A student measures a mass of an 8cm3 block of brown sugar to be 19.9G. what is the density of the brown sugar?

Explanation:

The density of a substance can be found by using the formula

From the question we have

We have the final answer as

Hope this helps you

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 !

a corroding iron, if that's one of your choices