MgBr2: It's formed of Magnesium Mg, and dibromide Br2. And since Magnesium is a metal and Dibromide a no-metal, it's more appropriate while naming the substance to remove the "di" from "dibromide". Following the rules for naming compounds, the prefixes "mono", "di", etc... should only be used between 2 nonmetals.
So, the name for MgBr2 is Magnesium Bromide.
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Answer:</h3>
23 grams Na
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Explanation:</h3>
- Molarity is the concentration of a solution in moles per liter.
- Therefore, a solution with a molarity of 3M contains 3 moles of solute in 1 liter of solution, while a solution with 2M contains 2 moles of solute in 1 liter of solution.
Thus, 3 M = 3 moles/liter
2 M = 2 moles /liter
The difference is 1 mole/Liter
But, 1 mole of sodium 23 g
Therefore;
Mass of sodium = moles × Atomic mass
= 1 mole × 23 g/mol
= 23 g
Therefore a 3 M solution contains 23 g of sodium more than a 2 M solution.
In the ocean, light is used by phytoplankton in order to produce sugar. 10% of the energy from the sun is available to the zooplankton that eat the phytoplankton, the rest of the energy is lost as heat or through powering body building/functions/reproduction. Whatever eats the zooplankton receives 10% of that energy in order to grow
Answer:
42996.19989
Explanation:
Molar mass of KCr(SO4)2 12h2o is 20474.3809 g/mol x 2.1 = 42996.19989
Answer: the molecular formula is C10H20O
Explanation:Please see attachment for explanation
