Complex compounds are broken down to simpler substances in catabolic reactions.
These kinds of reactions often occur in biological systems. In living organisms, complex compounds like lipids, proteins and complex sugar like cellulose are broken down into simpler forms. Products of these reactions are simple sugars, amino acids etc. but a certain amount of energy is also produced and stored in energy molecules for future use.
Answer:
Explanation:
This is an example of a limiting reactant question, and is very common as a general chemistry problem.
We first see the balanced equation, that is:
2CuCl2+4KI→2CuI+4KCl+I2
We first need to find the limiting reactant
We see that 0.56 g of copper(II) chloride (CuCl2) reacts with 0.64 g of potassium iodide (KI) . So, let's convert those amounts into moles.
Copper(II) chloride has a molar mass of
134.45 g/mol . So in 0.56 g of copper(II) chloride, then there exist
0.56g134.45g/mol≈4.17⋅10−3 mol
Potassium iodide has a molar mass of
166 g/mol . So, in 0.64 g of potassium iodide, there exist
if it wrong i am sorry
Answer:
B
Explanation:
First Law of thermodynamics says energy of the universe is constant and can only be changed in other forms of energy
Missing questions:
<span>a) How many milliliters of acid are in the resulting mixture?
b) What percentage of the resulting mixture is acid?
a) V</span>₁ = 35 ml.
ω₁ = 18% = 0,18.
V₂ = 90 ml.
ω₂ = 68% = 0,68.
V(acid) = V₁ · ω₁ + V₂ · ω₂.
V(acid) = 35 ml · 0,18 + 90 ml · 0,68 = 67,5ml.
b) ω(acid) = 67,5 ml ÷ (35 ml + 90 ml).
ω(acid) = 54%.
