EM

Light from a sodium lamp ( wavelength= 589 nm) illuminates a narrow slit and is observed on a screen 75 cm behind the slit. The dstance between the first and third dark fringes is 7.5 mm. What is the width (in mm) of the slit? Cant seem to get the answer...

A compound contains only nitrogen and hydrogen and is 87.4% nitrogen by mass. A gaseous sample of the compound has a density of 0.977 g/L at 680. torr and 84.1°C. What is the molecular formula of the compound?

1....How much force needed to bring a 3200 lb car from rest to a velocity of 44 m/s in 8 sec.? 2....A ball with a mass of 2 kg move to the right with a speed of 2 m/s. It hits a ball of mass 0.50 kg which is at rest. After collision the second ball moves...

A person who weigh 500N climbs a flight of straight from the ground to the 4th floor of a building in 40sec. If the height of 4th is 10m find A... power in watts b.....power in Hp

How to find Cross Section Area given x=5 x=-5 y= sqrt(25-x^2) y= -sqrt(25-x^2)

Hi I am trying to help my 4th grade daughter with homework and I am stuck with this question. Please help and explain how you got the answer. Thanks Jill's fish weighs 8 times as much as her parakeet. Together, the pets weigh 63 ounces together. How much...

40% of what is 32?

Elemental S reacts with O2 to form SO3 according to the reaction: 2S+3O2→2SO3 How many O2 molecules are needed to react with 5.27 g of S? Express your answer numerically in units of molecules. =????molecules Part B What is the theoretical yield of SO3 pro...

I've tried that and im still not getting the answer (which is 0.12 mm) =/ i used that formula to give me the theta and i substituted that into the d= lambda/ sin theta

Thank you so much for your help and explaining my wrong answer

Thank you for explaining this to us.

Just a note that DrBob222 is incorrect. In face it the molsH2SO4=1/2mols NaOH. I struggled on this problem and tried to follow DrBob222's other work for a similar problem but again it left me with the wrong answer

So for Part A it would be 1.48694^23? Part B 13.21g? I want to double check to get them right Part C I was able to get them right, thank you so much.