Photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation.
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The question is incomplete, the complete question is; Describe the preparation of 2.00 L of 0.108 M BaCl2 from BaCl2.2H2O
Answer:
See explanation
Explanation:
First we must know the molar mass of the compound = 244.3 g/mol
Now we must calculate the number of moles of BaCl2.2H2O in the solution.
number of moles = concentration * volume = 0.108 M * 2.00 L = 0.216 moles
Now the mass of solid that we need to take can be obtained from;
number of moles = mass/molar mass
mass = number of moles * molar mass
mass = 0.216 moles * 244.3 g/mol
Mass = 52.8 g
Hence, we must weigh 52.8 g of BaCl2.2H2O accurately in a balance and dissolve it in 2 L of water to give 0.108 M solution of BaCl2.2H2O.
Answer:
MgO has a highest melting point
C5Br has lowesst
Explanation:
It takes a lot of energy to overcome the strong electrostatic forces of attraction between oppositely charged ions, so ionic compounds have high melting and boiling points. ... Magnesium oxide is made from ions with two charges (Mg 2+ and O 2-) and so has a much higher melting point of 2852°C.
<span>La Nina a cooling of water in the Pacific that happens at irregular intervals and is associated with widespread changes in weather patterns complementary to those of El Niño, the heating of water. It is at the least less extensive and damaging in their effects.</span>
Answer:
Other comparisons of the legislative process in both chambers shows that:
In both House and Senate: Committees review and mark up bills.
In the House of Representatives: Bills are introduced by the reading clerk.
In Senate: Bills can be filibustered.
In Senate: Only related amendments can be attached to bills.
In both House and Senate: Unrelated riders can be attached to bills.
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