Answer: 0.118M
Explanation:
The formula for molarity is: ![M=\frac{mol solute}{L solution}](https://tex.z-dn.net/?f=M%3D%5Cfrac%7Bmol%20solute%7D%7BL%20solution%7D)
First, we need to find the number of moles of NaCl.
![2.70gNaCl*\frac{1molNaCl}{58.44gNaCl} =0.05molNaCl](https://tex.z-dn.net/?f=2.70gNaCl%2A%5Cfrac%7B1molNaCl%7D%7B58.44gNaCl%7D%20%3D0.05molNaCl)
Next, we must convert millimeters to liters. We can do that by dividing the number of mL by 1000.
![\frac{425mL}{1000} =0.425L](https://tex.z-dn.net/?f=%5Cfrac%7B425mL%7D%7B1000%7D%20%3D0.425L)
Now we have our needed data! All we need to do now is plug in our data to the molarity formula.
![M=\frac{0.05mol}{0.425L} =0.118M](https://tex.z-dn.net/?f=M%3D%5Cfrac%7B0.05mol%7D%7B0.425L%7D%20%3D0.118M)
I hope this helps! Pls mark brainliest!! :)
Answer: The best reason the scientific community will accept a theory is if it is proven.
The oxidizing agent is the one that is reduced in the reaction. In this reaction, the charge of Cu falls from +2 to zero charge (neutral atom in the right side). Hence, CuO is the oxidizing agent. The reducing agent, the one being oxidized is carbon from zero charge to +4. The answer is CuO.
Answer: Most of the stars in the universe are main sequence stars — those converting hydrogen into helium via nuclear fusion. A main sequence star may have a mass between a third to eight times that of the sun and eventually burn through the hydrogen in its core. Over its life, the outward pressure of fusion has balanced against the inward pressure of gravity. Once the fusion stops, gravity takes the lead and compresses the star smaller and tighter.
Temperatures increase with the contraction, eventually reaching levels where helium is able to fuse into carbon. Depending on the mass of the star, the helium burning might be gradual or might begin with an explosive flash.