D=m/V=0.72/0.1x0.08x0.02=4500(kg/m3)
Answer:
Let x equal the percentage abundance of one of the two isotopes. The other isotope must then have an abundance of 100 percent minus x percent, which you express in decimal form as (1 - x). For nitrogen, you can set x equal to the abundance of N14 and (1 - x) as the abundance of N15.
Explanation:
Your answer is d hope I helped
A student creates a “volcano” by mixing vinegar and baking soda is a Experiment in the following way.
Explanation:
- The baking soda and vinegar volcano is a fun chemistry project that a student can do to simulate a real volcanic eruption or as an example of an acid-base reaction.
- The chemical reaction between baking soda (sodium bicarbonate) and vinegar (acetic acid) produces carbon dioxide gas, which forms bubbles in dishwashing detergent. The chemicals are non-toxic (though not tasty), making this project a good choice for scientists of all ages.
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The cool red lava is the result of a chemical reaction between the baking soda and vinegar.
- In this reaction, carbon dioxide gas is produced, which is also present in real volcanoes.
- As the carbon dioxide gas is produced, pressure builds up inside the plastic bottle, until—thanks to the detergent—the gas bubbles out of the mouth of the volcano.
Answer:
a
Explanation:
A child shivering gives off energy to transfer that energy into heat