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Veronika [31]
4 years ago
8

How can two atoms of the same chemical element be different?

Chemistry
1 answer:
suter [353]4 years ago
8 0

The answer is B as isotopes are different versions of the same chemical element containing the same amount of protons and electrons but different amounts of neutrons.

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Which information about a chemical reaction is provided by a potential energy diagram?
antiseptic1488 [7]
An energy profile of a reaction tells you whether it's endothermic or exothermic, the energy of the products and reactants, the activation energy needed for the forward (Ea) and reverse (Ea') reactions, the change in energy (∆E), and the energy of the activated complex.
3 0
3 years ago
Why in a rollercoaster when the cart is going up it decreases the speed of the cart but when it's going down it increases?
alukav5142 [94]
Because gravity is trying to pull it down not up and when it's going down it's going with gravity not against it.
8 0
3 years ago
Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of ni2+ i
juin [17]

Answer is <span>
      Ni²</span>⁺(aq) + 6NH₃(aq) ⇌ [Ni(NH₃)₆]²⁺<span>

</span>

<span>When the concentration of Ni²⁺</span><span>(aq) increases, according to the Le Chatelier’s principle system tries to become equilibrium by reducing the increased factor. To do that, the concentration of Ni²⁺</span><span>(aq) should be reduced. Hence, the forward reacted should be promoted to reduce the Ni²⁺</span><span>(aq) concentration</span>.
8 0
3 years ago
At the equivalence point for a weak acid-strong base titration an equal number of moles of OH- and H+ have reacted, producing a
aev [14]

Answer: The basicity of the salt anion

Explanation:

All the weak acid is neutralized at the equivalence point and transferred to its conjugate base (number of moles of H+ = increased number of moles of OH–). Therefore the solution produced is weakly alkaline and the pH of the equivalence point will be greater than 7.

6 0
3 years ago
Which among the following statements is FALSE? Group of answer choices None of the above A liquid has a definite volume; but it
Vesna [10]

Answer: None of the above statements is false.

Explanation:

In a solid substance, particles are closely held together due to which a solid substance has definite shape and volume. Therefore, solids are also incompressible in nature.

In liquids, the molecules are slightly away from each other due to which they can slide past each other. Hence, liquids do not have a fixed shape but they have a definite volume. Liquids are also incompressible in nature.

In gases, the particles are held by Vander waal forces due to which they move rapidly from one place to another. Hence, gases are highly compressible in nature.

Thus, we can conclude that none of the given statements are false.

4 0
3 years ago
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