Answer:
The Answer is B. X: Opaque Objects
> > > Y: Transparent Objects
Explanation:
Answer:
8.45 M
Explanation:
To solve this problem we need to keep in mind the <em>definition of molarity</em>:
- Molarity = moles / volume
First we<u> calculate the moles of AlCl₃ </u>in 0.672 L of a 4.78 M solution:
- Moles = Molarity * volume
Then we <u>calculate the new molarity of the AlCl₃ solution</u> using that <em>number of moles, which remains the same throughout the evaporation process</em>:
- New Molarity = 3.212 moles / 0.380 L
Answer:
Explanation:
Weight of NaCl is equal to sum of weight of one mole of sodium and one mole of chloride.
Mathematically, it can be represented as -
1 mol (Na) 
1 mol (Cl) 
g/mol
In 
gram of NaCl, there is one mole of Na or 
ions
In one gram of NaCl, there will be
sodium ions
In 
grams of NaCl, the number of sodium ions will be -
We are given the number of moles of solid magnesium supplied for the reaction which is 0.02 moles while hydrochloric acid is supplied in excess thus we can say that the reaction proceeds to completion. Calculation is as follows:
0.020 mol Mg ( 1 mol H2 / 1 mol Mg ) = 0.020 mol H2 gas is produced
To convert the number of moles to volume, we use the conditions at STP of 1 mol of a substance is equal to 22.4 L. Thus,
0.020 mol H2 (22.4 L / 1 mol) (1000 mL / 1 L) = 448 mL
Decrease in predators because then the wild turkeys won't be killed.
