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Pavel [41]
3 years ago
15

1)How can scientists use a seismograph to determine the density and depth of Earth's layers?

Chemistry
1 answer:
Masteriza [31]3 years ago
3 0
Hello Olivia!!! 

<span>Q.) Describe at least two geological events that can occur at a divergent boundary.
</span>
A.)Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill.

Hope this can help!!! 
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How many liters of CH, gas are in 5.40 moles of CH, gas at STP?<br> (3 sig figs)
charle [14.2K]

Answer:

Try this link https://chem.libretexts.org/Courses/Mount_Aloysius_College/CHEM_100%3A_General_Chemistry_(O'Connor)/08%3A_Solids_Liquids_and_Gases/8.E%3A_Solids_Liquids_and_Gases_(Exercises)

5 0
3 years ago
3. What is the mass % of a solution that contains 36g KCl in 475g of water?
stira [4]

Answer:

%KCl = 7.05%

%Water = 92.95%

Explanation:

Step 1: Given data

  • Mass of KCl (solute): 36 g
  • Mass of water (solvent): 475 g

Step 2: Calculate the mass of the solution

The mass of the solution is equal to the sum of the masses of the solute and the solvent.

m = 36 g + 475 g = 511 g

Step 3: Calculate the mass percentage of the solution

We will use the following expression.

%Component = mComponent/mSolution × 100%

%KCl = 36 g/511 g × 100% = 7.05%

%Water = 475 g/511 g × 100% = 92.95%

7 0
3 years ago
Non examples of chemical change<br> List some please
Ivan

Answer:

Crushing a can.

Melting an ice cube.

Boiling water.

Mixing sand and water.

Breaking a glass.

Dissolving sugar and water.

Shredding paper.

Chopping wood.

3 0
3 years ago
How much energy is released when 20.0 g of water is cooled from 50°C to 30°C (Cwater= 4.18 J/ g*°C)
marissa [1.9K]

Answer:

1672 J

Explanation:

We are supposed to find out the energy released by water when cooled from 50° C to  30°C .

We have the relation that ,

H=msΔT

Information is given that s=4.18 J/ g*°C ,

m=20.0 g,

and ΔT is -20° C.

Hence by substituting we get,

H=-20*20*4.18

(minus symbol represents that energy is being released)

1672 J is release when water is cooled from 50° C to  30°C .

7 0
3 years ago
Grams of Cl in 38g of C2F3Cl3
Crank

Answer:

38.0 g C2F3Cl3) / (187.3756 g C2F3Cl3/mol) x (3 mol Cl / 1 mol C2F3Cl3) x (35.4532 g Cl/mol) =

21.6 g Cl in C2F3Cl3

4 0
3 years ago
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