Answer: I'm not sure about this one, but you can go to this link to understand it better https://youtu.be/wEQxtUwiV1E.Its a Khan Academy Video Hope This Helps
Explanation:
Answer:
cosine is adjacent over hypotenuse
Explanation:
How I know? It's just a basic formula for triangles, and my teacher taught me this. Sorry if this didn't help.
Answer:
The answer to your question is given below
Explanation:
The procedure to prepare a 1.0-liter solution of a specific molarity is as follow:
Step 1:
Determine mass of the solute needed. In this case it is 30g as given from the question.
Step 2:
Weigh the 30g from the sample of the solute using a weighing balance.
Step 3:
Put the 30g of the solute in a 500mL beaker, add adequate water and stir until it dissolves completely.
Step 4:
Transfer this solution from the 500mL to a 1L volumetric flask and make it up to the mark.
I say 1 it seems the most accurate