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2 years ago

Describe the process of convection and how it contributes to seafloor spreading

Chemistry

2 answers:

kobusy [5.1K]2 years ago

8 0

Answer:

Seafloor spreading and other tectonic activity processes are the result of mantle convection. ... Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense.

qwelly [4]2 years ago

7 0

Answer:

Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.

Explanation:

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Which seismic wave refracts and cannot penetrate the core

svet-max [94.6K]

<span>Recordings of seismic waves from earthquakes led to the discovery of the earth's core and eventual maps of the layers of the Earth's inside. Just as the prism below refracts light at its faces, seismic waves bend, reflect and change speed at the boundaries between different materials below the Earth's surface.
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2 years ago

Read 2 more answers

If 100 ml of some pb(no3)2 solution is mixed with 100 ml of 6.50 x 10−2 m nacl solution, what is the maximum concentration of th

Alex73 [517]

Suppose X (in unit M) be the required maximum concentration of the Pb(NO₃)₂ solution added after mixing with 100 ml of 6.5 x 10⁻² M NaCl, the Pb²⁺ concentration is:
[Pb²⁺] = (X*100) / 200 = 0.5 X
The concentration of Cl⁻ is:
[Cl⁻] = (100 / 200) * (6.5 x 10⁻² M) = 0.0325 M
So:
Ksp = 2.00 x 10⁻⁵ = [Pb²⁺] [Cl⁻]² = (0.5X) * (0.0325)²
X = (2.00 x 10⁻⁵) / (5.28 x 10⁻⁴) = 0.038 M

7 0

3 years ago

The moon phase takes about a year to complete.....True or false?

larisa [96]

Answer:

the answer is false and the reason why is because every 29 days it completes one full cycle

Explanation:

4 0

3 years ago

what volume of N2 is required to convert 5.0L of hydrogen gas to ammonia? assume that all gases are at the same temperature and

____ [38]

Answer:

Approximately $1.7\; {\rm L}$ .

Explanation:

Nitrogen ${\rm N_{2}}\, (g)$ reacts with hydrogen ${\rm H_{2}}\, (g)$ at a $1:3$ ratio to produce ammonia ${\rm NH_3}\, (g)$ :

${\rm N_{2}}\, (g) + 3\; {\rm H_{2}}\, (g) \to 2\; {\rm NH_{3}}\, (g)$ .

The ratio between the coefficient of ${\rm N_{2}}\, (g)$ and the coefficient of ${\rm H_{2}}\, (g)$ is:

$\begin{aligned}\frac{n({\rm N_{2}})}{n({\rm H_{2}})} = \frac{1}{3}\end{aligned}$ .

Under the ideal gas assumptions, the same ratio would apply to the volume of ${\rm N_{2}}\, (g)$ and ${\rm H_{2}}\, (g)$ in this reaction:

$\begin{aligned}\frac{V({\rm N_{2}})}{V({\rm H_{2}})} = \frac{n({\rm N_{2}})}{n({\rm H_{2}})} = \frac{1}{3}\end{aligned}$ .

$\begin{aligned}V({\rm N_{2}})= \frac{1}{3}\, V({\rm H_{2}})\end{aligned}$ .

Given that $V({\rm H_{2}}) = 5.0\; {\rm L}$ :

$\begin{aligned}V({\rm N_{2}}) &= \frac{1}{3}\, V({\rm H_{2}}) \\ &= \frac{1}{3}\times 5.0\; {\rm L} \\ &\approx 1.7\; {\rm L}\end{aligned}$ .

(Rounded to $2$ significant figures.)

5 0

2 years ago

What are anti-oxidants? Why are they added to fat and oil containing food?

Lubov Fominskaja [6]

Answer:

A substance that protects cells from the damage caused by free radicals (unstable molecules made by the process of oxidation during normal metabolism). Free radicals may play a part in cancer, heart disease, stroke, and other diseases of aging.

8 0

3 years ago