Answer:
false
Explanation:
cuz carbon dioxide is greenhouse gasses
The mass is 5kg
I hope this helps
Answer:
When two substances having different temperatures are introduced or kept together, heat energy, Q, flows from a substance at higher temperature to a substance at lower temperature. Also, heat continues to be transferred until their temperatures are equalized, at which point the substances are in thermal equilibrium. In a closed system, the amount of energy lost is equal to but opposite the amount of energy gained.
Explanation:
Answer:
0.1256 - before dilution
0.0897 - after dilution
Check attachment for calculation
Explanation:
There are two type of reaction possible , i.e. , exothermic and endothermic reaction ,
Exothermic reaction -
The type of reaction in which energy in the form of heat or light is released , is known as exothermic reaction ,
The reaction mixture usually get heated after the reaction .( temperature increases ) .
The sign of ΔH of an exothermic reaction is negative .
Similarly ,
Endothermic reaction -
The type of reaction in which energy is absorbed in the form of heat is known as endothermic reaction .
The reaction mixture usually get cooled after the reaction .( temperature decreases ) .
The sign of ΔH of an Endothermic reaction is positive .
a. dry ice evaporating ,
<u>Endothermic reaction , ΔH = positive .</u>
b. a sparkler burning ,
<u>Exothermic reaction ΔH = negative . </u>
c. the reaction that occurs in a chemical cold pack often used to ice athletic injuries
<u>Endothermic reaction , ΔH = positive . </u>