Answer:
divide 10.0g by each reactant's respective molar mass then divide that number by its coefficient in the balanced reaction. the smaller of the two numbers indicates the limiting reactant - it’s Al
Answer:- 
Solution:- Wavelength is given and we are asked to calculate the frequency. The equation that correlates frequency with wavelength is:
where, 
is the symbol for frequency, c is the symbol for speed of light and 
is the symbol for wavelength.
Speed of light is 
and the wavelength is given as 
.
Let's plug in the values in the equation and so the calculations to calculate the frequency:
(since, 
)
So, the frequency of the wave is .
The correct answer among the choices given above is the last option. When an acid reacts with an active metal, hydrogen gas is produced. The hydrogen in acid is displaced by the metal yielding hydrogen gas.
Mg + 2HCl = MgCl2 + H2
If you're asking about vapor its a solid
