It is more correct to say an object gives off heat (warm) or absorbs heat (cool/cold)
Answer: A. 190 lbs.
Explanation: To find the mass in pounds we will use the following conversion factor: 1 lb = 0.45 kg
Solution:
87 kg x 1 lb / 0.45kg = 193 lbs.
Among the choices 190 lbs is the closest so it is the answer.
Answer:(a) hydrogen and oxygen
A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements. If only one atom of a specific type is present, no subscript is used. For atoms that have two or more of a specific type of atom present, a subscript is written after the symbol for that atom.