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Lisa [10]
3 years ago
14

At STP, which 2.0-gram sample of matter uniformly fills a 340-milliliter closed container?

Chemistry
1 answer:
Xelga [282]3 years ago
6 0

Answer;

D, Xe (g)

Solution and explanation;

If 2g has a volume of 340ml.

Density is 1000/340*2 = 5.88g/litre.

-This rules out the two solids, choices 2) &3)

If 1 litre has mass 5.88g,

then 22.4 liters (volume at STP) has mass 5.88*22.4 = 131.8g/mol

molar mass Br2 = 80*2 = 160g/mol NO

molar mass Xe = 131.3g/mol = YES.

Answer is Xe

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TEA [102]
All 3 increase going right to left and top to bottom on the periodic table <span />
5 0
3 years ago
What is the hydroxide ion concentration of a solution that has a pH of 8.57?
Inessa [10]
Calculate the pOH first :

pOH =14-8.57=5.43

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4 0
4 years ago
1. There is no formation of volcanoes in the convergence between
tester [92]

A volcano is caused by a rupture in the crust from which molten magma

escapes

The correct options are;

  1. B. Two continental plates
  2. C. Volcanoes
  3. C. A tsunami in the ocean
  4. C. The temperature in the mantle is higher than in the crust
  5. A. Volcanic island arcs
  6. A. Earthquake
  7. B. Trench
  8. C. Subduction
  9. A. Fault
  10. C Tsunami
  11. A. Convergent plate boundary
  12. See attached drawing (<em>Based on Department of Education Science Module)</em>
  13. D. a, b and c
  14. C. Converging oceanic plates
  15. It is where the oceanic plates subduct under the continental plate

Reasons:

1. Due to the equal densities and buoyancy of the plates, there is no

subduction and the plates rise to form mountain ranges and no volcanoes.

2. The subduction causes the plates to form magma and then volcanoes.

3. Shallow earthquakes that have their epicenter at the fault line in the

ocean generate a tsunami.

4. The mantle lay under each plate and therefore, the high temperatures

of the mantle does not support the fact.

5. Volcanic arcs are formed in the convergence of two oceanic or oceanic

and continental plates.

6. When two continental plates converge, shallow earthquakes occur.

7. A crack called a trench is formed by the interaction of an oceanic crust

and another crust.

8. A subduction occurs when oceanic plates converge.

9. A fault is produced by horizontal plate movement.

10. A Flip or kick upwards of water is known as a tsunami.

11. Subduction occurs during convergence of two plates such that a

subducted plate goes down beneath an overriding plate.

12. The illustration of seafloor spreading consists of two plates moving

away from each other.

<em>Question 12: Based on Department of Education Science Module</em>.

<em />

13. Earthquake occur at places where the plates are moving (including

subducting).

14. Volcanic island arcs are formed by two oceanic plates.

15. At the location where the continents meet the seas, oceanic plates are

subducted under the continental plate, melted to magma in the mantle

from which volcano is formed.

Learn more about volcanoes here:

brainly.com/question/19424796

5 0
3 years ago
How many moles are there in 3.04 X 10^23 molecules of hydrogen, H2, gas?
Kobotan [32]

Answer:

1 mole=6.023×10^23 molecules

3.04×10^23 molecules× value of 1 mole

Explanation:

need thanks and make me brainiest if it helps you

5 0
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Which of the following is a combustion reaction ? ( please answer asap !! ) &lt;3
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