How to Balance CuO + H2S = CuS + H2O | and Is it Redox? @wbreslyn

Uploaded September 2024 | Updated September 2026, 2 weeks ago

Struggling to balance CuO + H₂S → CuS + H₂O? In this video, we’ll show you the quickest method to get the right coefficients and avoid common mistakes.

To balance CuO + H2S = CuS + H2O you'll need to be sure to count all of atoms on each side of the chemical equation.

Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Copper (II) oxide + Hydrogen sulfide.

Important tips for balancing chemical equations:

Only change the numbers in front of compounds (the coefficients).
Never change the numbers after atoms (the subscripts).
The number of each atom on both sides of the equation must be the same for the equation to be balanced.
For a complete tutorial on balancing all types of chemical equations, watch my video:

• Balancing Equations in 5 Easy Steps: youtu.be/zmdxMlb88Fs
• More Practice Balancing: youtu.be/Qci7hiBy7EQ

For help with moles to grams conversions and more:

• More Moles to Grams Practice: youtu.be/aIv5nr8ZNyw
• Molar Mass in Three Easy Steps: youtu.be/o3MMBO8WxjY
• Understanding the Mole: youtu.be/DyLktMPTuHY
• Moles - Gram Conversions: youtu.be/aIv5nr8ZNyw
• How to Balance Chemical Equations: youtu.be/zmdxMlb88Fs
• Mole Ratio: youtu.be/i71BMVlrMiw
• Reaction Stoichiometry: youtu.be/rrTqOsZPpaU

How to Balance CuO + H2S = CuS + H2O | and Is it Redox?

$Convert 3.5 L to mL (3.5 Liters to Milliliters) uantity you want to convert (3.5 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the conversion factor: Conversion factor: 1000 mL / 1 L Write the quantity you want to convert (3.5 L) as a fraction over 1: 3.5 L / 1 Multiply this fraction by the conversion factor: (3.5 L / 1) * (1000 mL / 1 L) Notice that the units of liters (L) in the numerator and denominator cancel out, leaving only the units of milliliters (mL): (3.5 * 1000) / (1 * 1) mL = 3500 / 1 mL = 3500 mL So, 3.5 L is equivalent to 3500 milliliters. The units of liters cancel out during the conversion process, leaving only milliliters as the final unit.$

Practice: Converting between Moles and Grams

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$Convert 6.5 L to mL (6.5 Liters to Milliliters) To convert 6.5 liters (L) to milliliters (mL), you can use the following steps. Note that the L will cancel out as you perform the conversion, leaving only mL: Conversion Factor: 1 liter (L) = 1000 milliliters (mL) Start with the quantity you want to convert (6.5 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the conversion factor: Conversion factor: 1000 mL / 1 L Write the quantity you want to convert (6.5 L) as a fraction over 1: 6.5 L / 1 Multiply this fraction by the conversion factor: (6.5 L / 1) * (1000 mL / 1 L) Notice that the units of liters (L) in the numerator and denominator cancel out, leaving only the units of milliliters (mL): (6.5 * 1000) / (1 * 1) mL = 6500 / 1 mL = 6500 mL So, 6.5 L is equivalent to 6500 milliliters. The units of liters cancel out during the conversion process, leaving only milliliters as the final unit.$

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$Convert 4.0 L to mL (4 Liters to Milliliters) To convert 4 liters (L) to milliliters (mL), you can use the following steps. Note that the L will cancel out as you perform the conversion, leaving only mL: Conversion Factor: 1 liter (L) = 1000 milliliters (mL) Start with the quantity you want to convert (4 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the conversion factor: Conversion factor: 1000 mL / 1 L Write the quantity you want to convert (4 L) as a fraction over 1: 4 L / 1 Multiply this fraction by the conversion factor: (4 L / 1) * (1000 mL / 1 L) Notice that the units of liters (L) in the numerator and denominator cancel out, leaving only the units of milliliters (mL): (4 * 1000) / (1 * 1) mL = 4000 / 1 mL = 4000 mL So, 4 L is equivalent to 4000 milliliters. The units of liters cancel out during the conversion process, leaving only milliliters as the final unit.$

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