2 years ago

Why do convection currents occur?

1 answer:

6 0

Answer:

Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.

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If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.45 J/g･°C) that can be heated from 22.5°C to

inysia [295]

Answer:

The correct answer will be "18.25 g".

Explanation:

The given values are:

Specific heat,

C = 0.45 J/g･°C

Heat involved,

q = 801 J

Temperature,

ΔT = 120.0°C-22.5°C

= 97.5°C

As we know,

⇒ $C = \frac{q}{m \Delta T}$

On substituting the given values, we get

⇒ $0.45=\frac{801}{m(97.5)}$

⇒ $m = 18.25 \ g$

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4 years ago

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Answer:

Explanation:

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3 years ago

The pH of a substance can only be determined when it is

NeTakaya

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B

8 0

3 years ago

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The density of osmium, which is the densest metal, is 22.57 g/cm^3. What is the mass of a block of osmium that measures 1.00 cm

olganol [36]

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the answer to your question is

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