Answer:
A.in Group 8A (far right-hand side)
Explanation:
The so-called noble gases are found in group VIIIA of the periodic table, on the right side. It corresponds to the gases: Neon, Argon, Xenon, Helium, Radon, Helium.
Answer: Wouldn't that just be 60 grams?
Explanation:
50+10=60
Answer:
Explanation:
Atoms are neutral; they contain the same number of protons as electrons. A neutral sodium atom, for example, contains 11 protons and 11 electrons. Atoms that gain extra electrons become negatively charged.
Answer:
Explanation:
From the question, we have been asked to find the molarity of FeCl2 having a volume of 450 mL,
We have been provided with 225 g which is proportional to 1.8 moles.
We know that molarity of any solution should be in mol/L.
1 mole contained in 1 L means it has a molarity of 1 mol/L
Let's convert 450 mL to Litres which is,
= 0.450 L
Thus,
1 mole is contained in 1L
x moles are contained in 0.450 L
Hence,
x mole/molarity = {1 mole x 1 L}/{0.450 L}
= 4 mol/L
Therefore 4 mol/L is the molar concentration.
It's a piece of glassware used for handling liquids, usually in a laboratory,
although I use one as a coffee cup.
They have markings on the side, like a kitchen measuring cup, so you can
measure different amounts of liquid, and they have a lip for pouring.
They're also usually made of a special type of glass (borosilicate) so that
they won't crack when very hot liquids are poured in.
Here's a picture of a beaker with 200 milliliters of some blue stuff in it.