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
Bumek [7]
3 years ago
12

Match the scientists to their contributions to the development of the periodic table.

Chemistry
1 answer:
zloy xaker [14]3 years ago
4 0

Answer:

1. Dmitri Mendeleev

2. Johann Dobhereiner

3. John Newlands

4. Henry Moseley

If you find this helpful please give me Brainliest award

You might be interested in
Zinc reacts with iron (iii) chloride yielding zinc chloride plus iron
olasank [31]

Answer:

I don't see a specific question, so I'll make a few comments and hope that answers the reason for the post.

Explanation:

Zinc(Zn) does react with iron chloride, since zinc is a more reactive metal than the iron.

When Zn is introduced to an iron (III) chloride solution, the Zn disoplaces the Fe atom in a displacement reaction.

The chemical equation of the reaction:

Zn + Fe(III)Cl3 → ZnCl3 + Fe

Energy is often realeased in this type of reaction, since the resulting chemical products have a lower energy that the reactants.

There are several metals more reactive than iron.  One of the more interesting examples of a highly exothermic reaction with iron chloride (rust) is the reaction of aluminum with iron chloride.  `This is highly exothermic and is labelled a thermite reaction.  It provides a spectacular flame that is not enough to weld railroad tracks together.

6 0
2 years ago
HBrO3 <br> A. All non metals “acid subcategory”
Irina-Kira [14]
Non metals acid subcategories
4 0
3 years ago
A gas at 300 k and 4.0 atm is moved to a new loacation with a temperature of 250 k. The volume changes from 5.5 L to 2.0 L. What
alexgriva [62]
Answer is: <span>the pressure of the gas is 9,2 atm.
</span>p₁ = 4,0 atm.
T₁ = 300 K.
V₁ = 5,5 L.
p₂ = ?
T₂ = 250 K.
V₂ = 2,0 L.
Use combined gas law - the volume of amount of gas is proportional to the ratio of its Kelvin temperature and its pressure.<span> 
</span>p₁V₁/T₁ = p₂V₂/T₂.
4 atm · 5,5 L ÷ 300 K  = p₂ · 2,0 L ÷ 250 K.
0,0733 = 0,008p₂.
p₂ = 9,2 atm.

4 0
3 years ago
A particular solution of NaOH has hydronium concentration of 4x10-9 M. what is the solution’s pH?
bearhunter [10]

Answer:

The pH of the solution is 8, 40-

Explanation:

The pH indicates the acidity or basicity of a substance. PH values between 0 and less than 7 indicate acidic solutions, 7 neutral and greater than 7 to 14 basic. It is calculated as

pH = -log (H30+)

pH= -log (4x10-9M)

<em>pH=8,40</em>

8 0
3 years ago
Protons, neutrons, and electrons.
natima [27]
What are you asking?

8 0
3 years ago
Other questions:
  • A librarian is interested in the numbers of books that visitors check out from the library. She examines the checkout records of
    6·2 answers
  • _______________ is when a compound containing carbon and hydrogen (and sometimes oxygen) combines with oxygen gas to produce car
    12·1 answer
  • Match each organ or function with its body system.
    10·2 answers
  • Is a seed a living thing?why
    12·2 answers
  • Which factors affect a river's load?
    15·2 answers
  • Which of the following describes the greenhouse effect
    12·2 answers
  • What element is solid at room temperature shiny malleable and a good conductor of heat
    14·1 answer
  • Wrrite any 4 importance of nitrogen​
    9·1 answer
  • How many grams of H3PO4 are in 234 mL of a 2.5 M solution of H3PO4?
    13·1 answer
  • What is a disadvantage of using solar energy?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!