Answer:
because the water vapor still has the same molecular structure as liquid water (H2O). If the bubbles were caused by the decomposition of a molecule into a gas (such as H2O →H2 and O2), then boiling would be a chemical change.
Explanation:
Boiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O). If the bubbles were caused by the decomposition of a molecule into a gas (such as H2O →H2 and O2), then boiling would be a chemical change.
Explanation:
False, they also provide oxygen
The volume of water needed to prepare the solution given the data is 2.16 L
<h3>What is molarity? </h3>
This is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:
Molarity = mole / Volume
<h3>How to determine the mole of CaCO₃</h3>
- Mass of CaCO₃ = 756 g
- Molar mass of CaCO₃ = 100.1 g/mol
- Mole of CaCO₃ =?
Mole = mass / molar mass
Mole of CaCO₃ = 756 / 100.1
Mole of CaCO₃ = 7.55 moles
<h3>How to determine the volume </h3>
- Mole of CaCO₃ = 7.55 moles
- Molarity = 3.5 M
- Volume = ?
Volume = mole / molarity
Volume = 7.55 / 3.5
Volume = 2.16 L
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