Answer:
The answer to your question is: HCl = 58.44 g
Explanation:
To solve this problem, we must remember the law of conservation of mass that says that, matter cannot be created or destroyed, only changes its form.
That means that, the mass of the reactants must be equal to the mass of the products.
Process
Sodium (Na) + Chlorine (Cl) ⇒ Sodium chloride (HCl)
22.99 g 35.45 g x
22.99 + 35.45 = HCl
HCl = 58.44 g
A dust particle with mass of 0.050 and a charge
Answer:
0.972mol
Explanation:
Given parameters:
Volume of Solution of KCl = 0.486L
Molarity = 2.0M
Unknown:
Number of moles of KCl in solution = ?
Solution:
To find the number of moles of KCl in this solution, use the expression below;
Number of moles = molarity x volume
Insert the parameters and solve;
Number of moles = 0.486 x 2 = 0.972mol
The number that represents a neutral pH is 7.
<span>They can be separated by physical processes.
This problem requires you to simply memorize the definition of a mixture. So let's take a look at the choices and see why one is correct while the other three are wrong.
1. They are chemically bonded together - The definition of a mixture is where "two or more pure substances are combined where each substance retains its individual chemical property." This option isn't correct.
2. They can be classified as pure substances - This option doesn't work either since a mixture has two or more pure substances.
3. They have fixed ratios between their components - Imagine a mixture of salt and flour. You can have a little salt in the mixture or a lot of salt in the mixture. There isn't a fixed ratio, so this is also a bad choice.
4. They can be separated by physical processes - Since the other three options are all obviously false, this is the only possible option. Mind, the separation may not be easy (take a look at the salt and flour mixture used as a demonstration above), but it should be possible.</span>