Which of the following is a chemical change?

B:melting of a cube of ice

Explanation:

because it comes out as ice then it melts into liquids

the answer is D , because the circumference equals the mass of e=mc squared and if u divide that by itself you'll get a negative answer so u flip the reciprocal and then subtract oxygen and then u get splitting water into hydrogen and oxygen

would be false hope this out

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.