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
Nostrana [21]
2 years ago
5

The periodic table is based on an element's

Chemistry
2 answers:
uranmaximum [27]2 years ago
7 0

The correct answer is:

B.  atomic number.


Stels [109]2 years ago
4 0
The answer will be B.
You might be interested in
A fuel cell designed to react grain alcohol with oxygen has the following net reaction:
sertanlavr [38]

Answer:

b. E = 2,28V

Explanation:

The maximum work is the same than ΔG. As ΔG could be written as:

ΔG = nFE <em>(1)</em>

Where n is moles of electrons transferred, F is faraday constant (96485 J/Vmol) and E is the voltage of the cell.

For the reaction:

CH₃OH(l) + ³/₂O₂(g) → CO₂(g) + 2H₂O(l)

The oxidation state of C in CH₃OH is -2 but in CO₂ is +4, that means transferred electrons are +4 - -2 = <em>6e⁻</em>

Replacing in (1):

1320x10³ J = 6mol e⁻×96485J/Vmol×E

<em>E = 2,28V</em>

<em></em>

I hope it helps!

8 0
3 years ago
How many protons, electrons, and neutrons does silver have
Vera_Pavlovna [14]

Answer:

Heat of vaporization: 250.580 kJ/mol. Number of Protons/Electrons: 47. Number of neutrons: 61. Classification: Transition Metal.

Number of Protons/Electrons: 47

Number of neutrons: 61

Classification: Transition Metal

Number of shells: 5

Explanation:

add 47 to 61 and its 108! hope its right! have a great day!

4 0
3 years ago
Read 2 more answers
What is the wavelength of a wave having a frequency of 2500 Hz
Lemur [1.5K]
We will assume that the wave is moving in free space, thus, the velocity of the wave would be equal to the speed of light = 3 * 10^8 meters/sec

The velocity of the wave can be calculated using the following rule:
velocity = frequency * wavelength where:
velocity = 3 * 10^8 m/sec
frequency = 2500 Hz
wavelength is the unknown that we want to calculate.

Substitute with the givens in the above equation to get the wavelength as follows:
3 * 10^8 = 2500*wavelength
wavelength = 120 * 10^3 meters
5 0
2 years ago
Read 2 more answers
What can you tell about element hydrogen
Vikki [24]

Answer:

At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H2. Since hydrogen readily forms covalent compounds with most nonmetallic elements, most of the hydrogen on Earth exists in molecular forms such as water

Explanation:

7 0
3 years ago
Aluminum has a density of 2.70 g/mL. Calculate the mass (in grams) of a piece of aluminum having a volume of 353 mL .
vredina [299]
Mass=density·volume. The density is 2.70g/mL and the volume is 353mL. So you would multiply 2.70g/mL by 353mL which will give you 953.1g. Hope that helps :)
7 0
3 years ago
Other questions:
  • a running track has circumference of 400m. How many laps of the track should be completed during a 10km race
    12·1 answer
  • Which of these is not a covalent molecule?<br> 1. F2<br> 2. CO<br> 3. LiF<br> 4. NH3
    11·1 answer
  • Sugar when dissolved into water, propose whether the compound forms atoms, molecules or lattices. Justify you answer
    8·1 answer
  • Why does heating a liquid affect viscosity
    8·1 answer
  • what is the pressure of a mixture of co2, so2, and h2o gasses, if each gas has a partial pressure of 25 kpa?
    13·2 answers
  • PO3−4 what's the formula name?
    10·1 answer
  • Some G protein‑coupled receptors are sensitive to hormones such as angiotensin II and oxytocin and act through compounds such as
    14·1 answer
  • g A laboratory analysis of an unknown compound found the following composition: C 75.68% ; H 8.80% ; O 15.52%. What is the empir
    15·1 answer
  • 8 gm of pure calcium is treated with 50 gram of pure Hcl to give cacl2 and h2 .which is limiting reactant?​
    12·1 answer
  • Really need help with this! Chemistry
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!