Explanation:
Bromothymol blue changes colour from blue to yellow due to the high carbon dioxide content being exhaled and dissolved in the solution.
Answer:
When the volume of product increases.
When the weight of the product decreases.
Option (a) and (d) are correct.
Explanation:
The overall density of the product can be decreased:
a. Increase the volume of the product (and keep the material same)
d. Decrease the weight of the product ( and keep the same material ).
Density is calculated as the ratio of mass to the volume.
Density is inversely related to volume and directly related to mass.
So, when the mass of the product is increased then the density will increase keeping the material same. Density will also increase when the volume of the product decreased.
The answer to your question would be:: the wind because it carries the sand until it runs into an obstacle
An enzyme can affect a chemical reaction by bringing the reactant closer together - chemical bonds may be weakened, and reactions will happen faster than without a catalyst. The energy can also be lowered, which means reactions will proceed at a lower temperature, light presence, etc.
Here, Equation: 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O
We know, Concentration (c) = Number of moles(n) / Volume (v)
Substitute the given values,
0.02 = n / 0.3 [ 300 mL = 0.3 L ]
n = 0.3 * 0.02
n = 0.006
Now, According to stoichiometry, There is 1 Molecule of Sodium sulfate produces for every 2 molecules of NaOH.
So, Number of Moles of Na₂SO₄ = 0.006/2 = 0.003
Given mass = Molar mass * Number of moles
M = 142.04 * 0.003
M = 0.426 g
In short, Your Answer would be: 0.426 g
Hope this helps!