sodium cloride is salt created from sodium Na and chlorine Ci
Na-sodium Ca- calcium
Ci-chlorine FL- flerovium
Ca- calcium Br-bromine
H- hydrogen He-helium
Answer:
Two half lives.
Explanation:
It is known that the decay of isotopes and radioactive material obeys first order kinetics.
Also, it is clear that in first order decay the half-life time is independent of the initial concentration.
That means for a sample 100% to decay to 50 % it will take one half-life, and to decay the remaining 50% to 25% it will take another half-life.
So, for a sample has 25% parent and 75% daughter it will have two half-lives.
Running water. Streams, lakes, rivers, ponds, oceans- all affect the Earth's landscape.
Answer:
The answer is
<h2>184.54 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
density of iron = 7.92 g/mL
volume = final volume of water - initial volume of water
volume = 49.10 - 25.80
Volume = 23.3 mL
It's mass is
mass = 7.92 × 23.3 = 184.536
We have the final answer as
<h3>184.54 g</h3>
Hope this helps you
The speed of all electromagnetic waves in empty space is 3.00 x 108 m/s. Calculate the wavelengths of electromagnetic waves emitted at the following frequencies: Radio waves at 88.0 MHz (3.41 m) Visible light at 6.0x108 MHz (5.0 x 10-7 m)
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