1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Serjik [45]
3 years ago
8

What is the purpose of attaching the clip/ clamp with graphite of the the pencil to the battery?

Chemistry
1 answer:
Sonja [21]3 years ago
4 0
The pencil attached to the negative terminal of the battery collects hydrogen gas while the one connected to the positive terminal collects oxygen.
You might be interested in
A study of the decomposition reaction 3RS2  3R + 6S yields the following initial rate dat
shutvik [7]
Missing question: What is the rate constant for the reaction?
<span>[RS2](mol L-1) Rate (mol/(L·s))
0.150                0.0394
0.250                0.109
0.350                0.214
0.500                0.438</span>
Chemical reaction: 3RS₂ → 3R + 6S.
Compare second and fourth experiment, when concentration is doubled, rate of concentration is increaced by four. So rate is:
rate = k·[RS₂]².
k = 0,438 ÷ (0,500)².
k = 1,75 L/mol·s.
3 0
2 years ago
Which electron configuration represents the electrons of an atom in an excited state? * 2-3 2-7-1 2-8 2-8-1​
Lemur [1.5K]

2-7-1

<h3>Further explanation </h3>

Electrons can move the shell up or down by releasing energy or absorbing energy  

Excited electrons show higher electron transfer to the shell by absorbing energy  

So it can be concluded that there are 2 conditions:  

Ground state is the state of electrons filling shell with the lowest energy levels.  

Excited state is the state of electrons which occupies a higher energy level  

The state of excited electrons can be seen from the presence of electrons which do not fill the skin completely but fill the skin afterward  

2-7-1

From its 8 electron configuration, filling 3 shells, 2 electrons in the firs shell, 7 electrons in the second shell and 1 electron in the third shell

the electrons in the third shell should fill the electrons in the second shell first according to Aufbau rule (lower energy shells)

\tt  1s^22s^22p^4\rightarrow ground~state\\\\1s^22s^22p^33s^1\rightarrow excited~state

8 0
3 years ago
Answer this question:
almond37 [142]

Answer:

Meteorologists look at data help from the computer about temperature, pressure, humidity, and wind speed, among many other data points to try and accurately predict the weather.

5 0
2 years ago
What element has 81 protons in the nuclei of its atoms?
WITCHER [35]
Thallium has got 81 protons

<u>Have a nice days.......</u>
7 0
2 years ago
Read 2 more answers
Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in aqueous solution. What should be the molarity of
dsp73
The first thing we need to do here is to recognize the unit of molarity and the units of the given percentage of nitric acid.

Molarity is mol HNO3 / L of solution. This is our aim

The given percentage is 0.68 g HNO3/ g solution

multiplying this with density to convert g solution into mL solution and dividing with the molecular weight of HNO3 (63 g/mol) to convert g HNO3 to mol. Therefore we obtain

0.016 mol/ mL or 16.23 mol/ L (M)

6 0
3 years ago
Other questions:
  • A chemist designs a galvanic cell that uses these two half-reactions:
    14·1 answer
  • Ammonia is produced industrially via this exothermic reaction.
    9·1 answer
  • For each (P, V) pair, type the pressure in the x-column and the volume in the y-column. Then click “Resize window to fit data.”
    9·1 answer
  • Why 5.67 + 0.00032 = 5.67 (and not 5.7 or 5.67032 or any other number).
    6·1 answer
  • If D+2 would react with E-1, what do you predict to be the formula?
    9·1 answer
  • What is the oxidation state of nitrogen in NaNO2?<br> (1) +1 (3) +3<br> (2) +2 (4) +4
    13·1 answer
  • 1. Marque a alternativa que melhor explica o que aconteceu com o átomo ao longo da história.
    15·2 answers
  • Which of the following is not true
    14·1 answer
  • HELP 20 POINTS
    14·1 answer
  • 1. Aspirin, also known as acetylsalicylic acid (C9H8O4) is a medication, often used to relieve minor aches and pains and reduce
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!