Answer:
4
Explanation:
Mass divided by Volume = Density
The objects mass is 200 grams and the volume of the water displaced is 50
So 200 divided by 50 equals 4
ΔG° = 14.1 kJ/mol
For the reaction A → B, <em>K</em> = [B]/[A].
If [A] = 240 and [B] = 1, then
<em>K</em> = 1/240 = 4.167 x 10^(-3)
The relationship between Δ<em>G</em>° and <em>K</em> is:
Δ<em>G</em>° = -<em>RT</em>ln<em>K</em>
where
<em>R</em> = the gas constant = 8.314 J·K^(-1)mol^(-1)
<em>T</em> = the Kelvin temperature
In this problem, <em>T</em> = (37 + 273.15) K = 310.15 K
∴ #Δ<em>G</em>° = -8.314 J·K^(-1)mol^(-1) × 310.15 K × ln(4.167× 10^(-3)
= -2579 × [-5.481 J·mol^(-1)] = 14 100 J·mol^(-1) = 14.1 kJ/mol
Note: We should expect Δ<em>G</em>° to be positive because <em>K</em> < 1.
Explanation:
Online access to standardized measurement sets, multi-source street view, or digital surface modeling is offered by World Elevation networks. The platforms include a specific example of elevation data and derivative items for mobile apps to use
Answer:
The percentage composition of the elements of the compound in the three samples is the same.
Explanation:
<em>The law of definite proportions states that all pure samples of a particular chemical compound contain the same elements in the same proportion by mass.</em>
Sample A:
Mass of A = 4.31 g; mass of Z = 7.70 g
Total mass of sample = 12.01
Percentage mass of A in the sample = (4.31 * 100)/12.01 = 35.9 %
Percentage mass of Z in the sample = (7.70 * 100)/12.01 = 64.1 %
Sample B:
Percentage mass of A in the sample = 35.9 %
Percentage mass of Z in the sample = 64.1 %
Sample C:
Mass of A = 0.718 g; Total mass of sample = 2.00 g
mass of Z = mass of sample - mass of A = 2.00 g - 0.718 g = 1.282 g
Percentage mass of A in the sample = (0.718 * 100)/2.00 = 35.9 %
Percentage mass of Z in the sample = (1.282 * 100)/2.00 = 64.1 %
From the calculations, it can be seen that the percentage composition of the elements in the compound is the same for the three samples.
The coefficient of Fe is 2, Cl is 2, and product would be 2 as well.
Answer is 2.
