Which process is occurring at the center of all active stars? A) fusion B) fission C) flatulation D) hydrogen decay

1 answer:

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The answer is A) fusion. Occurring at the center of all active stars including our sun, this nuclear reaction of combining two hydrogen atoms, and using an enormous amount of heat, forms a single more massive helium atom. This fusion of hydrogen atoms also produces the energy of the stars and creates the helium gases existing in the universe.

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When substances react chemically to create a new substance, will that new substance have the same physical and chemical properti

skad [1K]

Answer:

No it will not have the same chemical properties as the initial substance.

Explanation:

In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants

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3 years ago

In part A, when you added water to the sodium acetate in the flask, some of the chemical dissolved into the water. Would you cal

viktelen [127]

Answer: The solution is a SATURATED solution.

Explanation:

Although most substances are soluble in water, some are more soluble than others,that is , their solubilities differ. SOLUBILITY is a means of comparing the extent to which different solutes can dissolve in a particular solvent at a definite temperature.

From the question above, when water was added to the sodium acetate in the flask, SOME of the chemical dissolved into the water, meaning that some remained undissolved. This is because a given volume of water can only dissolve a certain amount of chemical in it at room temperature. If more chemical is added to such a solution, the chemical will remain undissolved. Such a chemical solution is said to be a SATURATED SOLUTION.

A saturated solution of a solute at a particular temperature is on which contains as much solute as it can dissolve at that temperature in the presence of undissolved solute particles.

Unsaturated solution is a type of solution that dissolves all its solutes with no presence of undissolved solute.

Supersaturated solution is one which contains more of the solute than it can normally hold at that temperature. It is an unstable solution which crystallizes out when disturbed.

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3 years ago

Read 2 more answers

Give the name (not formula) of the hydrocarbon

nordsb [41]

hydrocarbon is ethene which is used to test for saturation and it undergoes addition reaction

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3 years ago

BaCl2(aq) + Na2CO3(aq) BaCO3(s) + NaCl(aq

Vitek1552 [10]

This is the equation balanced:

<span>BaCl2(aq) + Na2CO3(aq) = BaCO3(s) + 2 NaCl(aq)

Then the coefficient in front of Na Cl is 2.

Answer: 2
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