Answer : b. mixture
<h3>Further explanation</h3>
Element and compound are included in pure substance where the composition is the same in each part
Elements are made up of 1 type of atom, while the compounds of 2 or more types of atoms
, both can be represented in the form of chemical symbols
A mixture is a combination of substances. The properties of a substance in the mixture component are unchanged
The mixture can be a homogeneous mixture or a heterogeneous mixture
- the homogeneous mixture if each part has the same composition
- the heterogeneous mixture if each part has a different composition
Solution including into Homogeneous mixture, while suspension into a heterogeneous mixture
So a term that could refer to heterogeneous matter : b. mixture
Which unit is not a measurement of volume?
<u>cm
</u>
L
ml
cm³
Cm is a measurement for length
Blood circulation is what our body runs off. If we don’t have this nutrition is not delivered to certain parts of the human body this nutrients are used to keep the body moving and healthy!
The nucleus directs all cellular activities by controlling the synthesis of proteins. ... The nucleus contains encoded instructions for the synthesis of proteins in a helical molecule called deoxyribonucleic acid (DNA). The cell's DNA is packaged within the nucleus in a structural form called chromatin.
Explanation:
The reaction is as follows.
Standard values of bond energies are as follows.
C-C = 347 kJ/mol
C-H = 414 kJ/mol
C-O = 360 kJ/mol
O-H = 464 kJ/mol
O=O = 498 kJ/mol
C=O = 799 kJ/mol
Hence, calculate the change in enthalpy of the reaction as follows.
= [5(C-H) + 1(C-C) + 1(C-O) + 1(O-H) + 3(O=O)] - [4(C=O) + 6(O-H)]
= ![[5 \times 414 + 1 \times 347 + 1 \times 360 + 1 \times 464 + 3 \times 498] kJ - [4 \times 799 + 6 \times 464]kJ](https://tex.z-dn.net/?f=%5B5%20%5Ctimes%20414%20%2B%201%20%5Ctimes%20347%20%2B%201%20%5Ctimes%20360%20%2B%201%20%5Ctimes%20464%20%2B%203%20%5Ctimes%20498%5D%20kJ%20-%20%5B4%20%5Ctimes%20799%20%2B%206%20%5Ctimes%20464%5DkJ)
= (4735 - 5980) kJ
= -1245 kJ
Thus, we can conclude that the enthalpy of given reaction is -1245 kJ.
