How much heat is required to raise the temperature of a sample of copper from 0.0°C to 55.0°C, if its specific heat is 0.384 J/g°C and its mass is 10.00 g? Group of answer choices 351.4 2110 211.2 3.54

211.2 J

Explanation:

Applying

Q = cm(t₁-t₂) Equation 1

Where Q = Amount of heat, c = specific heat capacity of copper, m = mass of copper, t₁ = initial temperature, t₂ = final temperature.

From the question,

Given: c = 0.384 J/g°C, m = 10 g, t₁ = 0°C, t₂ = 55°C

Substitute these value into equation 1

Q = 0.384×10×(55-0)

Q = 0.384×10×55

Q = 211.2 J

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !