The properties of compounds are different, and in some cases very different, from those of the elements that compose them. This is because elements combine in compounds to become completely different substances with unique properties.
Compounds contain atoms of different elements chemically bonded in fixed ratios. An element is a pure chemical substance made up of atoms of the same kind. Compounds contain different elements in fixed ratios, arranged in a defined way by chemical bonds.
This is caused by different base properties where each element has a different number. Due to the number of electrons and differences in shell and valence electrons, different elements bond differently to certain other elements.
Compounds:
is composed of atoms of two or more different elements bonded together, and
can be broken down into simpler types of matter (elements) by chemical (rather than physical) means. from its components, and.
always contains the same proportions of atomic components.
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Answer:
D
Explanation:
P4 is polyatomic molecule
Explanation:
It is given that molarity of acetic acid = 0.0100 M
Therefore, moles of acetic acid = molarity of acetic acid × volume of buffer
Moles of acetic acid = 0.0100 M × 1.00 L
= 0.0100 mol
Similarly, moles of acetate = molarity of sodium acetat × volume of buffer
= 0.100 mol
When 
is added, it will convert acetate to acetic acid.
Hence, new moles acetic acid = (initial moles acetic acid) + (moles )
= 0.0100 mol + x
New moles of sodium acetate = (initial moles acetate) - (moles )
= 0.100 mol - x
According to Henderson - Hasselbalch equation,
pH = ![pK_{a} + log\frac{[conjugate base]}{[weak acid]}](https://tex.z-dn.net/?f=pK_%7Ba%7D%20%2B%20log%5Cfrac%7B%5Bconjugate%20base%5D%7D%7B%5Bweak%20acid%5D%7D)
pH = 
4.95 = 4.75 + 
= 4.95 - 4.75
= 0.20
= antilog (0.20)
= 1.6
Hence, x = 0.032555 mol
Therefore, moles of = 0.032555 mol
volume of = 
= 
= 0.0032555 L
or, = 3.25 (as 1 L = 1000 mL)
Thus, we can conclude that volume of added is 3.26 mL.
CH2O2 formic acid I believe so
Answer: reaction type is combustion
Explanation:
C6H14 + 19/2O2 ==> 6CO2 + 7H2O
