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zvonat [6]
3 years ago
13

If you add a chunk of zinc to a beaker of acid and zinc shavings to another beaker of acid, the sample with the zinc shavings wi

ll react faster. What property cause the increase in rate? 1) Catalyst 2) Nature of the reaction 3) Surface area 4) Temperature
Chemistry
1 answer:
Svet_ta [14]3 years ago
8 0

Answer:

The answer to your question is: letter C

Explanation:

The only difference between the samples of Zinc is their presentation, one is a chunk of zinc and the other one is shavings.

1) Catalyst                              This option is incorrect because the description

                                                do not mention anything about catalyst.    

2) Nature of the reaction      The nature of the reaction is the same.

3) Surface area                       This is the right answer because in the chunk

                                                 there is less surface area than in the shavings.

4) Temperature                       It is not mention anything about temperature in

                                                the description.

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Which of the following produces a physical change in the shape of an object?
bogdanovich [222]

Answer:Any change that occurs without altering the chemical composition of a substance is a physical change. Physical changes can include changing the color, shape, state of matter, or volume of a substance. It is crucial to remember that physical changes never alter the chemical makeup.

Explanation:

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8 0
3 years ago
Please help.
mojhsa [17]

Explanation: An element is represented in the form of _{A}^{Z}\textrm{X} where,

X = Symbol of the element

A = Atomic Mass of the element X

Z = Atomic Number of element X

Hence, For the element Justwondoricium,

Symbol = Jw

Atomic number = 120

Atomic Mass = 224

Now, Atomic number = Number of electrons = Number of Protons

Number of electrons = 120

Number of Protons = 120

and Atomic Mass = Number of neutrons + Number of protons

Number of neutrons can be calculated as we know atomic mass and number of neutrons, Putting the numbers we get

Number of neutrons = 224 - 120 = 104

The nearest noble gas to the element having atomic number 120 is Oganesson (Og), which has an atomic number of 118, so the next two electrons will be filled in the 8s orbital.

Electronic Configuration of Jw is [Og]8s^2

This electronic configuration lets us know about the location of the element in periodic table.

As the electron is entering the 8th shell, it belongs to the 8th period and as the last electron enters the s-orbital, it belongs to the S-block of the periodic table.

When the s-electrons are 1, it belongs to Group 1.

When the s-electrons are 2, it belongs to Group 2.

As this element has 2 s-electrons, it belongs to the Group 2.

8 0
3 years ago
Erika is asked to create a model showing a negatively charged Carbon ion. Which model should she create?
OverLord2011 [107]
I am pretty sure u have pictures and this one should be the one that erika should make

8 0
2 years ago
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cricket20 [7]
A. The gravitational force of the sun increased.
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3 0
3 years ago
13. Find the total number of atoms present in the following molecules. a. 5 H₂O b. Zn Cl₂
Phantasy [73]

Answer:

5H²O= 23

ZnCl²=135

have a great day

7 0
3 years ago
Read 2 more answers
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