Answer:
The answer is
<h2>32 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume = 40 mL
density = 0.80 g/mL
The mass is
mass = 40 × 0.8
We have the final answer as
<h3>32 g</h3>
Hope this helps you
Answer:
pH = 11.37
Explanation:
To find the pH of a solution, we can use the formula:
pH = -log[H+]
Let's plug in what we know.
pH = -log(4.3 x 
)
Evaluate the log.
pH = 11.37
Hope this helps!
Answer:
<h2>0.58 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
From the question
volume = 15 mL
mass of object = 8.7 g
We have
We have the final answer as
<h3>0.58 g/mL</h3>
Hope this helps you
F₂ + 2 NaI → 2 NaF + I₂
<span>It is given that F₂ is light yellow / colorless in hydrocarbon solvent. The student combines Fluorine water with NaI in water. Then student adds pentane in the mixture of F₂ and NaI. After dissolution, solution was observed and a colorless pentane layer was seen. Alkanes are unreactive in nature. The C-H bond in alkane is difficult to break. whereas, F₂ is very reactive and reacts vigorously with alkanes in presence of light by free radical mechanism.It is given that the color of the solution is nearly colorless. F₂ when present in hydrocarbon solvent is light yellow/ colorless/ nearly colorless. Hence, F₂ is not reacting with hydrocarbon and there is no reaction taking place (No F</span>₂ is present<span>)</span>
It’s important because it provides so other scientists can repeat the experiment to prove if that theory is true or not.
