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4 years ago

Different rocks have______ melting points

Chemistry

1 answer:

weeeeeb [17]4 years ago

5 0

Answer:

Different rocks have high, medium, and low melting points.

Explanation:

There is a considerable range of melting temperatures for different compositions of magma. All the silicates are molten at about 1200°C (when a part of rock) and all are solid when cooled to about 600°C. Often the silicates are grouped as high, medium and low-melting point solids.

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Hydrogen gas and aqueous zinc chloride are produced by the reaction of aqueous hydrochloric acid and solid zinc . Write a balanc

Ymorist [56]

1. Write out all the ions/elements and indicate whether they are reactants or products.

Reactants:

Aqueous Hydrochloric Acid: HCl (H has a charge of +1 and Cl has a charge of 1-, so when an ionic bond forms they will form HCl).

Solid Zinc: Zn (since it is a solid zinc with no other forms of elements, the zinc is pure).

Products:

Hydrogen gas: H2 (it has to be H2 because Hydrogen is a diatomic element, and when by itself during reactions, will be H2 instead of H).

Aqueous Zinc Chloride: ZnCl2 (Zn has a charge of 2+ and Cl has a charge of 1-, so through an ionic bond, they will form ZnCl2).

2. Using this information, you can then write out the unbalanced equation.

HCl + Zn -> H2 + ZnCl2

3. Next, indicate their states of matter and any aqueous solutions.

HCl (aq) + Zn (s) -> H2 (g) + ZnCl2 (aq)

4. Try different numbers until you get the same numbers of H, Cl, and Zn on both sides.

2 HCl (aq) + Zn (s) -> H2 (g) + ZnCl2 (aq)

As you can see, the equation contains 2 Hydrogen atoms on both sides, 2 Chloride atoms on both sides, and 1 Zinc atom on both sides. The equation is chemically balanced.

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4 years ago

A cheetah is an organism that observes chase and catches its pery what kind of energy is that A mechanicle kenetic to chemical t

Temka [501]

Answer:

C mechanical potential to chemical to mechanical kinetic

Explanation:

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To chase after its prey or to pounce on it, the cheetah would require energy. This is obtained by its body by performing certain chemical activities that generate energy that help it to move.

When the cheetah finally undergoes this, it has enough energy to finally come out of hiding and chase its prey. This is kinetic energy as while doing so, the cheetah is in motion.

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Answer:

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dsp73

Answer:

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3 years ago

Different rocks have______ melting points​

Different rocks have______ melting points