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
anastassius [24]
3 years ago
5

Oxygen, Sulfur, and Selenium make up a triad. The atomic mass of oxygen is 15.999 amu, the atomic mass of selenium is 78.96 amu.

Use this information to calculate the atomic mass of sulfur.
Chemistry
1 answer:
3241004551 [841]3 years ago
6 0

Answer:

Explanation:

Selenium is a chemical element with the symbol Se and atomic number 34.

...

Selenium

Melting point 494 K ​(221 °C, ​430 °F)

Boiling point 958 K ​(685 °C, ​1265 °F)

Density (near r.t. ) gray: 4.81 g/cm3 alpha: 4.39 g/cm3 vitreous: 4.28 g/cm3

when liquid (at m.p. ) 3.99 g/cm3

You might be interested in
EASY 100 POINTS, WILL MARK BRAINLEST, 2 QUESTIONS, SHOW YOUR WORK OR NO POINTS
SVETLANKA909090 [29]

Answer:

Explanation:

1. Please provide the enthalpy info - I will work on it with the info

2.

i) Reaction a should be modified to match the number of S in equation:

 2S + 2O2 -> 2SO2     deltaH = -370kJ

ii) Reaction b should be written reversely to match the reactants of SO2:

 2SO2 + O2 -> 2SO3     deltaH = 256kJ

iii) Adding the equations together:

 2S + 3O2 -> 2SO3

iv) Enthalpy of the combined reaction = -370+256 = -114kJ

 It is negative so the reaction is exothermic.

5 0
3 years ago
Read 2 more answers
Which of these elements could be used in industry to control electron flow?
anzhelika [568]

Answer:

the answer is calcium

Explanation:

6 0
3 years ago
. A base increases the OH- ion concentration of water.. True. False
HACTEHA [7]
It is a completely true statement that a <span>base increases the OH- ion concentration of water. The correct option among the two options that are given in the question is the first option. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span>
8 0
3 years ago
Read 2 more answers
True or false?
Virty [35]
The answer would be true
3 0
3 years ago
Which type of matter has a definite composition througout and is made of more than on type of element
zvonat [6]

Answer:

Compound

Explanation:

It has a definite composition throughout and can be made of more than one type of element.

4 0
3 years ago
Other questions:
  • Compounds usually have the same properties as the bonds they are made from true or false
    11·1 answer
  • What is the identity of the element which had the following electron configuration? 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^5 ​
    12·1 answer
  • The total volume in milliliters of a glucose-water solution is given by the equation below: V = 1001.93 + 111.5282m + 0.64698m^2
    9·1 answer
  • The planet in the solar system that is most similar to Earth is
    5·1 answer
  • How do the particles of a gas differ from the particles of a solid?
    13·1 answer
  • Question 4 of 20
    11·1 answer
  • I need help, please answer
    9·2 answers
  • Facts about :<br> Melting Point
    7·1 answer
  • Use the drop-down menus to answer the questions.
    5·2 answers
  • a solution k is saturated at 33 g solute in 100g solvent if a 50g solute is added to 200g solvent solution k is​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!