Answer:
<em>think</em><em> </em><em>it's</em><em> </em><em>B</em>
Explanation:
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe.
<em>H</em><em>o</em><em>p</em><em>e</em><em> </em><em>it'll</em><em> </em><em>help</em><em>!</em>
<em>s</em><em>t</em><em>a</em><em>y</em><em> </em><em>safe</em><em>:</em><em>)</em><em> </em><em>^</em><em>-</em><em>^</em>
Based on the balanced chemical reaction presented above, every mole of magnesium (Mg) yields one mole of diatomic hydrogen (H2). When converted to masses, every 24.3 grams of magnesium yields 2 grams of hydrogen.
From the given, there are 20 grams of magnesium available for the reaction. With this amount, the expected yield of hydrogen is 1.646 grams. To calculate the percent yield, divide the actual yield to the hypothetical yield.
*The case is impossible because the actual yield is greater than the theoretical yield.
If we assume that there had been a typographical error and that the actual yield is 0.7 grams instead of 1.7 grams, the percent yield becomes 42.5%. Thus, the answer is letter E.
Hello!
From tables, we know that the
pKa for Methylamine CH₃NH₂ is 10,61. Now, we can apply the
Henderson-Hasselbach's equation and clear for the ratio of CH₃NH₂ to CH₃NH₃Cl
![pH=pKa + log( \frac{[CH_3NH_2]}{CH_3NH_3Cl} ) \\ \\ \frac{[CH_3NH_2]}{CH_3NH_3Cl}= 10^{pH-pKa}= 10^{10,12-10,61}=0,32](https://tex.z-dn.net/?f=pH%3DpKa%20%2B%20log%28%20%5Cfrac%7B%5BCH_3NH_2%5D%7D%7BCH_3NH_3Cl%7D%20%29%20%5C%5C%20%5C%5C%20%5Cfrac%7B%5BCH_3NH_2%5D%7D%7BCH_3NH_3Cl%7D%3D%2010%5E%7BpH-pKa%7D%3D%2010%5E%7B10%2C12-10%2C61%7D%3D0%2C32)
So, the ratio of CH₃NH₂ to CH₃NH₃Cl should be
0,32Have a nice day!
The angle of incoming sunlight varies at different places.
Here, the number of protons are different. As they have different atomic numbers, it would be: "Isobars"
Hope this helps!