The balanced chemical reaction would be written as follows:
2Mg + O2 = 2MgO
We are given the amount magnesium to be used in the reaction. This will be the starting point for the calculations. We do as follows:
15.0 g ( 1 mol / 24.31 g ) (2 mol MgO / 2 mol Mg ) (40.31 g / mol ) = 24.87 g MgO formed
Answer:
Personal Narrative Essay: The First Day In A New School
A first day at a new school can always be scary and nerve wrecking. Starting a new school can seem as if making new friends will be almost impossible. In the end a new school calls for new experiences and new friends.
It was the second semester of fourth grade year. My parents had recently bought a new house in a nice quite neighborhood. I was ecstatic I always wanted to move to a new house. I was tired of my old home since I had already explored every corner, nook, and cranny. The moment I realized I would have to leave my old friends behind was one of the most devastating moments of my life. I didn’t want to switch schools and make new friends. Yet at the same time was an interesting new experience.
It was finally the first day of school; I was excited yet nervous. I hoped I would be able to make new friends. The first time I saw the schools name I thought it was the strangest name I’ve ever heard or read, therefore I found it hard to pronounce it in the beginning. The schools’ floors had painted black paw prints, which stood out on the white tiled floor. Once you walk through the doors the office is to the right. The office seemed a bit cramped, since it had so many rooms in such a small area. In the office I meet with a really nice, sweet secretary who helped me register into the school, giving me a small tour of the school, also helping me find…show more content…
Bonnie the secretary introduced me to my new teacher. As Mrs. Bonnie was leaving the room, my new teacher Mrs. Evaheart introduced me to the class. As I stared at the class I couldn’t help but feel overwhelmed. I wanted to go back to my old school where I had friends, knew almost everyone, a place where I didn’t feel lonesome, a place anywhere but here. As I saw each and every one of my new classmates faces the utter dread that I felt slowly began to fade as I saw a familiar face. Seeing one of my former friends give me a renewed hope that maybe being in this school won’t be so bad after
Explanation:
I hope this helps!
The sentence that contains a present perfect verb is: She has assisted voters in District 2 for many years.
The present perfect tense is formed by combining the verb to have/has and the past participle of the main verb in the sentence.
In the third option given, the combination of "has" and "assisted" helps in forming the present perfect tense of the sentence. Thus, option C is correct.
Learn more about the present perfect tense here:
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