Answer:
Krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.
Explanation:
Krypton (₃₆Kr), an element with atomic number 36, belongs to group 18 on the periodic table of elements. This group is a specific one - it's made up of elements known as noble gases. Besides krypton, these elements are: helium, neon, argon, xenon, and radon. All noble gases were characterized relatively late compared to other elements. They all conduct electricity, fluoresce, and are odorless and colorless. Besides that, they have very low chemical reactivity. Because of their stability, they are often used to maintain a safe, constant environment. As krypton shares all of these characteristics, it was difficult for chemists to find it. That's why it was most likely given that name.
The correct answer is 13 hours
Divide 143 by 11 and you’ll get 13.
The Bureau of the Refugees, Freedmen, and Abandoned of the Lands (Record Group 105), also known as the Freedmen's Bureau, was established in War Department by an act of the Congress on March 3, 1865
The Freedmen's Bureau was the agency of the United States that is War Department created in 1865. It's role was to assist and freed slaves by to providing them with food, good education, any jobs, land, and the protection
The Freedmen's Bureau was established in year March of 1865 to help freed people achieve the economic stability and to secure the political freedoms. Many of white Southerners, as well as the President Andrew Johnson, and challenged the Bureau's legitimacy and sparking the racial violence in the South and in the ultimate failure of the Bureau.
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Based on the information given, it should be noted that the slope cannot be interpreted as the equation makes no sense for the model.
<h3>
Interpretation of the slope.</h3>
From the information given, the explanatory variable x was the year that the observations were taken.
In this case, the values are the integer number between 1975 and 1986. The y-intercept of the equation makes no sense for the prediction as it's not in the range of the explanatory data.
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