Answer:
chemical
Explanation:
becuase the sugar disolves into the coffe.
sorry if its wrong :)
Answer:
Regularly test the water in residents' homes.
Explanation:
The only way to know if tap water contains lead is to do tests to determine the levels of that metal in the water. Therefore, the state is under an obligation to constantly conduct such tests in the resident´s homes and thus determine whether the water supplied is fit for human consumption.
The state after the tests must guarantee the population the treatment of the water to reduce the levels of lead. The main pipes that contain lead pipes must be changed, as well as those parts of the service connections made of lead.
Answer:is D.the wave theory of light
Explanation:
cuz i got it wrong :( but the answer is correct :3
Answer:
The concentration of NO₂ is 0,0230M
Explanation:
The equilibrium constant, kc, express the ratio in equilibrium between products and reactants. For the reaction:
N₂O₄(g) ⇄ 2NO₂ (g) <em>kc = 0.211 at 100°C</em>
kc = ![\frac{[NO_{2}]^2}{[N_{2}O_{4}]}](https://tex.z-dn.net/?f=%5Cfrac%7B%5BNO_%7B2%7D%5D%5E2%7D%7B%5BN_%7B2%7DO_%7B4%7D%5D%7D)
In equilibrium:
0,211 = ![\frac{[NO_{2}]^2}{[0,00251]}](https://tex.z-dn.net/?f=%5Cfrac%7B%5BNO_%7B2%7D%5D%5E2%7D%7B%5B0%2C00251%5D%7D)
5,2961x10⁻⁴ = [NO₂]²
<em>0,0230 M = [NO₂]</em>
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I hope it helps
