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vova2212 [387]
3 years ago
9

At STP, which sample contains the same number of molecules as 3.0 liters of hydrogen gas?

Chemistry
1 answer:
uranmaximum [27]3 years ago
5 0
<span>1. 5.6 L of NO2(g)
2. 7.5 L of H2(g)
3. 11.2 L of N2(g)
4. 22.4 L of CO(g)</span>
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5. An element whose highest occupied s sublevel and a nearby d sublevel <br> contain electrons
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Answer:

                    Transition Element

Explanation:

                     Transition elements are defined as those elements which can form at least one stable ion and has partially filled d-orbitals. They are also characterized by forming complex compounds and having different oxidation states for a single metal element.

                      Transition metals are present between the metals and the non metals in the periodic table occupying groups from 3 to 12. There general electronic configuration is as follow,

                                                   (n-1)d ¹⁻¹⁰ns ¹⁻²

The general configuration shows that for a given metal, the d sublevel will be in lower energy level as compared to corresponding s sublevel. For example,

Scandium is present in fourth period hence, its s sublevel is present in 4rth energy level so its d sublevel will be present in 3rd energy level respectively.

Hence, we can conclude that for transition metals the electron are present in highest occupied s sublevel and a nearby d sublevel .

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3 years ago
Nuclear Chemistry Writing Assignment
pogonyaev

Answer:

21 years

% of parent isotope remaining before safe

6.25%

Explanation:

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A compound secreted by honeybees to paralyze intruders in their hive is known as 2-heptanone. The formula for this 2-heptanone c
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(Pleaseeee help me) List 3 things you should talk about in a good conclusion?
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1) It recaps where you’ve been.
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2) It recaps where you are.
This is an aspect applicants often forget to include. You are at a crucial junction between the past and the future, and this program you’re applying to is the bridge. Recap why this program is an important stepping stone in your career path and how it’s a good fit for you personally.
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Most importantly, you must tell the admissions team what your long-term career goal is. The more specific you can be, the better (even if you aren’t 100% sure, it’s best to come off as confident that you know what you want!). For example, rather than just recapping that you want to become a doctor, you can share additional sub-goals, such as wanting to be a doctor who works in low-income, inner city hospitals since you volunteered at those types of facilities before. Or perhaps you plan to go back to the country where you grew up and work as a surgeon there since they are in such short supply.
Bring It Together
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Which piece of glassware shown below is used to hold and dispense a solution of known concentration during a titration?
Musya8 [376]

Answer:

Answer C

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