Given that I no not see any explanation in the previos answer, I think you can benefit of this.
Exothermic refers only to the fact that the reaction releases energy in the form of heat when occurs. So, the enthalpy is higher at start and lower and the end.
Seen in this way, you can deduct that the change in enthalpy is negative, which is what the third option says.
4 7/15
You can only add fractions if they have the same denominator, which in this case is the 15 and the 5. So you can't add the 1/5 and the 4/15 together just yet because its not the same denominator. Multiply 3/3 to 1/5 to get the same denominator as 4/15, and it would become 3/15 because whatever you do to the top, you do to the top. Add them together and you get 7/15, and then add the whole 4 and you get 4 7/15
Answer:
The scale factor is x3 5 x 3 = 15 and if you multiply the rest by 3 it adds up
Step-by-step explanation:
the fraction would be 1/3 or 3/1 I really cannot remember
but I am pretty sure it is 3/1
so the scale factor is 3 and the fraction is 3/1
Answer:
6
Step-by-step explanation:
take one away
