1.00 degree increase<span> on the </span>Celsius scale<span> is </span>equivalent<span> to a </span>1.80 degree increase<span> on the</span>Fahrenheit scale<span>. If a </span>temperature increases<span> by </span>48.0°C<span>, </span>
<span><u><em>First, we should define what a mixture and a two-phase mixture mean.</em></u>
<u><em>A mixture</em></u> is a combination of two or more substances without any chemical reaction occurring between them. Components of a mixture can be separated using physical methods such as heating, filtering, evaporation, .... etc
<em><u>A two-phase mixture</u></em> is a type of mixture that contains two different phases of matter, for example solid and liquid phases in one mixture or liquid and gas phases in one mixture.
<u><em>Now, we can give examples of two-phase mixtures and mention how to separate them:</em></u>
<u><em>A mixture of sand and water</em></u> is considered a two-phase mixture (sand is sold and water is a liquid).
<u><em>The components can easily be separated</em></u> using filtration where the sand will remain on the filter paper and water will pass.
Another example is <u><em>a mixture of sugar and water</em></u> (sugar is a solid and water is a liquid).
<u><em>The components can be separated </em></u>by heating. We can eat the mixture until water evaporates and the sugar is precipitated. The evaporated water can then be condensed into a different container.
Hope this helps :)</span>
Answer:
10 million years
Explanation:
For a sample to decay to 25% of its original amount, 2 half lives must have passed. Since one half life is 5 million years, multiplying this by 2 gives us that 2 half lives is 10 million years.
Answer: A. 2
Explanation: The outermost energy level shell is 4s2.