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Gekata [30.6K]
3 years ago
14

Based on the diagram, which statement explains how energy is conserved during this chemical reaction? D B Potential energy of a

system - - 1 1 I с Reaction progress A. The potential energy changes indicated by C and B involve energy lost by the surroundings. B. The potential energy lost by the reaction system (B) is gained by the surroundings. C. The potential energy gained by the reaction system (A) is also gained by the surroundings. O D. The potential energy lost by the reaction system (C) is also lost by the surroundings.​

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
6 0
D hope this helps you
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When planning a simple experiment, what does it mean to “test one variable”?
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Answer:

I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."

Explanation:

I remember from last year but I'm not totally sure. Good luck!

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Consider the ions of potassium (K) and sulfur (S), Write chemical formulas for all possible ionic compounds involving these ions
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The compounds that could exists between the ions K^+ and S^2- are K2S and K2S2.

<h3>What is an ionic compound?</h3>

An ionic compound is a commpound that is composed of ions. Let us note that ionic compounds are always such that the sum of the charges on the ions is zero.

Hence, the compounds that could exists between the ions K^+ and S^2- are K2S and K2S2.

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2 years ago
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Another metal phosphate is iron phosphate. It will behave similar to calcium phosphate in an acid solution. What is the net ioni
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Question 6 A certain ionic compound has a solubility in water of at . Calculate the greatest mass of that could be dissolved in
emmainna [20.7K]

Complete Question:

A certain ionic compound X has a solubility in water of .765g/ml at 5 degrees C. Calculate the mass of X that's dissolved in 3 L of a saturated solution of X in the water at this temp. Be sure your answer has the correct unit symbol and significant digits.

Answer:

2.29 kg

Explanation:

A saturated solution is a solution that has the maximum amount of solute diluted at it, so if more solute is added, it will precipitate. The solutions can also be unsaturated (when more solute can be dissolved) or supersaturated (when there is more solute dissolved than the maximum. It's a very unstable solution).

The saturation is measured by the solubility, which indicates how much mass of the solute can be added to a certain volume of the solvent. So, the solubility (S) is the mass (m) divided by the volume (V).

For a solution with 3 L = 3000 mL,

S = m/V

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3 years ago
Which tool was most likely used in a procedure if the lab report shows that approximately 300 mL of water was used ?
Travka [436]

Graduated Cylinder is the answer to this.


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