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Nina [5.8K]
3 years ago
14

Please help me with this question. Thank you.

Chemistry
2 answers:
DedPeter [7]3 years ago
6 0
36∨Kr^95 should be your answer.
krek1111 [17]3 years ago
3 0
In this nuclear reaction, a neutron is used to catalyze the decay of U-235. Four products were produced: Ba-139, two neutrons, and an unknown element X.

To calculate this, you must know that what you start with should be what you end with. The reaction occurred with 236 atomic mass units (U-235 and one neutron), so the final products should add up to 236.

Taking away Barium and the two neutrons:
236-141 = 95.
Now, we know that the element will have an overall mass of 95.

The number of protons should have stayed the same through the reaction as well, since the element didn’t undergo Beta or Positron decay. Starting with 92 protons (92 U), and subtracting the 56 contained in the Barium atom, the final number is 36 protons - the atomic number for Krypton.

Element X is Kr-95.
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In the Formula 3H2O what is the 3 called
vekshin1

Its very simple .

3H2O ---- three H two O

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What does Einstein’s theory of relativity expalain?
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The correct answer is D. How gravity interacts with planets

Explanation:

Einstein's theory of relativity formulated in 1915 introduces the following concepts:

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In the compound iodine heptafluoride: (hints: write out the molecular formula of this compound before answering the question. Al
Aloiza [94]

In the compound iodine heptafluoride: (hints: write out the molecular formula of this compound before answering the question. Also be sure you clearly understand the concepts of charge, oxidation numbers, how to determine charge and oxidation numbers, and - most important of all! - the similarities and the differences between charges and oxidation numbers)

<u>Each fluorine atom has a charge of 1</u>

<h3>What is iodine heptafluoride?</h3>

The interhalogen compound iodine heptafluoride, often known as iodine(VII) fluoride or iodine fluoride, has the chemical formula IF7.   As anticipated by VSEPR theory, it exhibits a unique pentagonal bipyramidal structure.  The molecule is capable of undergoing the Bartell process, a pseudorotational rearrangement that is similar to the Berry mechanism but for a heptacoordinated system.  It produces colorless crystals that melt at 4.5 °C and have a very narrow liquid range with a boiling point of 4.77 °C. The dense mist has an unpleasant, musty smell. The molecule is symmetrical with D5h. suggestion

To learn more about iodine heptafluoride from the given link:

brainly.com/question/28200374

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7 0
1 year ago
When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. the reason for this is?
Digiron [165]
<span>iron gets hotter before copper.</span>
7 0
3 years ago
What is the volume of 8.7 * 10 ^ 23 molecules of chlorine gas (Cl 2 ) ?
Mariana [72]

Answer:

32.3 dm³

Explanation:

Data given:

no. of molecules of Cl₂ = 8.7 x 10²³

Volume of chlorine gas (Cl₂) = ?

Solution:

First we have to find number of moles

For this formula used

    no. of moles = no. of molecules / Avogadros number

    no. of moles = 8.7 x 10²³ / 6.022 x 10²³

    no. of moles = 1.44 moles

Now we have to find volume of the gas

for this formula used

                      no. of moles = volume of gas / molar volume

molar volume = 22.4 dm³/mol

Put values in above equation

                 1.44 moles = volume of Cl₂ gas / 22.4 dm³/mol

rearrange the above equation

                 volume of Cl₂ gas = 1.44 moles x 22.4 dm³/mol

                volume of Cl₂ gas =  32.3 dm³

8 0
3 years ago
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