07/03/20

Physics Calculations
Each side of a square is increasing at a rate of 8 cm/s. At what rate is the area of the square increasing when the area of the square is 25 cm2?A plane flying horizontally at an altitude of 1 mi... more
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07/02/20

Physics (Work done by a varying force)
Five kilograms of mangoes is bought on a market and measured using a vertical spring scale that obeys Hookes’s law, it stretches up to 3.00 cm. The mangoes were removed and replaced by kiwi a. If... more
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07/01/20

A 1.20 mol sample of hydrogen gas occupies 23.4L. How many mol of hydrogen are needed to fill a 101.5 L container at the same pressure and temperature?
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07/01/20

If a sample of C3H6 stored in a 2.95-L container at 10.6 atm and 25.0C is transferred to a 6.96-L container at 5.00atm, what is the resulting temperature?

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07/01/20

Calculate the volume of N2 that results when 0.138 L of the gas is heated from 308.0 K to 351.0 K at 3.00 atm.

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06/30/20

Can you tell me how to do this exactly?
Amy is standing next to a 24–foot billboard. She starts walking away at a rate of 2 feet per second. After 6 seconds, she stops because she notices that the end of her shadow meets the end of the... more
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06/16/20

how many moles of silver iodide will be produced from 229 g of calcium iodide?
For the chemical reactionCaI2 + 2AgNO3⟶ 2AgI+ Ca(NO3)2how many moles of silver iodide will be produced from 229 g of calcium iodide?
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06/16/20

How many molecules (not moles) of NH3 are produced from 1.59*10^-4g of H2?
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06/15/20

sketch a qualitatively accurate graphs of the first derivative f'(x) and the second derivative f''(x) from the graphs of f(x).
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06/14/20

PLEASEEE I NEED HELP IN THISSS IT IS URGENTTTT
ve been given $500.00 for your fencing. So first we are going to make as big of a rectangular field as we can with the money that we have for the fencing to surround it. The cost of premium fencing... more
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05/16/20

What is the maximum amount of Hg (in μg ) that can be present in this 10.0 mL sample based on its MCL?
The maximum contaminant level (MCL) set by the EPA of mercury in drinking water is 0.0020 mg/L0.0020 mg/L . Convert the MCL of mercury from milligrams per liter to parts per billion (ppb).converted... more
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05/16/20

How many mL of 1 M HNO3 are needed to neutralize 500 mL of 2.0 M Ca(OH)2?
HNO3****Ca(OH)2********
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05/16/20

Acid Base PH, POH
A shampoo has a pH of 8.39. What is the [H3O^+] in the shampoo?What is the [OH^−] in the shampoo?
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05/06/20

Drawing Amino Acids (Organic Chem)
Draw the tetrapeptide below out in full chemical structure by attaching the four amino acids from your amino in order (this is an application of the characteristic organic reaction Formation of an... more
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05/05/20

Need Help With Physics 2 Questions
Three point charges are arranged along the x-axis. Charge q1= -5.00nc is located at x= 0.300m, and charge q2= -3.50nC is at x= -0.400m. Where along the x-axis can a positive charge q3 be placed and... more
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04/22/19

What are Buckminster fullerenes?
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10/09/18

A dive platform is 10 m above the surface of a pool. A camera is placed to film all the dives. The camera begins recording 1 second before a dive starts and
physic 20 physic 20 physic 20
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10/25/17

a spaceship is traveling at velocity of 5.002x10 to third power miles per second it swiches on its rockets the rockets accelerate
i need help with this physics problem its for introductory physics  
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03/16/17

how many moles of carbon dioxide are produced by the complete combustion of the quantity of ethanol 8.80 gallons of E-85 fuel?
E-85 is an alternative fuel for automobiles and light trucks that consists of 85% (by volume) ethanol, and 15% gasoline. The density of ethanol is .79 g/mol.
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03/16/17

The ball was 3 feet off the ground when she struck it with an initial upward velocity of 24 feet per sec. The equation I have to use is h=-16t^2+vt+h(sub zero)
I need help quick! I have to use the equation to write an equation to model the scenario.
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02/17/17

Resonance structure for NSO
Draw atleast 3 resonance structures for NSO.
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02/17/17

Ionic bond between elements
would you expect the ionic bond that exists between potassium and fluorine to be stronger or weaker than the ionic bond that exists between magnesium and oxygen? And why?
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10/25/15

ATableIsLiftedUpOnOneEndAt30DegreesAboveTheHorizontal.The2kgCenterpeiceIsStillInEquilibruimOnTheTable.WhatIsTheNormalForceOnCenterpeiceWhileRestingAtThisAngle?
Physics question
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01/30/14

Find the limit?
Find the limit of (sin(x+h)-sin(x))/h as h approaches 0.   Answer: cos x   Please show all your work.
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01/30/14

Solve the equation.
Solve the equation.   √¯¯¯x-5 = x - 7
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