Answer:
<h2>
C)Four times</h2>
Explanation:
<h3>Because kinetic energy is proportional to the square of the velocity, when velocity is doubled, kinetic energy is quadrupled.</h3>
Magnet to remove the iron, filter paper (or some filter that could trap sand) to remove the sand, and heat up the salt and water, causing the water to evaporate to separate them.
Answer:
Potassium-40 (40K) is a radioactive isotope of potassium which has a long half-life of 1.251×109 years. It makes up 0.012% (120 ppm) of the total amount of potassium found in nature.
...
Potassium-40.
General
Natural abundance 0.0117(1)%
Half-life 1.251(3)×109 y
Parent isotopes Primordial
Decay products 40Ca (β−) 40Ar (EC, γ; β+)
A mixture means two or more substances forming into one new substance, look at your answers that you have. Does it show two or more different substances that chemically change into one new substance?
Answer:
Aluminum oxide has a chemical formula ai2o3, it is used in various chemicals.
Explanation: