Question

How much energy would it take to heat 10 g of water from 10 to 15 C?

Answer 1

It would take `"200 J"` of energy.

Explanation:

Use the following equation:

`Q=mcDeltaT`,

where `Q` is energy gained or lost in Joules (J), `m` is mass, `c` is the specific heat capacity of the substance undergoing a temperature change, and `DeltaT` is change is temperature, which is `(T_"final"-T_"initial")`.

`color(blue)("Organize your data"`.

Given/Known
`m="10 g"`
`c_"water"=(4.184 "J")/("g"*""^@"C")`
`DeltaT=(15^@"C"-10^@"C")=5^@"C"`

Unknown: Q

`color(blue)("Solution"`
Insert your data into the equation and solve for `Q`.

`Q=10"g"xx(4.184"J")/("g"*""^@"C")xx5^@"C"="200 J"` rounded to one significant figure