Answer:
Explanation:
The spectator ions are the ions that are on both sides of the equation.
They are present at the beginning and at the end of the reaction. They don't take part in the reaction. They are simply "spectators" watching the other ions "do their thing."
Answer:
The volume (in ml) of a 3.57 M solution of 
that contains 0.884 moles of is 247.61g mL
Explanation:
According to the definition of Molarity
which sates
"The amount of moles of a substance present in one litre of the solution is called as Molarity."
3.57M solution implies that 1000 mL of the solution conatins 3.57Moles of
Hence , 3.57 moles of is present in the 1000 ml of solution
Now,
In 1 mole of is present in the =
ml of solution
Similarily ,
In 0.884 moles of is present in the 
of solution= 247.61g mL
Elements named after celestial bodies are the following.
1.Element 34 (Selenium) is named after the moon. Selene is Greek for moon
2. Element 2 (Helium) is named after the sun. Helios is Greek for sun.
3. Element 52 (Tellurium) is named after the earth. Tellus is the Latin word for earth.
4. Element 80 (Mercury) is named after the planet Mercury. The name Mercury is also a name of a Roman god.
5. Element 92 (Uranium) is named after the planet Uranus.
6. Element 93 (Neptunium) is named after the planet Neptune.
7. Element 94 (Plutonium) is named after the planet Pluto.
Answer:
five half lives
Explanation:
Half-life is the time required for a quantity to reduce to half of its initial value.
How many half lives it would take to reach 3.13% form 100% of it's initial concentration:
100% - 50% : First Half life
50% - 25%: Second Half life
25% - 12.5%: Third Half life
12.5% - 6.25%: Fourth Half life
6.25% - 3.125%: Fifth Half life
This means it would take five half lives to get to 3.125% (≈ 3.13%) of it's original concentration.
