Magnesium oxide decomposes into magnesium and oxygen. if 12.09 g of magnesium oxide decomposes to form 7.29 g of magnesium, what mass of oxygen gas is also released in the reaction?

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An electrically neutral atom of manganese has an atomic number of 25. how many electrons does this atom have?

The particles that make up a liquid move a. more quickly b. more slowly than a gas.

Which statement about AHf is true? O It is zero for any compound in its standard state. It is positive when the bonds of the product store more energy than those of the reactants.

how many liters of oxygen will be produced at STP if 1.25 kg potassium chlorate decomposes completely?

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.