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
gulaghasi [49]
3 years ago
15

Which group on the periodic table already stable?

Chemistry
2 answers:
viktelen [127]3 years ago
7 0
The noble gases AKA the column with full outermost valence shells. (Group 18)
Lunna [17]3 years ago
6 0
Noble gases. The ones on the right side.
You might be interested in
How many atoms of carbon are combined to with 2.81 moles of hydrogen atoms in a sample of the compound ethane, C2H6?
puteri [66]

Answer:

5.64×10²³ atoms C

Explanation:

Convert moles of H to moles of C:

2.81 mol H × (2 mol C / 6 mol H) = 0.937 mol C

Convert moles of C to atoms of C:

0.937 mol C × (6.02×10²³ atoms C / mol C) = 5.64×10²³ atoms C

5 0
3 years ago
Joseph drives 25miles North in 15 minutes then he drives 40 miles east in 30 minutes, then he uses cruise control option for 1 h
Musya8 [376]

Answer: 1.25 miles per minute

Explanation:

Average speed is the rate of change of total distance covered per unit time.

i.e Average speed = (Total distance / Time taken)

Total distance covered = (25miles + 40 miles + 70 miles + 15 miles)

= 150 miles

Total time taken = ( 15 minutes + 30 minutes + 1 hour + 15 minutes) = 120 minutes

Since 60 minutes = 1 hour, the total time taken is 120 minutes

Now, apply Average speed = (Total distance / Time taken)

= (150 miles / 120 minutes)

= 1.25 miles per minutes

Thus, Joseph drove with an average speed of 1.25 miles per minute.

7 0
3 years ago
This is the chemical formula for methyl acetate: CH32CO2. Calculate the mass percent of hydrogen in methyl acetate. Round your a
WITCHER [35]

<u>Answer:</u> The mass percent of hydrogen in methyl acetate is 8 %

<u>Explanation:</u>

The given chemical formula of methyl acetate is CH_3COOCH_3

To calculate the mass percentage of hydrogen in methyl acetate, we use the equation:

\text{Mass percent of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Mass of methyl acetate}}\times 100

Mass of hydrogen = (6 × 1) = 6 g

Mass of methyl acetate = [(3 × 12) + (6 × 1) + (2 × 16)] = 74 g

Putting values in above equation, we get:

\text{Mass percent of hydrogen}=\frac{6g}{74g}\times 100=8.10\%=8\%

Hence, the mass percent of hydrogen in methyl acetate is 8 %

8 0
3 years ago
How do this I’m in school really don’t know what to do
avanturin [10]

Answer:

you gotta rotate it 90 degrees and get that screen fixed

Explanation:

4 0
2 years ago
What is the atomic number of an atom?
ludmilkaskok [199]

Answer: The number of protons

Explanation:

4 0
2 years ago
Other questions:
  • You’re at the zoo and have a big red 1.80 L helium balloon. The barometric pressure today is 785 mmHg. Then you hear the roar of
    10·2 answers
  • For the reaction H2SO4 + 2Na2OH4 —&gt; Na2SO4 + 2H2O
    14·1 answer
  • Given that the vapor pressure of water is 17.54 torr at 20 °c, calculate the vapor-pressure lowering of aqueous solutions that a
    6·1 answer
  • During the 1960s and 1970s, Cesar Chavez
    13·1 answer
  • If there is currently 50kg of U-235 present in Oklo, how much must have been present 750 million years ago when the reaction too
    15·1 answer
  • Using the diagram below, which rock layer is older than the Chinle Formation?
    12·1 answer
  • In science, we like to develop explanations that we can use to predict the outcome of events and phenomena. Try to develop an ex
    9·1 answer
  • Many elements will try to obtain ____ electrons in their outermost energy level (which is very stable) because filling it in may
    14·1 answer
  • Help please I really need it. :(
    15·1 answer
  • If the half life of a radioactive isotope is 1 day, then how much of the original isotope remains at the end of two days?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!