What is the melting point of wrought iron in degrees celcius?

Answers

Answer 1

Answer: The melting point of iron is 2,800°F or 1,538°C.

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Heat energy is always released during what type of process?

Answers

In the exothermic process.. Have a great day!

Habitat ____________ splits ecosystems into pieces and makes populations more vulnerable to disturbances or climate change.A) diversification
B) extinction
C) fragmentation
D) unification

Answers

The correct answer is (C) fragmentation.

Habitat fragmentation is discontinuities in a organism's preferred ecosystem, causing disturbance in a population and ecosystem decay. Cause of fragmentation is geological processes and human activities like deforestation. Habitat loss, which occur through the process of habitat fragmentation, is considered a greatest to species and biodiversity.

fragmentation that is the answer

A student adds 0.40g of sodium hydroxide to a clean, dry 250 mL beaker and leaves the beaker and leaves the beaker on the lab table. The mass of the empty beaker is 112.58g. After 24 hours, the student observes that the beaker contains a dry, solid white residue. The total mass of the beaker and its contents is 113.09g. Following are three possible chemical reactions that could have occured: Sodium Hydroxide (solid) + Carbon Dioxide (gas) rightarrow Sodium Bicarbonate (solid) Sodium Hydroxide (solid) + Carbon Dioxide (gas) rightarrow Sodium Carbonate (solid) + Water (gas) Sodium Oxide (solid) rightarrow Sodium Oxide (solid) + Water (gas) Use your knowledge of stoichiometry to determine which chemical reaction occurred. Show your work, and explain your reasoning whenever needed.

Answers

2 NaOH (s) + CO₂ (g) → Na₂CO₃ (s) + H₂O (l)

Explanation:

The most probably chemical reaction is:

2 NaOH (s) + CO₂ (g) → Na₂CO₃ (s) + H₂O (l)

Sodium Hydroxide (solid) + Carbon Dioxide (gas) → Sodium Carbonate (solid) + Water (gas)

In this reaction the water you obtain have to be in liquid form because the reaction takes place at room temperature. However because the student left the beaker for 24 hours, the water have a plenty of time to evaporate, so in the end only sodium carbonate (Na₂CO₃) remained in the beaker.

number of moles = mass / molar weight

number of moles of NaOH = 0.4 / 40 = 0.01 moles

Taking in account the chemical reaction, we devise the following reasoning:

if 2 moles of NaOH produce 1 mole of Na₂CO₃

then 0.01 moles of NaOH produce X mole of Na₂CO₃

X = (0.01 × 1) / 2 = 0.005 moles of Na₂CO₃

mass = number of moles × molar weight

mass of Na₂CO₃ = 0.005 × 106 = 0.53 g

mass of Na₂CO₃ = mass of beaker and its contents after 24h - mass of empty beaker

mass of Na₂CO₃ = 113.09 - 112.58 = 0.51 g which is close the theoretical value of 0.53 g.

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number of moles

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Creates clouds, snow, sleet, rain and hail

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water
hope this helps!!!

Answer:

Water Cycle

Explanation:

Edge 2021

A girl throws a rock into a pond. A leaf floating on the pond bobs up and down but does not change location on the pond's surface. Why not?

Answers

This is due to the difference in density. The rock is denser than the leaf. And also, the rock is denser than the liquid in the pond. If the material is denser than the other material, it will sink. The same holds true for the rock, it sinks. But when the material is less dense than the other material, it floats. And it holds true for the leaf, it floats.

What energy conversion occurs when a battery powered car rolls across the floor?Stored chemical energy is converted to mechanical energy.

Stored electrical energy is converted to mechanical energy.

Stored mechanical energy is converted to mechanical energy.

Stored nuclear energy is converted to electrical energy.

Answers

Stored chemical energy is converted to mechanical energy.

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Which statement best compares coastal ecosystems to open ocean ecosystems?Coastal ecosystems include abyssopelagic depths, and open ocean ecosystems do not. Coastal ecosystems have less sunlight, fewer nutrients, and less diversity than open ocean ecosystems. Coastal ecosystems have a greater range of water pressures than open ocean ecosystems. Coastal ecosystems have more sunlight, more nutrients, and higher levels of productivity than open ocean ecosystems