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
My name is Ann [436]
3 years ago
9

What is the most well known supercontinent?

Chemistry
2 answers:
Oxana [17]3 years ago
8 0

Answer:

Pangea

Explanation:

KIM [24]3 years ago
5 0

Answer:

Pangaea

FILLER FILLER FILLER

You might be interested in
Equal moles of H2, N2, O2, and He are placed into separate containers at the same temperature. Assuming each gas behaves ideally
lbvjy [14]

Answer:

They would all exhibit the same pressure.

Explanation:

Since the same number of mole of each gas is placed in different containers, it means the gas will occupy the same volume.

Now, the gases were observed at the same temperature. This means they will all have the same pressure as their volume is the same.

Now we can further understand this by doing a simple calculation as follow:

Assumptions:

For H2:

Number of mole (n) = 1 mole

Volume (V) = 22.4L

Temperature (T) = 298K

Gas constant (R) = 0.0821 atm.L/Kmol

Pressure =..?

PV = nRT

Divide both side V

P = nRT /V

P = 1 x 0.0821 x 298 / 22.4

P = 1 atm

Therefore, H2 has a pressure of 1 atm.

For N2:

Number of mole (n) = 1 mole

Volume (V) = 22.4L

Temperature (T) = 298K

Gas constant (R) = 0.0821 atm.L/Kmol

Pressure =..?

PV = nRT

Divide both side V

P = nRT /V

P = 1 x 0.0821 x 298 / 22.4

P = 1 atm

Therefore, N2 has a pressure of 1 atm

For O2:

Number of mole (n) = 1 mole

Volume (V) = 22.4L

Temperature (T) = 298K

Gas constant (R) = 0.0821 atm.L/Kmol

Pressure =..?

PV = nRT

Divide both side V

P = nRT /V

P = 1 x 0.0821 x 298 / 22.4

P = 1 atm

Therefore, O2 has a pressure of 1 atm

For He:

Number of mole (n) = 1 mole

Volume (V) = 22.4L

Temperature (T) = 298K

Gas constant (R) = 0.0821 atm.L/Kmol

Pressure =..?

PV = nRT

Divide both side V

P = nRT /V

P = 1 x 0.0821 x 298 / 22.4

P = 1 atm

Therefore, He has a pressure of 1 atm.

From the above illustrations we can see that the gases have the same pressure since they have the same number of mole, volume and were observed at the same temperature.

4 0
4 years ago
The dopamine molecule has an intermediate hydrophobicity. Edit the dopamine molecule so that it is more hydrophobic.
yulyashka [42]
You should edit the dopamine molecule by tampering with its polar groups. Polar groups affect chemical's physical properties including hydrophobicity.
5 0
4 years ago
How many moles of ammonium ions are in 6.985 g of ammonium carbonate?
Mila [183]
 <span>(NH4)2CO3 -> 96.09 g/mol 

(6.995g ammonium carbonate)(1mol ammonium carbonate/ 96.09 g ammonium carbonate) = 0.072796 mol ammonium carbonate 

In this conversion, the 'grams' unit is crossed out because it is in both the numerator and the denominator, which leaves the 'mol' unit left. 

Looking at the formula (NH4)2CO3, you can look at it as if it were: 
2 mol (NH4) + 1 mol (CO3) = 1 mol (NH4)2CO3 

For every 1 mol of ammonium carbonate, you have 1 mol of carbonate ions and 2 moles of ammonium ions. 

(0.072796 mol ammonium carbonate) = (0.072796 mol carbonate ion)+(0.363981 mol ammonium ion) </span>
5 0
3 years ago
Write an equation for the reaction of hydrogen chloride and sodium sulfide to produce hydrogen sulfide with sodium chloride.
Angelina_Jolie [31]

Answer:

sodium sulfite) Na2SO3 + HCl (hydrochloric acid).  This reaction is a gas evolution reaction.  The products are sodium chloride (NaCl), sulfur dioxide (SO2) and water (H2O).  Sulfurous Acid (H2SO3) is produced as an intermediate in this reaction.

Explanation:

3 0
3 years ago
How many joules are contained in a snack cake that is labeled "230 Calories"?
Alinara [238K]

Answer:

9.62 × 10² J

Explanation:

In this problem, we need to convert 230 calories to joules. For this, we must know the conversion from calories to joules.

1 Calorie = 4.184 Joules

To find Joules in 230 calories, multiply 4.184 by 23. So,

230 Calorie = (230 × 4.184) Joules

= 962.32 Joules

or

230 Calories = 9.62 × 10² J

So, the correct option is (A).

6 0
4 years ago
Other questions:
  • If a solid line represents a covalent bond and a dotted line represents intermolecular attraction, which of these choices shows
    9·1 answer
  • What is a precipitate?
    14·2 answers
  • What would happen if Phosphorus disappeared?
    10·1 answer
  • Calculate the theoretical value for the number of moles of CO2 that should have been produced in each balloon assuming that 1.45
    10·1 answer
  • Sulfur has 4 isotopes listed below. Using a periodic table, which isotope is most likely to be the most common isotope? A) sulfu
    10·1 answer
  • Balance this equation C6H14(g) + O2(g) → H2O(g) + CO2(g)
    7·1 answer
  • The heat of combustion of ethane is -337.0kcal at 25 degrees celsius. what is the heat of the reaction when 3g of ethane is burn
    15·1 answer
  • WILL MARK BRAINLIEST IF YOU ANSWER WITHIN 5 MINUTES
    11·2 answers
  • Which equation shows the correct relationship between mass, force, and acceleration?
    7·1 answer
  • When hydrochloric acid is poured on limestone, the mixture fizzes, releasing a colorless, odorless gas. The equation for this ch
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!