Density decreases that's why ice floats on water because it's less dense than water.
Answer: Diameter = 7 inches
Area of circle is 38.46 inches²
Explanation: The diameter is the radius x 2 3.5 x 2 = 7 inches
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Answer and Explanation:
To calculate this, simply use an equality of proportions:
50 particles : 1 billion particles = <em>x</em> tons : 1.49 million tons
The value of <em>x</em> can be solved for by multiplying the ratio on the left by the value 1.49 million / 1 billion:
So, <em>x</em> = (50)(0.00149) tons = 0.0745 tons
Then, do the same thing for the larger concentration:
<em>x</em> = (200)(0.00149) tons = 0.298 tons
Answers and Explanations:
Physical properties are characteristics of substances that can be seen without a change in its chemical composition.
Here, physical properties are:
- density
- color
- luster
- taste
- abundance
- source
I'm not completely sure what you mean by "source", but I'm going to assume you mean the substance's origin found in nature.
H2O is the correct answer :)
