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Methane the principal component of natural gas is used is used for heating and cooking. The combustion process is CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l). If 12.1 moles of CH4 react with oxygen, what
A uniform electric field of magnitude 380 N/C pointing in the positive x-direction acts on an electron, What is the work done by the field on the electron
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. How many ozone molecules are present in 1.00 L of air under the stratospheric ozone conditions of 227 K tempera
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops, which have a typical radius of 10 µm. How much mass does the water in the cloud have
Deduce from these data the corresponding equation and write the formulas for the oxide and sulfate of M. Using the smallest whole number coefficients write the balanced equation for the reaction of
During heavy rain, a rectangular section of a mountainside measuring 2.8 km horizontally, 0.80 km up along the slope, What is the mass of the mud sitting above an area of 4.0 m2 in that section
Cyclopropane, C3H6 is an anesthetic given by inhalation. How many grams are in 0.23 mole of cyclopropane
Hydraulic engineers often use, as a unit of volume of water, the "acre-foot", What volume of water, in acre-feet, fell on the town
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. What is the mass of the heaviest rock that, in perfectly still water, won't si
A first order reaction has a rate constant of 0.164 at 25 degrees C and 5.62 at 41 Degrees C. Calculate the value of the activation energy in KILOJOULES
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. How much energy is required to boil away M kg of water
A first order reaction has a rate constant of 0.251 at 17 degrees C. Given that the Arrhenius constant for the reaction is 8.18 x 10^11 sec^-1, calculate the value of the activation energy in KILOJO
Calculate the formula mass of each compound given below. Keep at least one decimal place in atomic masses from the periodic table.
An air conditioner is used to keep the interior of a house at a temperature of 25C while the outside temperature is 34C, what is the mechanical power required to keep the house cool?
how do i calculate delta G at a given temperature when delta H and delta S remain unchanged
Two conductors having net charges of +19.0 µC and -19.0 µC have a potential difference of 19.0 V between them. Determine the capacitance of the system.
Dry ice is solid carbon dioxide. A 1.87g sample of dry ice is placed in an evacuated 4.03 L vessel at 22 degrees C. Calculate the pressure inside the vessel after all the dry ice has been converted
a gas at 763 mmhg and 31 degrees C occupies a volume of 4.98 L. Calculate its volume at STP in g/mole
methane the principal component of natural gas is used is used for heating and cooking. The combustion process is CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l). If 12.1 moles of CH4 react with oxygen, what
In a typical game of squash, two people hit a soft rubber ball at a wall until they are about to drop due to dehydration and exhaustion. What will be the temperature increase of the ball after one bo
A compound contains C, H and S. Elemental analysis performed on 172.5mg sample produced 299.0mg CO2 and 163.2mg H2O. What is the correct empirical formula
A block of mass 2.0 kg is pushed against a vertical wall by a horizontal push (P) of 50.0 N. Find the force AND the direction of the friction
what is the oxidizing and reducing agent 3C2H5OH(aq) +2Cr2O7^2-(aq)+16H^+(aq)-->3CH3CO2H(aq)+4Cr^3+(aq)+11H2)(l)
A capacitor with air between its plates is charged to 70 V and then disconnected from the battery. What is the dielectric constant of this glass
assuming the end units will be Molarity as well. 13.1mL of AgNo3 solution are reacted with excess Na2CO3 solution to form AgCO3 precipitate. If 5.62mg of Ag2CO3 are formed, what was the original co