Answer:
K= 25.16%
Mn= 34.59%
O= 40.25%
Explanation:
Find the total mass of the compound. You can do this by multiplying by the molar mass.
add them:
40+55+64=159g
Now convert each element individually to grams using molar mass
Divide by the mass of the compound and multiply by 100
Answer:
Orbital motion occurs whenever an object is moving forward and at the same time is pulled by gravity toward another object. ... The result is a circular or oval path called an orbit, in which one object keeps moving around the other. Because of the relatively great gravity of the sun, Earth orbits the sun
Air is a homogeneous mixture, consisting of <span>nitrogen, oxygen, carbon dioxide and other gases present in air.</span>
We need to multiply the 2nd equation by two and reverse it.
Option D
<h3><u>Explanation:</u></h3>
In the 2nd reaction, it says H₂ +F₂ =2HF.
So, multiplying it by 2 gives 2H₂ + 2F₂ = 4HF.
Reversing it gives 4HF = 2H₂ +2F₂.
Now the 1st equation says 2H₂ +O2 =2H₂O.
Adding them gives
2H₂ +O₂ +4HF = 2H₂ +2F₂ +2H₂O.
Or, O₂ +4HF = 2H₂O + 2F₂.
this is the balanced reaction.
