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
abruzzese [7]
3 years ago
12

5 physical properties of osmium

Chemistry
1 answer:
lisabon 2012 [21]3 years ago
6 0
In 1803AD, Osmium was discovered by Smithson Tennant when dissolving an impure sample of platinum in aqua regia, a mixture of hydrochloric and nitric acids. He was able to determine that the black powder left behind after dissolving the platinum was actually a mixture of two new elements, indium and osmium.

•Osmium is a bluish-white and shiny metal.

•Osmium is very hard and is brittle even at very high temperatures.

•Osmium has the lowast vapor pressure and the highest melting point among the platinum group of metals.

•Osmium's density is slightly more than iridium hence is credited as the heaviest element.
You might be interested in
Why do plant animal cells both have mitochondria?
LuckyWell [14K]
The mitochondria is the powerhouse of a cell. They are important because they are an energy factor for both plant and animal cells. They take the food you eat, and turn that as energy for the rest of the cell to use. It is critical that every cell has one to survive whether plant or animal.
5 0
3 years ago
PLEASE HELP!<br><br> List the 5 basic steps of the scientific method in order
Kruka [31]
<span>Step 1: Ask a question or identify a problem. ...Step 2: Background research. ...Step 3: Form a hypothesis. ...Step 4: Experiment and observe. ...<span>Step 5: Draw a conclusion.</span></span>
3 0
3 years ago
A 0.055 mol sample of formaldehyde vapor, CH2O, was placed in a heated 500 mL vessel and some of it decomposed. The reaction is
Elis [28]

Answer:

Kc for this reaction is 0.06825

Explanation:

Step 1: Data given

Number of moles formaldehyde CH2O = 0.055 moles

Volume = 500 mL = 0.500 L

At equilibrium, the CH2O(g) concentration = 0.051 mol

Step 2: The balanced equation

CH2O  <=>  H2 + CO

Step 3: Calculate the initial concentrations

Concentration = moles / volume

[CH2O] = 0.055 moles . 0.500 L

[CH2O] = 0.11 M

[H2] = 0M

[CO] = 0M

Step 4: The concentration at the equilibrium

[CH2O] = 0.11 - X M = 0.051 M

[H2] = XM

[CO] = XM

[CH2O] = 0.11 - X M = 0.051 M

X = 0.11 - 0.051 = 0.059

[H2] = XM = 0.059 M

[CO] = XM = 0.059 M

Step 5: Calculate Kc

Kc = [H2][CO]/[CHO]

Kc = (0.059 * 0.059) / 0.051

Kc = 0.06825

Kc for this reaction is 0.06825

7 0
3 years ago
What is the first tropical cyclone of the year 2020 ?​
astraxan [27]

Answer:

<h2>belajar jangan malas malas</h2>
5 0
3 years ago
What is the correct definition of a mixture?
jeka57 [31]

Answer:

a substance made by mixing other substances together.

Explanation:

A mixture is a substance made by mixing two or more substances together.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What are the three things chloroplasts needs in order to complete photosynthesis?
    13·1 answer
  • 2.38 grams of uranium is heated in a current of air. The resulting oxide
    6·1 answer
  • Some plant seeds are adapted to develop only at extremely high temperatures. For what environmental change are
    9·2 answers
  • 67.029g to three significant figures
    15·2 answers
  • HELP! THIS IS SCIENCE
    12·2 answers
  • Question 8 of 10
    9·2 answers
  • How much heat is required to raise the temperature of 179g of acetic acid, CH3COOH, from 250C to 82.70C?
    5·1 answer
  • What's the mass of methanol?
    6·2 answers
  • The heat flux, or the rate of heat transfer per unit area, is measured in watts (Watts) only A. TRUE B. FALSE
    6·1 answer
  • Suppose the scenario of the mystery creature in the garden was a real situation. How could you apply your knowledge of classific
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!