A15.6g sample of ethanol absorbs 868j as it is heat. what is the temperature change of the ethanol? assume that the most specific heat is 2.44 j/g c. is this endothermic or exothermic?

Change in temperature, ΔT = 22.8°C,

Reaction is endothermic.

Explanation:

The amount heat is given by the formula;

q = m×c×ΔT

Where, q is the amount of heat

m is the mass of a substance

c is the specific heat capacity

ΔT is the temperature change.

In this case, making ΔT the subject of the formula, we get;

ΔT = q/m×c

but; q = 868 Joules

m = 15.6 g

c = 2.44 J/g°C

Therefore;

ΔT = 868 J/(2.44 J/g°C × 15.6 g)

     = 22.8 °C

Therefore, the temperature change for ethanol is 22.8 °C

This means there is an increase in temperature and therefore the reaction is endothermic.

u i forgot the answer?

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i