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
nadya68 [22]
3 years ago
7

What does the atomic number tell us about any element?​

Chemistry
2 answers:
Vlada [557]3 years ago
4 0

How many atoms are the n each element

kobusy [5.1K]3 years ago
3 0

uniquely identifies a chemical element. yupppppp

You might be interested in
Write the complete chemical equations for production of pentanol from pentene​
ollegr [7]

Answer:

hope this helped :( got this from my friend a long time ago but still not sure if it's really correct this

3 0
2 years ago
A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe
konstantin123 [22]

Answer:

it will dilute to its natrual state. so c

Explanation:

4 0
3 years ago
Read 2 more answers
How many significant figures are in 195.01
Masja [62]

Answer:

difficult to answer, need a bit more detail

5 0
3 years ago
Chris noticed a high-pressure system in the weather forecast for Monday
Alchen [17]

Answer:

A. Clear and Sunny

Explanation:

The answer would be A. Clear and Sunny. A high pressure system occurs where the air mass above the Earth is denser than in surrounding areas, and therefore exerts a higher force or pressure. They usually happen with li9ght winds. Using process of elimination, it could not be D. Warm and Stormy, C. Cloudy and Rainy, or B. Cold and Stormy because all have wet climates.

5 0
2 years ago
Calculate the standard reaction Gibbs free energy for the following cell reactions: (a) 2 Ce41(aq) 1 3 I2(aq) S 2 Ce31(aq) 1 I32
Law Incorporation [45]

<u>Answer:</u>

<u>For a:</u> The standard Gibbs free energy of the reaction is -347.4 kJ

<u>For b:</u> The standard Gibbs free energy of the reaction is 746.91 kJ

<u>Explanation:</u>

Relationship between standard Gibbs free energy and standard electrode potential follows:

\Delta G^o=-nFE^o_{cell}           ............(1)

  • <u>For a:</u>

The given chemical equation follows:

2Ce^{4+}(aq.)+3I^{-}(aq.)\rightarrow 2Ce^{3+}(aq.)+I_3^-(aq.)

<u>Oxidation half reaction:</u>   Ce^{4+}(aq.)\rightarrow Ce^{3+}(aq.)+e^-       ( × 2)

<u>Reduction half reaction:</u>   3I^_(aq.)+2e^-\rightarrow I_3^-(aq.)

We are given:

n=2\\E^o_{cell}=+1.08V\\F=96500

Putting values in equation 1, we get:

\Delta G^o=-2\times 96500\times (+1.80)=-347,400J=-347.4kJ

Hence, the standard Gibbs free energy of the reaction is -347.4 kJ

  • <u>For b:</u>

The given chemical equation follows:

6Fe^{3+}(aq.)+2Cr^{3+}+7H_2O(l)(aq.)\rightarrow 6Fe^{2+}(aq.)+Cr_2O_7^{2-}(aq.)+14H^+(aq.)

<u>Oxidation half reaction:</u>   Fe^{3+}(aq.)\rightarrow Fe^{2+}(aq.)+e^-       ( × 6)

<u>Reduction half reaction:</u>   2Cr^{2+}(aq.)+7H_2O(l)+6e^-\rightarrow Cr_2O_7^{2-}(aq.)+14H^+(aq.)

We are given:

n=6\\E^o_{cell}=-1.29V\\F=96500

Putting values in equation 1, we get:

\Delta G^o=-6\times 96500\times (-1.29)=746,910J=746.91kJ

Hence, the standard Gibbs free energy of the reaction is 746.91 kJ

7 0
3 years ago
Other questions:
  • I'm iron and oxygen combine to form iron oxide (rust). list the reactants and products of this reaction.
    14·1 answer
  • A 0.4066 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl
    15·1 answer
  • What is the value of 200c on a Kelvin scale
    9·2 answers
  • Electron configuration for Ar
    6·1 answer
  • What are nucleotides, genes and genomes?
    5·1 answer
  • If the heat capacity of a 10 gram object is 300 J/C, the heat capacity of a 100 gram object of the exact same substance would be
    14·1 answer
  • How to make a covalent bond
    6·2 answers
  • A 17.98-g piece of iron absorbs 2056.5 joules of heat energy, and its temperature changes from 25°C to 200°C. Calculate the spec
    6·1 answer
  • Please :(<br> Describe the water cycle process starting from an afternoon thunderstorm.
    14·2 answers
  • A word used to describe if one substance can be dissolved in another
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!