Answer:
D. The coefficients give the ratio of mole reactant to moles product.
Explanation:
In stoichiometric calculations, the amount of product formed from reactants can be determined.
- Using this approach, the number of moles of reactants and products on both sides of the expression must be balanced.
- As a rule of thumb, the coefficients give the ratio of moles of reactants to moles of products.
- This is very useful in a number of calculations using the stoichiometric approach.
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:
Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O
The reactants are present in equimolar amounts, so there is no excess or limiting reactants.
(0.0500 L) x (0.600 mol/L HCl) x (2 mol H2O / 2 mol HCl) = 0.0300 mol H2O
(4.184 J/g·°C) x (50.0 g + 50.0 g) x (25.82 - 21.73)°C = 1711.256 J
(1711.256 J) / (0.0300 mol H2O) = 57042 J/mol = 57.0 kJ/mol H2O
Explanation:
Answer:
Radiation
Explanation:
<u>Radiation</u> travels in energy <u>waves</u>
An example of a general formula of an acid is
<span>HCl
This is called as hydrochloric acid or hydrogen chloride.
H represents for the atom of Hydrogen
and Cl represents for the atom of Chlorine
Since their charges are -1, and +1, it's ratio is 1:1</span>
