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?

Why can't you add single atoms of what you need to either side of the arrow?

Which of them is the right symbol for the element? Al (2) OR 2Al

What is atome in science?

Janelle is observing a sample of matter. She notes that it is a shiny silver-colored solid, has a mass of around 20 grams, and conducts heat and electricity well.

Draw the major organic product formed when the compound shown below is heated with h2so4. interactive 3d display mode

Calculate the density of a rectangular solid that has a mass of 25.71 g, and its dimensions are 2.3 x 4.01 x 1.82 cm.

When the metal sample reacts with acid, the gas evolved will be collected over water; the gas is said to be "wet".

Solid iron (II) sulfide reacts with aqueous hydrochloric acid HCl to produce hydrogen sulfide gas H2S and aqueous iron (II) chloride.

How are mixtures compounds and elements alike?

The percentage of carbon dioxide in the atmosphere has increased in the last century and is a concern for the environment as it increases the greenhouse effect. Give one possible explanation for the increase of carbon dioxide in the atmosphere