Which equations are balanced? Check all that apply.

Mg3N2 + H2O → 3MgO + 2NH3

C3H8 + 5O2 → 4H2O + 3CO2

Zn + 2HCl → ZnCl2 + H2

3Ca (OH) 2 + 2H3PO4 → Ca3 (PO4) 2 + 6H2O

3H2SO4 + 2Fe → Fe2 (SO4) 3 + H2

4Al + 3O2 → 2Al2O3

A moving object collides with an object at rest. The two objects do not interact with any other objects. Ignore any effects due to friction. Is it possible for both objects to be at rest after the collision?

What can cause a production possibilities curve to move to the right? A the population is growing increasingly old B an epidemic kills thousands of young men and women C thousands of people move out of the country D) anew invention lowers the cost

Do you think it is possible to lose weight and stay physically fit without receiving proper nutrition? Justify your response. << Read Less

An aluminum cylinder, of height h=2ocm and of radius r=1ocm, rests with its base on a horizontal table.

What is wavelength and how it is occur.

an object travels in circular motion with a speed of 11.40 m/s. What is the centripetal acceleration if the radius of the circle is 5.52 m?

A single force acts on an object. The components of this force act along the + x-axis and the - y-axis. The single force that will bring the object into equilibrium has components that act along the a. + x-axis and + y-axis. C. - x-axis and + y-axis.

List 5 events that could trigger a mass movement?

What are some stressors of aquatic organisms

Which law describes the magnetic field in a nonlinear wire?