A student observes a chemical reaction. Aluminum (Al) + Oxygen (O) yields Aluminum Oxide (Al2O3)

She writes an equation that correctly displays the law of conservation of mass.

Select the balanced equation below that she wrote about this chemical reaction.

Group of answer choices

4Al + 3O2 --> 2Al2O3

4Al + 2O2 --> 3Al2O3

2Al + 3O3 --> 2Al2O3

Al + O2 --> Al2O3

4Al + 2O2 --> 3Al2O3

Explanation:THIS IS YOUR ANSWER

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.