Which of the following correctly provides evidence for the unit formula of magnesium oxide? A)
The decomposition of magnesium oxide produces 2.4 g of magnesium metal and 3.2 g of oxygen gas.

B)
The decomposition of magnesium oxide produces 2.0 g of magnesium metal and 2.0 g of oxygen gas.

C)
The decomposition of magnesium oxide produces 1.2 g of magnesium metal and 1.6 g of oxygen gas.

D)
The decomposition of magnesium oxide produces 2.4 g of magnesium metal and 1.6 g of oxygen gas.

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box

The movement of tectonic plates and in two locations is described below: location a: tectonic played push together location b: tectonic plates push apart