What coefficients would balance the following equation?

__Al + __O2 → __Al2O3

A. 2Al + 3O2 → 1Al2O3

B. 2Al + 3O2 → 2Al2O3

C. 3Al + 3O2 → 2Al2O3

D. 4Al + 3O2 → 2Al2O3

Describe the properties of a wave. Include how longitudinal and transverse waves are alike and how they are different. Provide an example for each.

Which of the following is a vector quantity? a) 83 ounces of liquid b) 10 m/s down c) 15 seconds of travel d) 55 km/hr in a truck

State two factors that affect the turning effect of force

An electric motor moves a chain that pulls the roller coaster car 180 meters to the top of the first hill. The chain exerts a force of 2,524 newtons on the car.

What will happen to a waves frequency if it's speed increases and it's wavelength remains the same?

The chemical reaction that causes chromium to corrode in air is given by 4Cr+3O2→2Cr2O3 in which at 298 K ΔH∘rxn = - 2256 kJ ΔS∘rxn = - 549.

Witch of the statements about water is true?

In what direction does an applied force move an object? In the same direction as the force Independent of the force In the opposite direction of the force Perpendicular to the force

You (60 kg) and your friend (80 kg) are both floating on separate tubes next to each other on the San Marcos River. Now you push your friend with 10 Newton. Select all correct statements. A.

Six artificial satellites complete one circular orbit around a space station in the same amount of time. Each satellite has mass m and radius of orbit L.