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
Alla [95]
3 years ago
6

WILL GIVE OUT BRAINLIEST..

Chemistry
1 answer:
pogonyaev3 years ago
3 0
Iron-Metal
Boron, Carbon- Same period
Cobalt,Iron- Same family
Hydrogen- smallest atomic number
If C is 20 D should be 21
You might be interested in
To what volume should 25ml of 15m nitric acid be diluted to prepare a 3m solution
Maurinko [17]

We can use the dilution formula to find the volume of the diluted solution to be prepared

c1v1 = c2v2

Where c1 is concentration and v1 is volume of the concentrated solution

And c2 is concentration and v2 is volume of the diluted solution to be prepared

Substituting the values in the equation

15 M x 25 mL = 3 M x v2

v2 = 125 mL

The 25 mL concentrated solution should be diluted with distilled water upto 125 mL to make a 3 M solution

6 0
3 years ago
Can the nature of a reactant be altered to speed up reaction
Step2247 [10]

Answer:

yeet

Explanation:

yeet

6 0
3 years ago
Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy of the following chemical rea
Aleksandr [31]

Answer:

ΔS° = - 47.2 J/mol.K

Explanation:

  • P4O10 + 6H2O → 4H3PO4

ΔS°= 4(S°mH3PO4) - 6(S°mH2O) - S°mP4O10

∴ S°mH2O(l) = 69.9 J/mol.K

∴ S°mP4O10 = 231 J/mol.K

∴ S°mH3PO4 = 150.8 J/mol.K

⇒ ΔS° = 4*(150.8) - 6*(69.9) - 231

⇒ ΔS° = - 47.2 J/mol.K

5 0
3 years ago
Read 2 more answers
Write and label the density triangle
Slav-nsk [51]

Answer:

It is basically a way of telling you how to solve for different variables in the equation d=m/v

Explanation:

8 0
3 years ago
How many moles are present in 2.126 g of H2O2 ?
Vinil7 [7]

Answer:

molecular weight of H2O2 or grams. This compound is also known as Hydrogen Peroxide. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles H2O2, or 34.01468 grams.

1 grams H2O2 is equal to 0.029399071224542 mole.

1 grams H2O2 to mol = 0.0294 mol

10 grams H2O2 to mol = 0.29399 mol

20 grams H2O2 to mol = 0.58798 mol

30 grams H2O2 to mol = 0.88197 mol

40 grams H2O2 to mol = 1.17596 mol

50 grams H2O2 to mol = 1.46995 mol

100 grams H2O2 to mol = 2.93991 mol

200 grams H2O2 to mol = 5.87981 mol

6 0
3 years ago
Read 2 more answers
Other questions:
  • You wish to make a 0.435 M perchloric acid solution from a stock solution of 3.00 M perchloric acid. How much concentrated acid
    12·1 answer
  • Based on table j, which metal is more active than tin but less active than zinc
    10·2 answers
  • According to the law of conservation of matter, which statement about chemical reactions is true?
    14·1 answer
  • Define and describe four properties of elements that display periodicity (show a trend) on the periodic table.
    14·1 answer
  • Why can't liquids change volume but gasses can?
    12·2 answers
  • 3. Why do you think the image of the pencil inside the beaker of water is different than the pencil
    13·1 answer
  • How many moles of glucose does 1.2 x 10^24 molecules represent
    9·1 answer
  • Can someone Help pls :)
    6·1 answer
  • Which statement best describes the graph of the relationship between the volume and temperature of an enclosed gas?
    5·2 answers
  • What is a unique quality of the halogens/halides?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!