Answer:
I believe the answer is a
Explanation:
Painting does not save the chemical structure for preserving metals.
If this helped can i please have brainliest?
Answer:
<h2>1.2 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula

From the question
mass = 30 g
volume= 25 mL
We have

We have the final answer as
<h3>1.2 g/mL</h3>
Hope this helps you
Answer:
Alkaline
Explanation:
When the pH is greater than 7, it means that there are more hydroxyl ions than hydrogen ions, hence the solution is alkaline.
Answer:
25.6mL NaOH
Explanation:
We are given the Molarity of the solution (
) and the volume of the solution (.02L).
By multiplying the two together, we can find the moles of solution that are reacted with HCl.

This gives us .0082 moles of HCl.
We then find the moles of NaOH that are needed to react with the HCl using the equation.

As HCl and NaCl have a 1:1 ratio, we need .0082 mol of NaOH.
Dividing this value by the Molarity of the solution

Gives us the answer, in Liters (.0256), which we can then divide by 100 convert to mL.