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Irina18 [472]
3 years ago
9

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?
Mathematics
1 answer:
Artemon [7]3 years ago
4 0

Answer:

-7°C

Step-by-step explanation:

Freezing point of water = 0°C

By 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°C

0°C - 7°C

= - 7°C

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