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vivado [14]
3 years ago
6

A Starting substance in a chemical reaction is called a _______________.

Chemistry
1 answer:
djverab [1.8K]3 years ago
5 0

Answer:

1.)REACTANT

  • These starting substances of a chemical reaction are called the <em>reactants</em>, and the new substances that result are called the products.
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If a cell extract is dissolved in a nonpolar solvent, the cell membrane which is mostly permeable to nonpolar molecules will dissolve most in the solvent.

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2 years ago
If 3.06 grams of ammonia (NH₃) react with 0.0350 moles of chromium (III) nitrate as noted by the following equation, what is the
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2 years ago
Terry heats two different masses of substance A to different temperatures, and measures the amounts of both carbon dioxide and w
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Answer:

This experiment is uncontrolled because two different masses of substance A are used.

Explanation:

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In the experiment highlighted above, different masses of a substance were used, they were heated to different temperatures. The set up does not show any correlation between the masses of substances heated and the temperatures. It is even difficult to try to predict the hypothesis for this kind of experimental set up. All the variables in play can best be assumed to be independent of one another.

5 0
3 years ago
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Ag2O(s) → 2Ag(s) + ½ O2(g) ΔH° = 31.05 kJ Which statements concerning the reaction above are true? (1) heat is released (2) heat
Sidana [21]

Answer:

D) 2, 4, and 5

Explanation:

In order to fully comprehend the answer choices we must take a close look at the value of ΔH° = 31.05. The enthalpy change of the reaction is positive. A positive value of enthalpy of reaction implies that heat was absorbed in the course of the reaction.

If heat is absorbed in a reaction, that reaction is endothermic.

Since ∆Hreaction= ∆H products -∆H reactants, a positive value of ∆Hreaction implies that ∆Hproducts >∆Hreactants, hence the answer choice above.

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The ocean

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bc its 99% explored:))

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