Answer:
We need 5 tablets.
Explanation:
We need to prepare 250 mL of a 1 : 5 solution.
When we are talking about solutions , '' a : b '' is known as the solution ratio.
Where ''a'' and ''b'' are integer numbers.
In our exercise, we have a 1 : 5 solution ratio. This means that we will have 1 gram of solute for each 5 mL of solution.
To calculate the mass of solute we can write the following :

Notice that we equalize the solution ratio to the mass of solute ''
'' divided by the total volume of solution (250 mL).
Solving for
⇒
⇒ 
We found out that we need 50 g of solute.
Given that each tablet has 10 g of solute ⇒

We need five 10-gram tablets to prepare the solution.
Answer:
D. catabolic reactions
Explanation:
Metabolism employs catabolic reactions to break down large molecules (nutrients) carbohydrates, fats, proteins as food is ingested. Then they degrade the molecules , being smaller and releasing the energy we need in order to function. The metabolic processes ocurr in all cell of the body.
Catabolism and anabolic reactions are good companions as they occur together.
Answer:
If You Swallow the Semen of an HIV-Positive Person Can You Be Infected?
Explanation:
You can contract it if there are open wounds in your mouth