Water freezes at 0 degrees Celsius. A student discovered that adding half a cup of salt to a gallon of water lowers its freezing temperature by 7 degrees Celsius. What is the freezing temperature of the gallon of salt water?

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Question:

Water freezes at 0 degrees Celsius. A student discovered that adding half a cup of salt to a gallon of water lowers its freezing temperature by 7 degrees Celsius. What is the freezing temperature of the gallon of salt water?

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Answer:-7°CStep-by-step explanation:Freezing point of water = 0°CBy adding salt, freezing point lowers by 7°C ;The freezing point of salt water can be expressed as ;Since temperature lowers :Freezing point of salt water :Freezing point of water - 7°C0°C - 7°C= - 7°C

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