<p>Q</p>
<p>For the multiple step reaction mechanism</p>
<p>Slow NO + Br2 ---> NOBr2
Fast NOBr2 + NO ----> 2 NOBr
Net 2 No + Br2 ----> 2 NOBr</p>
<p>What would be the correct rate law?</p>
<p>For the multiple step reaction mechanism</p>
<p>Slow NO + Br2 ---> NOBr2
Fast NOBr2 + NO ----> 2 NOBr
Net 2 No + Br2 ----> 2 NOBr</p>
<p>What would be the correct rate law?</p>
<p>I am just guessing but here goes. The slow reaction determins the rate so:
Rate=k[NO][Br]
My question:
What is the difference between alkenes, alkanes, and alkynes?
Good Luck!!</p>
<p>Alkanes have single bonds, alkenes have double bonds, and alkynes have triple bonds.</p>
<p>My q.
When color is Ag2CrO4?</p>
<p>no idea, but i'm guessing white?</p>
<p>list the following from the least reactive to the most reactive:
Na, Ca, Mg, K, Cs, Zn</p>
<p>Im guessing its Zn, Mg, Ca, Na, K, Cs.</p>
<p>What is Gibbs free energy and if delta S is positive, it is spontaneous?</p>
<p>Gibbs free energy is the energy available in the universe for work. If ΔS is positive, that means the entropy is positive and therefore IS SPONTANEOUS. Entropy is the randomness/disorder of the universe, or as my teacher likes to say...spreadiness. ;)</p>
<p>EDIT: I forgot. It also depends on the ΔH. If ΔH is negative and ΔS is positive, the reaction is spontaneous. If ΔS is positive and ΔH is positive, a process is spontaneous at high temperatures, where exothermicity plays a small role in the balance.</p>
<p>Oh yeah my question. </p>
<p>Name all five tenets of Dalton's Atomic Theory.</p>
<ul>
<li>Elements are made of tiny particles called atoms.
<ul>
<li>All atoms of a given element are identical.</li>
<li>The atoms of a given element are different than those of any other element.</li>
<li>Atoms of one element can combine with atoms of other elements to form compounds. A given compound always has the same relative numbers of types of atoms.</li>
<li>Atoms are indivisible in chemical processes. Atoms are not created nor destroyed in chemical reactions. A chemical reaction simply changes the way atoms are grouped together.</li>
</ul></li>
</ul>
<p>Is delta S is negative, is it automatically nonspontaneous no matter what delta H is?</p>
<p>deltaG = delta H - T delta S</p>
<p>No, as long as delta H is very negative (very exothermic), the reaction can be spontaneous. (rxns are spontaneous if delta G is negative).</p>
<p>Q: Alpha, beta, and gamma particles: which type is most penetrating?</p>
<p>gamma particles</p>
<p>Describe Rutherford's experiment.</p>
<p>his atomic theory describes the atom as having a central positive nucleus surrounded by negative orbiting electrons.</p>
<ol>
<li><p>A two bulbed flask contains four particles. What is the probability of finding all four particles in only one of the bulbs?</p>
<pre><code> A 0.0625 %
B 0 %
C 6.25 %
D 11.3 %
E 25 %
</code></pre></li>
</ol>
<p>1/16 or 0.0625. </p>
<p>Four of the following factors can affect the forward rate of a chemical reaction.
Which one cannot affect this rate?
1) temperature
2) particle size of solid reactants
3) concentration of reactants
4) presence of a catalyst
5) removal of some of the products</p>
<p>^^^ wrong, it was 6.25</p>
<p>(so ur question cant be answered yet)</p>
<ol>
<li><p>Which of the following statements is true?</p>
<pre><code> A In a spontaneous process, DG has a positive value
B The entropy of the universe is increasing
C Exothermic reactions are always spontaneous
D A system at constant temperature cannot experience entropy changes
E For a process to be spontaneous, the number of moles of product must exceed the number of moles of reactant
</code></pre></li>
</ol>
<p>0.0625 = 6.25%</p>
<p>oh sorry lol im out of it</p>
<p>answrr to ur question quickquiz is choice 2) particle size of solid reactants</p>
<p>Its ok. Yeah I put 2 for that one too. You can the next question ...</p>
<ol>
<li>Which of the following statements is true?</li>
</ol>
<p>A In a spontaneous process, DG has a positive value </p>
<p>B The entropy of the universe is increasing </p>
<p>C Exothermic reactions are always spontaneous </p>
<p>D A system at constant temperature cannot experience entropy changes </p>
<p>E For a process to be spontaneous, the number of moles of product must exceed the number of moles of reactant</p>
<p>how would you calculate the probability? assuming the 2 bulbs are the same, i would think that at equilibrium, all gases are present in both bulbs, with the denser gases at the bottom.</p>
<p>key: all FOUR....in only ONE of the four...u could square 4 into 16 and only one would be 1/16, but i could be done another way too</p>