(a) increase (b) remain the same (c) decrease

(a) increase (b) remain the same (c) decrease

its hard i need help

For the reaction 4Fe+3O2==>2FeO3 (change in enthalpy=-1652) A. How much heat is released when 4.00 mol iron is reacted with excess O2? B. How much heat is released...

If copper has a density of 8.96 g/cm3, what is the volume of 6,000 g of copper?

So I have a table, with the range being time at ten second intervals, and a bunch of positions as my domains.

parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)

coefficient of static friction between the floor and the refrigerator is 0.40. What is the least force you could exert on the refrigerator to move it?

For the the reaction: 4Fe+3O2==>2Fe2O3 delta H = -1652kJ A. How much heat is released whem 4.00mol iron is reacted with excess O2? B. How much heat is released...

What would be the length of one side of the box, in meters?

What is the volume of a rock with a density of 3.68 g/cm3 and a mass of 430 g?

What volume of copper (density 8.96 g/cm3) would be needed to balance a 2.52 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance?

What volume of iron (density 7.87 g/cm3) would be required to balance a 1.00 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance?

A balloon filled with 39.9 mol of helium was a volums of 876 L at 0.0°C and 1 atm. The temperature of the balloon increased from 38.0°C as it expands to a volume of 998L, the pressure remaining constant...

Two blocks, A and B (with mass 45 kg and 125 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic...

If the internal energy of a thermodynamic system is increased by 300J while 75J of expansion work is done, how much heat was transferred and in which direction, to or from the system?

spring on the right is stretched 12.5 cm. Each spring has a force constant of 1.23 103 N/m

moving at constant velocity if the magnitude of the force P is reduced to 1.5 N. Find the coefficients of static and kinetic friction between the book and the table.

A sample of an ideal gas at 15.0 atm and 10.0L is allowed to expand against a constant external pressure of 2.00atm at a constant temperature. Calculate the work in units of kJ for the gas expans...

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40 cm^3. If the combustion of this mixuture released 950 J of energy, to what volume will the gases...

As a system increases in volume, it absorbs 52.5J of energy in the form of heat from its surroundings. The piston is working against a pressure of 0.500 atm. The final volume of the system is 58.0...