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
frutty [35]
3 years ago
10

Sally does the work in 2.3 hours and Pete does 2.5

Chemistry
2 answers:
Yuri [45]3 years ago
5 0
Pete because 2.5 x 2.3 is faster
Ipatiy [6.2K]3 years ago
5 0
I agree with the other comment
You might be interested in
12. A helium-filled weather balloon has a volume of 2.4 x 102 L at 99 kPa pressure and a
Luba_88 [7]

Answer:

The answer to your question is 8.74 g of He

Explanation:

Data

V = 2.4 x 10² L

P = 99 kPa

T = 0°C

mass = ?

Process

1.- Convert kPa to atm

P = 99 kPa = 99000 Pa

                   1 atm --------------- 101325 Pa

                    x       ---------------   99000 Pa

                   x = (99000 x 1) / 101325

                   x = 0.977 atm

2.- Convert temperature to °K

°K = 273 + 0

°K = 273

3.- Substitution

      PV = nRT

- Solve for n

      n = PV / RT

      n = (0.977)(2.4 x 10²) / (0.082)(273)

      n = 24.48 / 22.386

      n = 1.093 moles

4.- Calculate the grams of He

          8 g -------------------- 1 mol

           x    -------------------- 1.093 moles

           x = (1.093 x 8) / 1

           x = 8.74 g                      

6 0
3 years ago
Read 2 more answers
Infrared (IR) and Nuclear Magnetic Resonance (NMR) are two spectroscopic techniques you've encountered in organic chemistry I, C
zalisa [80]

Answer:

The solution to this question can be defined as follows:

Explanation:

Please find the attached file for the solution:

8 0
3 years ago
These questions are from an experiment where we had a mixture of Ferrocene, acetylferrocene and diacetyl ferrocene and we separa
PilotLPTM [1.2K]

Answer:

Explanation:

The polarity of the 3 compounds would be in the order of

Ferrocene < Acetylferrocene < Diacetylferrocene

Your TLC data has to also support this observation . This can be checked by measuring the values of Rf ( Retention factor = distance travelled by solute/solvent ) .The Rf values also has to follow this particular order: -

Ferrocene > acetylferrocene > diacetylferrocene

2) Hexane happens to be a non-polar solvent. The polarity of hexane can be increased if some polar solvents for example, ethyl and methylene chloride etc are added

Therefore, in the increasing order of solvents polarity, we have

Hexane < 1:1 mixture of hexane: methylene chloride < 9:1 mixture of methylene chloride:

3) Chromatographic techniques all have a stationary phase in addition to a mobile phase. In the case of column chromatography, the silica gel will be the stationary phase and the solvent that will be poured will be the mobile phase.

4) The TLC and column chromatography both happen to have the same stationary phase which is the silica gel. Also, the same solvent mixture is used in both the techniques. This makes the result of the 2 to be almost the same. The difference seen between them is that, TLC works against the gravity while on the other hand column chromatography works in the direction of the gravity.

5) The key feature in the IR spectra of the acetylferrocene that will be absent in the spectra of ferrocene is the presence of carbonyl stretching frequency at close to 1700 per cm(cm-1). This peak is easily differentiated between both acetyl ferrocene and ferrocene.

4 0
3 years ago
Which statement describes how an atom in the ground state becomes excited
Marysya12 [62]
The ground<span> state of an electron, the energy level it normally occupies, is the state of lowest energy for that electron. ... An electron </span>can become excited<span> if it is given extra energy, such as if it absorbs a photon, or packet of light, or collides with a nearby </span>atom<span> or particle. (I do not take credit for that answer)</span>
4 0
3 years ago
Please help someone asap
stiv31 [10]

Answer:

transitive verb. 1 : to prove wrong by argument or evidence : show to be false or erroneous. 2 : to deny the truth or accuracy of refuted the allegations.

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Chemical equation of 2 atoms of potassium metal react with 2 molecules of liquid water to produce 2 molecules of Solid potassium
    10·1 answer
  • What is the hydroxide concentration of a solution with a pH of 12.80?
    13·1 answer
  • If an atom has an electron in the n = 4 state with ml = 2, what are the possible values of l?
    5·1 answer
  • What evidence of a chemical reaction might you see in bleaching a stain
    8·2 answers
  • Which two elements have the most similar chemical properties?
    12·2 answers
  • How much of a 15.0M stock solution do you need to prepare 250ml of a 2.35ml hf solution?
    7·1 answer
  • Which of these is a mechanism that could lead to a climate tipping point?
    8·1 answer
  • What is the molarity of a solution containing 3.6 mol of KCl in 750 mL?
    11·1 answer
  • Which of the following molecules has a trigonal planar shape?​
    8·2 answers
  • HELP PLEASE!!! Which of the following best describes the nitrogen fixation process?(1 point) Producers convert nitrogen gas into
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!