It's a covalent compound because it's made of two nonmetals.
Answer:
1.4 g
Explanation:
Step 1: Write the balanced combustion reaction
CaC₂O₄ + 1/2 O₂ ⇒ CaO + 2 CO₂
Step 2: Calculate the moles corresponding to 3.2 g of CaC₂O₄
The molar mass of CaC₂O₄ is 128.10 g/mol.
3.2 g × 1 mol/128.10 g = 0.025 mol
Step 3: Calculate the moles of CaO formed from 0.025 moles of CaC₂O₄
The molar ratio of CaC₂O₄ to CaO is 1:1. The moles of CaO formed are 1/1 × 0.025 mol = 0.025 mol.
Step 4: Calculate the mass corresponding to 0.025 moles of CaO
The molar mass of CaO is 56.07 g/mol.
0.025 mol × 56.07 g/mol = 1.4 g
Answer:
Gas molecules move at random with no attractive forces between them.
Explanation:
Kinetic-molecular theory is based on the following postulates, or assumptions.
Gases are composed of a large number of particles that behave like hard, spherical objects in a state of constant, random motion.
These particles move in a straight line until they collide with another particle or the walls of the container.
These particles are much smaller than the distance between particles. Most of the volume of a gas is therefore empty space.
There is no force of attraction between gas particles or between the particles and the walls of the container.
Collisions between gas particles or collisions with the walls of the container are perfectly elastic. None of the energy of a gas particle is lost when it collides with another particle or with the walls of the container.
The average kinetic energy of a collection of gas particles depends on the temperature of the gas and nothing else.
Answer:
Building artificial reefs and limiting fishing activity
Explanation:
- Building artificial reefs and limiting fishing activity
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Introducing non-native species to fill unoccupied habitats and banning fishing
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Building artificial reefs and increasing fishing activity
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Eliminating non-native species and encouraging fishing for large predatory fish
The only activity that can successfully increase the natural biodiversity of fishes in the area would be <u>building artificial reefs and limiting fishing activities.</u>
<em>The building of artificial reefs would create several microhabitats for fishes to thrive while limiting fishing activities would ensure that the rate of thriving or multiplication of fishes far outweighs the rate fishes are being removed from the area. Both actions will work synergistically to increase the natural biodiversity of fishes in the area.</em>
The introduction of non-native species can have a negative consequence for the area as non-native species have a history of reducing biodiversity by outcompeting the native species and becoming invasive.
Building artificial reefs and increasing fishing activities would be counterproductive. While artificial reefs can increase the thriving of fishes, increasing fishing activities would take away the gains of the artificial reefs.
Eliminating non-native species and encouraging fishing for large predatory fish will disrupt the ecological balance of the area and might have negative effects on biodiversity.
Answer:
Sln
n=m/mr
n=25/100
n=0.25mole of Caco3
Malality =number of moles/volume (divided by number of moles both sides)
volume =Malality /number of moles
v=0.125/0.25
v=0.500L
I hope this help