Answer : The correct answer is a) an exothermic reaction that releases energy.
Combustion reaction is generally referred as burning or when hydrocarbon reaction with oxygen to produce carbon dioxide and water . Combustion reaction releases energy. Example :
CH₄ + O₂ → CO₂ + H₂O + Energy or heat .
The reaction which releases energy or heat are known as Exothermic reactions .
Since it says hot dogs and hamburgers are cooked means they are undergoing combustion chemical reaction and so they are exothermic reactions. So option a) an exothermic reaction which releases energy is correct .
Answer:
lignands, the central atom/metal ion
Explanation:
<span>-Sodium atoms are oxidized. because it loses electron</span>
Butane: It is an organic compound belongs to class of alkane having molecular formula .
Butane consist of four carbon and ten hydrogen atoms attached by single covalent bond. Carbon and hydrogen atoms are attached in such a way that the valency of carbon that is four and valency of hydrogen that is one is completely satisfied and thus, results in the formation of stable compound.
The structure of butane with hydrogen atoms is shown in the image.
Answer:
74,67 gr/mol
Explanation:
At STP 1 mole of an ideal gas has volume of 22,4 L. Since we know the volume of the gas we can find the number of moles of the gas. (300 mL=0,3 L)
n=0,3L/22,4 L=0,01339 mol
Since we know weight of the gas as 1 g, we can find the molecular weight as;
MW=1 g/0,01339 mol =74,67 gr/mol