Answer:
4 moles of HCl are produced.
Explanation:
Given data:
Mass of hydrogen = 4 g
Number of moles of HCl = ?
Solution:
H₂ + Cl₂ → 2HCl
Number of moles of hydrogen:
Number of moles = mass/molar mass
Number of moles = 4 g/2 g/mol
Number of moles = 2 mol
now we will compare the moles of hydrogen and HCl.
H₂ : HCl
1 : 2
2 : 2/1×2 = 4 mol
Thus, 4 moles of HCl are produced.
Answer:
<em>Wave speed is the distance a wave travels in a given amount of time, such as the number of meters it travels per second. Wave speed is related to wavelength and wave frequency by the equation: Speed = Wavelength x Frequency. This equation can be used to calculate wave speed when wavelength and frequency are known</em>
Answer:
Li
Explanation:
According to periodic table, lithium will be the most reactive element because reactivity decreases down the group
Yes. In a homogeneous mixture the hydrogen and oxygen are not chemically combined; in water vapor, they are. You can separate a homogeneous mixture of hydrogen and oxygen by physical means, such as by cooling the mixture until the oxygen liquefies. If you cool water vapor you're just going to get liquid water and then ice - not two separate substances. That's because compounds can only be separated into their elements by chemical means.
Answer:
The wind energy and solar energy have their own benefits when producing electricity but one of their major drawbacks is that both these energy form depends on the environmental conditions and cannot be stored.
On the other hand, in hydroelectric pumped storage, water is stored in the form of gravitational potential energy. If not enough water is there to produce electricity, then this stored water can be run over turbines to produce electricity. Hence, this is one benefit of hydroelectric pumped storage over wind and solar energy.
