170g please help me with this question

asked by aminah on January 7, 2017
31. ## physics

Which of the following is correct for the energy levels in an atomic system? Choose one answer. a. The energy value increases with the distance from the nucleus. b. The energy value decreases with the distance from the nucleus. c. The energy value remains

32. ## physics

A) What is the minimum speed, relative to the Sun, necessary for a spacecraft to escape the solar system if it starts at the Earth's orbit? B) Voyager I achieved a maximum speed of 125 000 km/h on its way to photograph Jupiter. Beyond what distance from

asked by jean on May 30, 2007
33. ## Chemistry

If the same solute is dissolved in two different solvents to the same concentration and the same temperature, the osmotic pressure ____ will be the same for both. will be different. may be the same or different, depending on the solute. will be lower in

asked by Anonymous on February 25, 2009
34. ## Physics Energy and Work Done

A 390-N child is in a swing that is attached to a pair of ropes 1.9 m long. Find the gravitational potential energy (in JOULES) of the child–Earth system relative to the child's lowest position at the following times. A) when the ropes are horizontal B)

asked by Mofied on November 1, 2011
35. ## Physics

help. A rescue helicopter drops a package of emergency ration to a stranded party on the ground. If the helicopter is traveling horizontally at 40m/sec at a height of 100 m above the ground, where does the package strike the ground relative to the point at

asked by Shahab Mirza on October 17, 2014
36. ## Physics - Newtons laws

A block (mass m1 = 8kg) is moving on an inclined plane, coefficient of kinetic friction of 0.45, whose angle is 30degrees. This block is connected to a second block (mass m2 = 22kg) by a cord that passes over a small frictionless pulley. Find the

asked by Anonymous on February 24, 2012
37. ## Physics

A railroad car with a mass of 12400 kg collides and couples with a second car of mass 18700 kg that is initially at rest. The first car is moving with a speed of 7.7 m/s prior to the collision. (a) What is the initial momentum of the first car? (b) If

asked by Anonymous on July 7, 2014
38. ## Physics plzzzzzzzzz help

Ideal Gas Law: PV = N k T ---> N = PV/(k T) N = 1.387*10^(29) mass of one helium atom is approximately 4*u = 6.642*10^27 kg 4u*N = 921 kg A Goodyear blimp typically contains 4770 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. The temperature

asked by Count Iblis on December 1, 2006
39. ## Science

Equation for the reaction which took place: Hydrochloric acid + calcium carbonate -> calcium chloride + carbon dioxide + water When the reaction stopped the total mass had decreased from 102.5g to 101.4g. some water had evaporated from the beaker what else

asked by afghandon on June 29, 2014
40. ## Physics

A pendulum is made of two discs, one with mass M and radius R and the other with mass 2M and radius R, which are separated by a massless rod. The lighter disc is pivoted through its centre by a small pin. The discs lie on the same plane and their centres

asked by Kagiso Setuke on March 18, 2011
41. ## Physics

A bullet of mass 10g travelling horizontally at a speed of 100m/s embeds itself in a block of wood of mass 990g suspended by strings so that it can swing freely find: a.the vertical height through which the block rises. B.how much of the bullet energy

asked by Oterhia on September 1, 2012
42. ## math

A mass suspended on a spring will exhibit sinusoidal motion when it moves. If the mass on a spring is 85cm off the ground at its highest position and 41cm off the ground at its lowest position and takes 3.0s to go from the top to the bottom and back again,

asked by stephy on January 22, 2011
43. ## physics

the brake linings of the wheels of a car have total mass 4.8kg and specific heat capacity 1200 J kg -1 K-1. calculate the maximum possible temperature rise of the brake linings when the car (of mass 800kg) travelling at 15 ms-1 is brought to rest by

asked by jeremy on January 25, 2012
44. ## Physics

A cart of mass m1 = 12 kg slides down a frictionless ramp and is made to collide with a second cart of mass m2 = 19 kg, which then heads into a vertical loop of radius 0.23 m. Determine the height h from which cart 1 would need to start to make sure that

asked by Ryan on October 13, 2013
45. ## chemistry

2C2H6(g)+7O2(g)--> 4Co2 (g)+6H2O(l) A) if 3.00 moles of C2H6 and 9.00 moles of O2 are introducedinto an empty container at 32.0 degree C and then ignited tointiate the above reaction calculate the mass of water that isproduced. B) if the container volume

asked by Anonymous on December 8, 2014
46. ## Physics

A bullet with mass (m) is fired vertically into a block of wood with mass (M) that is hanging from a rope at rest. If the billet has an initial speed Vi (initial velocity) find the height (h) that the block will swing into the air after the bullet becomes

asked by Stephy on February 26, 2017
47. ## physics

Im trying to study for my physics exam by doing some extra problems, however im stuck with this one. any help is much appreciated Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of each sphere is 4.62 x 10-6 kg. The

asked by John on September 28, 2012
48. ## chemistry

2C2H6(g)+7O2(g)--> 4Co2 (g)+6H2O(l) A) if 3.00 moles of C2H6 and 9.00 moles of O2 are introducedinto an empty container at 32.0 degree C and then ignited tointiate the above reaction calculate the mass of water that isproduced. B) if the container volume

asked by Anonymous on December 8, 2014
49. ## physics

A piece of copper ball of mass 20g at 200°c is placed in a copper calorimeter of mass 60g containing 50g of water at 30°c ignoring heat losses.calculate the final steady temperature of mixture.(specific heat capacity of water=4.2jg-1k-1)

asked by Abiodun on January 29, 2017
50. ## Physics

A low friction cart of mass m, traveling at speed v, collides (perfectly) elastically with a cart of triple the mass, initially at rest. What is the result of this collision? (What are the final, after-collision velocities?) Do NOT use the derived

51. ## in chem

calculate the mass of this sample: 1.05 * 10 to the power of 26 atoms of neon, Ne(g) I know that I have to first divide by the avagadros constant, then once get the moles I need to multiply by the molar mass of neon to get the grams, I did that sevral

asked by Help on December 24, 2012
52. ## Physics

A small block of mass m1 = 0.500 kg is released from rest at the top of acurved-shaped frictionless wedge of mass m2 =3.00 kg, which sits on a frictionless horizontal surface as inFigure P9.60a. When the block leaves the wedge, its velocity ismeasured to

asked by Marie on November 14, 2011
53. ## physics

You are standing on a merry-go-round of mass 500 kg and radius 2 m. Initially you are at 1.2 m from the center and you are rotating with an angular speed of 45 rad/s. (a) If you move in to a point 0.2 m from the center, what speed will you be rotating at?

asked by anonymous on November 19, 2011
54. ## Physics

In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.1 m/s and collides with an initially stationary, fully loaded boxcar of mass 4.3m. The two cars couple together upon collision. (a) What is the speed of

asked by Priyanka on March 16, 2012
55. ## Chemistry

The Cu2+ ions in this experiment are produced by the reaction of 1.0g of copper. Information already found out .016 mol Cu2+ produced Overall reaction is Cu2+(aq)+Cl-(aq)+Cu(s)=2 CuCl(s) Maximum mass of CuCl that can be prepared from the reaction sequence

asked by Julie on October 23, 2012
56. ## Precalc

I am having trouble figuring out this question Jan observes a buoy bobbing up and down through a total amplitude of 8 feet. Beginning at the top of the wave, if the buoy completes a full cycle every 8 seconds, what is the height of the buoy relative to its

asked by anna on August 5, 2011
57. ## Physics

When an object of mass m1 is hung on a vertical spring and set into vertical simple harmonic motion, its frequency is 12 Hz. When another object of mass m2 is hung on the spring along with m1, the frequency of the motion is 4 Hz. Find the ratio m2/m1 of

asked by Papito on April 23, 2007
58. ## Physics

A 0.260-kg piece of aluminum that has a temperature of -165 °C is added to 1.4 kg of water that has a temperature of 3.0 °C. At equilibrium the temperature is 0 °C. Ignoring the container and assuming that the heat exchanged with the surroundings is

asked by Sara on November 17, 2006
59. ## Physics

I have a hard time solving this problem. The weight of an object at the surface of a planet is proportional to the planet's mass and inversely proportional to the square of the radius of the planet. Jupiter's radius is 11 times Earth's and its mass is 320

asked by Nisar on August 28, 2005
60. ## Chemistry

Can someone please help me complete these calculations for my lab; I am having some trouble. A. Standardization of Na2S2O3 -Mass of KIO3 in 100mL = 0.09600g -Calculate Molarity of KIO3= ? Please check: 0.09600g/(214.0g/mol)=4.486x 10^-4 mol -4.486

asked by Bryant on March 6, 2011
61. ## Physics

A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.1 kg and the sign has a mass of ms = 16.4 kg. The length of the beam is L = 2.83 m. The sign is attached at the very end of the beam, but the horizontal wire holding up

asked by John on March 31, 2013
62. ## Physics

A box of mass 50.0 kg is connected to a second box with a mass of 54.0 kg. Both are sitting on a horizontal surface and the coefficient of kinetic friction between the surface and each box is 0.51. If the second box is pulled away from the first box with a

asked by Anonymous on March 24, 2014
63. ## drwls,math

so you are saying that i should label p = 30 i = 0.0125/12 = 0.0010416666666666666666666666666667 n = 12(3) = 36 then plug it into what formula ? Problem: Stereo shack sells a stereo system for \$600 down and monthly payments of \$30 for the next 3 yrs. In

asked by student on June 22, 2007
64. ## physics

1 The specific heat of a substance at its boiling point or melting point Is 0 Is infinity Is negative lies between 0 and 1 2 A unit mass of solid converted to liquid at its melting point. Heat is required for this process is Specific heat Latent heat of

asked by promise on April 12, 2015
65. ## physics

1 The specific heat of a substance at its boiling point or melting point Is 0 Is infinity Is negative lies between 0 and 1 2 A unit mass of solid converted to liquid at its melting point. Heat is required for this process is Specific heat Latent heat of

asked by solomon on April 17, 2015
66. ## physics

Two carts are involved in an elastic collision. Cart A with mass 0.55 kg is moving towards Cart B with mass 0.55 kg, which is initially at rest. Cart A stops after the collision and Cart B begins to move. What is the final kinetic energy of Cart B?

67. ## psychology

Recent neuroimaging research indicates that people with OCD show increased levels of grey matter in the _____ and the _____ relative to those who do not have OCD. 1)splenium; corpus collosum 2)locus ceruleus; hypothalamus 3)thalamus; left frontal cortex

asked by kelly on December 9, 2012
68. ## chemistry

A student generates H2(g) over water using the reaction between zinc and hydrochloric acid Zn(s)+ 2HCl(aq)---> ZnCl2(aq)+ H2(g) Data: Mass of vial and zinc 15.5082 mass of vial 15.3972 mass of zinc 0.111 final burette reading 45.30mL barometric pressure:

asked by Yuli on November 23, 2011
69. ## college class

What are the most significant similaritiesbetween the Chinese American and JApanese American (cultural) experiences? What are the differences? Choose from any of the following when considering similarities and Differences: Level of assimilation Relative

asked by dawn on October 14, 2007
70. ## Chemistry

In regards to atomic emission spectroscopy: Explain why the intensity of the color gets brighter when the metal salt concentration is higher. Salt is any ionic compound that has positive ions(called cations) and their associated negative ions (called

asked by chrisalis on January 12, 2008
71. ## Physics

A simple Atwood’s machine uses a massless pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is 4.1 m/s at the end of 7.6 s. At that time, the kinetic energy of the system is 86 J and each mass has moved a distance of 15.58

asked by Maxx on October 31, 2011
72. ## Math

The area of a regular pentagon with a perimeter of 35 units. Join the centre to each vertex to form 5 eq Join the centre to each vertex to form 5 equal triangles. Consider one of those triangles the central angle is 72º and each of the other two equal

asked by Kate on April 29, 2007
73. ## Physics

Two spaceships A and B are exploring a new planet. Relative to this planet, spaceship A has a speed of 0.54c, and spaceship B has a speed of 0.74c. What is the ratio DA/DB of the values for the planet's diameter that each spaceship measures in a direction

asked by Beth on July 21, 2012
74. ## Statistics

a Rollercoaster's auditors estimate that the average daily loss from those illegally riding without tickets is at lease (greater or equal) \$295, but wants to determine the accuracy of this statistic. The company researcher takes a random sample of losses

asked by Calyssa on November 5, 2014
75. ## Physics

A cannon of mass 200kg, fires a cannonball with a mass of 10kg. The cannon ball leaves the barrel of the cannon with a velocity of 60 m/s. Using the law of conservation of momentum , explain what happens to the cannon when the cannon ball is fired. (Answer

asked by Nelly on March 22, 2011
76. ## chemistry

A small quantity of hydrochloric acid and a large quantity of limestone chips (CaCO3) are reacted on a beaker, which was placed on the pan of a balance. The mass of the beaker and its contents were recorded every half minute. (a) Write a chemical equation

asked by Shane on September 16, 2014
77. ## Physics

the question is to write down a relationship for the potential energy of a body of mass m, when it is a distance r from the center of mass M and radius R.explain all symbols used and show that if a body is to escape the gravitational influence of the

asked by Anya on December 16, 2008
78. ## i need help i couldnt figure this out...

A block of mass m = 3 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 6 kg and radius R = 6 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley,

asked by samJoint on April 2, 2011
79. ## physics

two bumper cars in an amusement park ride collide elastically as one approaches the other directly from the rear. car A has a mass of 500kg and carB 600kg, owing to fidderences in passenger mass. if car A approaches at 4m/s and car B is moving at 3.2 m/s,

asked by Nat on April 25, 2009
80. ## physics

A mass m is gently placed on the end of a freely hanging spring. The mass then falls 21.3 cm before it stops and begins to rise. What is the frequency of the oscillation? I found the same question (with a different length) posted on here, but following the

asked by Abby on June 12, 2014
81. ## Physics

When man stands on a bathroom scale here on Earth, it reads 560N . Assume each planet to be a perfect sphere with the following parameters. What would his mass be on Mars if Mars has a mass of 6.419 x 10^23 kg and a radius of 3.396 x10^6 m? and what is the

asked by Derp on February 12, 2015
82. ## physics

The sun rotates around the center of the milky way galaxy at a distance of about 30,000 light years (1ly= 9.5*10^15m). if it takes about 200 million years to make one rotation, estimate the mass of our galaxy. Assume that the mass distribution of galaxy is

asked by jason on October 25, 2008
83. ## Chemistry

3.92g of a nondissociating compound are dissolved in 400.g of liquid benzene. The freezing point of the solution is 5.19 degrees celsius. Calculate the molar mass of the compound. (The freezing point of the pure benzene is 5.50 degrees celsius and its

asked by Cassie on March 20, 2011
84. ## Chemistry

A mass of 0.4113 g of an unknown acid, HA, is titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH, what is the molar mass of the acid?

asked by Tiffany on April 28, 2012
85. ## science

A sphere of radius 4 cm iss carved from a homogenous sphere of radius 8cm and mass 160g. the mass of the smaller sphere is

asked by navneet on September 24, 2012
86. ## Physics-mechanics

Two spheres are placed so that their centers are 2.6m apart. the force bvetween the two spheres is 2.75 x 10 to the power of negative 12 Newton.What is the mass of each sphere if one sphere is twice the mass of the other sphere?

asked by Rebecca on December 24, 2012
87. ## physics

When a 0.30-kg mass is attached to a vertical spring, the spring stretches by 15 cm. How much mass (total) must be attached to the spring to result in a 0.86-s period of oscillation?

asked by aok on November 18, 2010
88. ## fundinjobo high science

a mass of 80 grams of hydrogen gas is heated with nitrogen gas to produce ammonia gas .what is the mass of ammonia that will be produced

asked by makhosazane on August 14, 2014
89. ## Chemistry

At 25 degree celsius, which balloon has the greater volume, an oxygen balloon O2 at 1.2 atm with a mass of 16.0 g, or helium He balloon at 1.2 atm with a mass of 2.0 g?

asked by Michele on March 10, 2017
90. ## physics

A particle of mass 0.2kg is found to stretch a certain spring by 5.0 cm. a. What is the force constant of the spring? b. By how much will a 1kg mass stretch the spring.

asked by Hannah on December 9, 2014
91. ## physical science

a piece of metal has a mass of 85 cg and a volume of 450L. What is its density in g/cm^3? What would be the mass of 300cm^3 of this metal? What would be the volume of 200 ounces of this metal?

asked by anita on March 3, 2016
92. ## physics

the mass of the sun is 2×10^30kg.the mass of a proton is 2×10^-27kg.if the sun was made only of protons.calculate the number of protons in the sun?

asked by Anonymous on March 21, 2015
93. ## Physics

How would I go about calculating the acceleration of a mass being pulled up an inclined plane at an angle. Given - mass, and presumably angles So the object is being pulled up an angle at another angle.

asked by Cait on December 6, 2009
94. ## Chemistry - Density

Automobile batteries contain sulfuric acid. Calculate the number of grams of sulfuric acid in 0.500L of battery acid if the solution has a density of 1.28g/mL and is 38% H2SO4 (small numbers) by mass? Can you please answer this for me? density = 1.28 g/mL

asked by Tracey on October 5, 2006

For a batch of apples containing 100 apples the mean mass is 8 gm. For half number of apples selected from 100 apples the mean mass is 10 gm. Find the mean mass of other half number of apples

asked by Aye on August 28, 2014

For a batch of apples containing 100 apples the mean mass is 8 gm. For half number of apples selected from 100 apples the mean mass is 10 gm. Find the mean mass of other half number of apples

asked by Aye on August 28, 2014
97. ## BOOKS.. english

Explain how John Hersey blended characteristics of fiction and nonfiction in Hiroshima. How does this combination of genres help Hersey convey his feelings about the atomic attack on Hiroshima? Write a short essay that explains your answer. Support your

asked by tara on March 11, 2011
98. ## Math

1. Sally was able to eat 5/8 of her lunch. John ate 75% of his lunch. Who are more of their lunch? a. John b. Sally c. They both ate the same number amount d. The amount cannot be calculated

asked by ali on October 4, 2017
99. ## Chemistry

What is the mass of 14.7 moles of H2O? What is the mass of 7.2 Liters of H2O?

asked by Helen on May 22, 2012
100. ## chemistry

what is the molar mass of a gas if 26.0L of the gas has a mass of 43.6g at 1.10 atm and 10.0 C?

asked by dee on May 7, 2011