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3 years ago

Find the Nazca plate and the South American plate. How are they different? Are they moving toward or away from each other?

1 answer:

7 0

<span>The Nazca plate is an oceanic plate, while the South American plate is continental. The fast moving Nazca plate is moving east towards the South American plate at a downward angle and converging. This process is called subduction, resulting in frequent earthquakes & production of the Andes Mountains.</span>

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Lead(II) nitrate is added slowly to a solution that is 0.0800 M in Cl− ions. Calculate the concentration of Pb2+ ions (in mol /

barxatty [35]

Answer:

$[Pb^{2+}]=3.9 \times 10^{-2}M$

this is the concentration required to initiate precipitation

Explanation:

$PbCl_2$ ⇄ $Pb^{2+}+2Cl^-$

Precipitation starts when ionic product is greater than solubility product.

Ip>Ksp

Precipitation starts only when solution is supersaturated because solution become supersaturated then it does not stay in this form and precipitation starts itself only solution become saturated.

This usually happens when two solutions containing separate sources of cation and anion are mixed together and here also we are mixing lead (||)nitrate solution(source of lead(||)) into the Cl- solution.

$Ip=[Pb^{2}][2Cl^-]^2=Ksp$

$Ksp=2.4\times 10^{-4}$

lets solubility=S

$[Pb^{2+}] = S$

$[Cl^-]=2S$

$Ksp=[Pb^{2+}]\times [Cl^-]^2$

$Ksp=S \times (2S)^2$

$Ksp=4S^3$

$S=\sqrt[3]{\frac{Ksp}{4} }$

$S=3.9\times 10^{-2}$

$[Pb^{2+}]=3.9 \times 10^{-2}M$ this is the concentration required to initiate precipitation

4 0

3 years ago

How many moles of nitroglycerin were in the container originally?

Gemiola [76]

Answer:

4.75

Explanation:

I hope this helped!

7 0

3 years ago

A monomer is added to the end of a polymer chain in a __________ reaction.

aalyn [17]

Dehydration reaction

6 0

3 years ago

Read 2 more answers

Which answer best describes the potential energy diagram for a reaction that takes place in water, if the temperature of the sur

blondinia [14]

D. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.

6 0

3 years ago

Read 2 more answers

Which scenario represents an unbalanced force?

ladessa [460]

A . A person Jumping represents an unbalanced force.

<u>Explanation:</u>

If equal amount of force applied on any object from both the directions, then the object will not move and so the force is a balanced force.

If an unequal amount of force on an object from both sides then the object will move in the opposite direction of the maximum force applied, so it is called as an unbalanced force.

When the force is unbalanced then its velocity will change, so options C and D are omitted.

In Option B the vase is sitting on a table, just kept so there is no action of any unbalanced force.

But a person jumping represents an unbalanced force, since the person do not jump with constant velocity and it will vary.

7 0

4 years ago