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
Alex777 [14]
3 years ago
8

In which group of the Periodic Table do most of the elements exhibit both positive and negative oxidation states?

Chemistry
1 answer:
Shtirlitz [24]3 years ago
4 0
C i think but you should pick it anyway
You might be interested in
Name all nonmetals that are noble has.<br> PLEASE HELP ASAP ILL GIVE YOU BRAINLIEST
miss Akunina [59]
Hellium argon neon xenon krypton randon oxygen fluorine chlorine bromine
4 0
3 years ago
What is the atomic number of the yet-undiscovered element directly below francium ( Fr) in the periodic table?
kakasveta [241]
The atomic number of Francium is 87.
4 0
3 years ago
A student needed to make 100.0 mL of 0.20M NaOH solution. How many grams of sodium hydroxide does the student need to weigh out
GuDViN [60]

Answer:

0.08 g

Explanation:

100.0 mL = 0.10 L

Multiply the volume by the molarity to find moles.

0.10 L × 0.20 M = 0.002 mol

Convert moles to grams.

0.002 mol × 40 g/mol = 0.08 g

4 0
3 years ago
A compound is 80.0% carbon and 20.0% hydrogen by mass. assume you have a 100.-g sample of this compound. the molar mass of the c
ch4aika [34]
Basis of the calculation: 100g
 
For Carbon: 
 Mass of carbon = (100 g)(0.80) = 80 g
  Number of moles of carbon = (80 g)(1 mole / 12g) = 20/3

For Hydrogen:
  Mass of hydrogen = (100 g)(0.20) = 20 g
     Number of moles of hydrogen = (20 g)(1 mole / 1 g) = 20

Translating the answer to the formula of the substance,
     C20/3H20

Dividing the answer,
    CH3

The molar mass of the empirical formula is:
    12 + 3 = 15 g/mol

Since, the molar mass given for the molecular formula is 30.069 g/mol, the molecular equation is,
    C2H6

ANSWER: C2H6

 
4 0
3 years ago
Why is the greenhouse effect important to life on earth
navik [9.2K]

Answer:

Because Greenhouse gases let the sun's light shine onto the Earth's surface, but they trap the heat that reflects back up into the atmosphere. And this way, they act like the glass walls of a greenhouse. This greenhouse effect also keeps the Earth warm enough to sustain life.

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • The following initial rate data are for the reaction of tertiary butyl bromide with hydroxide ion at 55 oC:
    9·1 answer
  • What mass of magnesium would combine with exactly 16.0 grams of oxygen
    5·1 answer
  • What substance with only one type of particle called
    5·1 answer
  • PLEASE I NEED HELP!!!!!!!!!!!!! I AM GIVING THE HIGHEST POINTS POSSIBLE! PLEASE, I AM FAILING, I JUST NEED HELP!!!!!!!!!!!!!!!!!
    12·2 answers
  • Is iron a substance or mixture ?
    13·2 answers
  • How are organising my time?
    6·1 answer
  • How to find the valency of a polyatomic ion?
    5·1 answer
  • What is the passage from the mouth to the larynx and esophagus?
    6·1 answer
  • Put 30,000,000,000 into scientific notation
    5·2 answers
  • 6Atoms of which of the following elements will
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!