balancing chemical equations

Enter coefficients as: # # # (don't forget to space; or you can use a comma too)

_ Al₂O₃ → _ Al + _ O₂

Tags

NGSS.HS-PS1-7

Enter the coefficients as: # # (don't forget to space; or you can use a comma too)

_ P + _ O₂ → P₄O₁₀

Tags

NGSS.HS-PS1-7

Enter the coefficients as: # # (don't forget to space; or you can use a comma too)

_ AgF + CaCl₂ → _ AgCl + CaF₂

Tags

NGSS.HS-PS1-7

_AlBr₃ + _K₂SO₄ → _KBr + _Al₂(SO₄)₃

• 6 AlBr₃ + 1 K₂SO₄ → 6 KBr + 1 Al₂(SO₄)₃
• 2 AlBr₃ + 3 K₂SO₄ → 6 KBr + 1 Al₂(SO₄)₃
• 1 AlBr₃ + 1 K₂SO₄ → 2 KBr + 3 Al₂(SO₄)₃
• 2 AlBr₃ + 3 K₂SO₄ → 1 KBr + 2 Al₂(SO₄)₃

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2
• 6
• 1
• 4

Tags

NGSS.HS-PS1-7

How many atoms are represented in the reactants of this equation?

• 6
• 12
• 24
• 36

Tags

NGSS.HS-PS1-7

_AgNO₃ + _Cu →_Cu(NO₃)₂ + _Ag

• 2 AgNO₃ + 2 Cu → 3 Cu(NO₃)₂ + 1 Ag
• 2 AgNO₃ + 1 Cu → 1 Cu(NO₃)₂ + 2 Ag
• 1 AgNO₃ + 2 Cu → 2 Cu(NO₃)₂ + 1 Ag
• 3 AgNO₃ + 2 Cu → 3 Cu(NO₃)₂ + 2 Ag

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Balance this equation:

H₂ + Cl₂ ---> HCl

• It is balanced.

• H₂ + Cl₂ ---> 2HCl

• 3H₂ + Cl₂ ---> 6HCl

• H₂ + 3Cl₂ ---> 6HCl

Tags

NGSS.HS-PS1-7

How many oxygen atoms are produced?

• 2
• 4
• 8
• 1

Tags

NGSS.HS-PS1-7

*

• 12CO2 + H20 --light--> C6H12O6 + O2
• CO2 + 9H20 --light--> C6H12O6 + O2
• CO2 + H20 --light--> 3C6H12O6 + O2
• 6CO2 + 6H20 --light--> C6H12O6 + 6O2

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5