Answer:
false, true.
Explanation:
"That's because enzymes don't affect the free energy of the reactants or products" good luck!
<u>Answer:</u> The standard Gibbs free energy of the reaction is -15.8 kJ/mol
<u>Explanation:</u>
Relation between standard Gibbs free energy and equilibrium constant follows:
where,
= Standard Gibbs free energy = ?
R = Gas constant =
T = temperature = 298 K
= equilibrium constant = 581
Putting values in above equation, we get:
Conversion factor used: 1 kJ = 1000 J
Hence, the standard Gibbs free energy of the reaction is -15.8 kJ/mol
The only option that fits is the last one — improper and biased measurements.
A scientist should be able to estimate a measurement to a tenth of the smallest scale division. The millimetre ruler would give an uncertainty of ±0.1 mm. The inch ruler would give an uncertainty of ±0.1 in. Since 1 in = 25.4 mm, 0.1 in = 2.54 mm. Thus, the <em>millimetre ruler is more precise</em> than the inch ruler.
Converting units <em>does not</em> change the degree of precision of a measurement.
The first scientist <em>did not</em> convert the units (the second scientist did!).
BUT, having different team members make the observations could introduce uncertainties caused by improper or biased readings of the equipment.
Answer: Chemical precipitation is the formation of a<em><u> </u></em><em><u>solid</u></em> from a solution. In a precipitation reaction, the precipitate <em><u>separates</u></em> from the solution.
Explanation:
Some reactions that happen in aqueous solutions produce precipitate. The precipitate is a solid compound formed by the chemical combination of ions, which is not soluble. In brief, a solid produced during a chemical reaction is a precipitate.
An example of a precipitation reaction is the double replacement reaction between sodium hydroxide and copper(II) chloride, which is represented by this equation:
2NaOH (aq) + CuCl₂ (aq) → 2NaCl (aq) + Cu(OH)₂ (s).
↑
precipitate
The reactants, NaOH and CuCl₂ (aq) are in aqueous solutions, which is indicated adding (aq) to the right of the chemical formula, the product NaCl, being a soluble salt, remain in solution, which is also indicated by the use of (aq), but the product Cu(OH)₂ is insoluble, and forms the precipitate, which is showm by the use of (s).