Answer: Species may become extinct because of changes in climate. competition with other species, a reduced food supply, or combinations of all of these. Most natural extinctions are isolated events that happen over a fairly long period of time
Explanation:
Answer:
the answers is 1.204×10/23
Explanation:
idek
The statement that correctly explains the polarity of the water molecule is B. Oxygen end has a partial negative charge and the hydrogen end has a partial positive charge.
The molar mass of the Carbon-12 from the periodic table is given to be 12.011 g. Multiply this mass with the number of moles given.
(0.25 moles) x (12.011 g / mole) = 3 g
Thus, the mass of 0.25 moles of carbon-12 is 3 g.
Answer:
Fahrenheit
Explanation:
The temperature of 42 degrees in Chicago, that has been recorded as a day's temperature record high for the month of August, is in Fahrenheit degrees. The reason why the assumption is that it is Fahrenheit degrees is the temperature scale that can be reached in the continental parts.
In most of the world (except for the United States, Jamaica, and a few other countries), the degree Celsius scale is used for most temperature measuring purposes. The entire scientific world (the U.S. included) measures temperature using the Celsius scale and thermodynamic temperature using the kelvin scale. Many engineering fields in the U.S., especially high-tech ones, also use the kelvin and degrees Celsius scales. However, the United States is the last major country in which the degree Fahrenheit temperature scale is used by most lay people, industry, popular meteorology, and government. Other engineering fields in the U.S. also rely upon the Rankine scale (a shifted Fahrenheit scale) when working in thermodynamic-related disciplines such as combustion.
The other two temperature scale is Celsius and Kelvin.
Converting Fahrenheit to Celsius is: C = (F - 32) * 5/9
Therefore, C = (42 - 32) * 5/9 = 10 * 5/9 = 50/9 = 5.5
Converting Fahrenheit to Kelvin is: K = C + 273
Therefore, K = 5.5 + 273 = 278.5