The chemical formula for an antacid is CaC0_3.

_{How many elements are in the formula for antacids?}

Identify the reactants & products in this equation

CH₄ + 2O₂ $$\rightarrow$$ CO₂ + 2H₂O

How many elements are in 2 C₆H₁₂O₇? (a)  

How many atoms of C: ​ (b)  

How many atoms of H: ​ (c)  

How many atoms of O: ​ (d)  

How many TOTAL atoms: ​ (e)  

How many molecules of product are in this equation?

2SO₂ + O₂ + 2H₂O $$\rightarrow$$ 2H₂SO₄

How many atoms of oxygen are in this compound?

Cu(ClO₄)₂

The law of conservation of mass says the bonds between atoms are​ (a)   to form new substances with new properties.

According to the Law of Conservation of Mass (Matter), Matter cannot be ​ (a)   or ​ (b)   , it can only be ​ (c)   . This means however many atoms of an element we have before a reaction must be ​ (d)   to the number after a reaction.

New substances are formed when the ​ (a)   of substances are rearranged during a​ (b)   reaction. The law of ​ (c)   of mass states that the total number of atoms of each ​ (d)   is not created or ​destroyed during a chemical reaction. Instead, the atoms are ​ (e)   to form new substances.

How many atoms are in the following compound?

Al(NO₃)₃

CH₄ + 2O₂ $$\rightarrow$$ CO₂ + H₂O

If 5 grams of CH₄ react with 2 grams of O₂, how many total grams of CO₂ & H₂O will need to be produced for this reaction to follow the law of conservation of mass?

The ​ (a)   states that the same amount of ​ (b)   in the ​ (c)   must be present after a reaction in the ​ (d)   . So if 2g oxygen react with 3g hydrogen, the water they form will have a mass of ​ (e)   .