Prelim Chem Moles Question (1 Viewer)

[phoenix159]

Find the mass of copper (I) oxide formed when 10 g of copper (I) is burned [in the presence of oxygen]

 

[HeroicPandas]

Notice its copper (I) NOT copper (II)

Write the equation of: metal oxide + oxygen --> metal oxide



You are provided with the mass of copper (I), the rest is very easy, if not look below (in white):

Step 1: Find the moles of copper (I)
Step 2: Identify the molar ratio of copper solid and copper oxide
Step 3: Convert moles
Step 4: Find mass of copper oxide


Note: U must recall a formula that relates MOLES, MASS and MOLECULAR MASS

(dont worry about limiting reagants and excess)

 

[lightingbolt]

Notice its copper (I) NOT copper (II)

Write the equation of: metal oxide + oxygen --> metal oxide



You are provided with the mass of copper (I), the rest is very easy, if not look below (in white):

Step 1: Find the moles of copper (I)
Step 2: Identify the molar ratio of copper solid and copper oxide
Step 3: Convert moles
Step 4: Find mass of copper oxide


Note: U must recall a formula that relates MOLES, MASS and MOLECULAR MASS

this is the formula man,

n=m/Mm