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Nataliya [291]
2 years ago
15

For the reaction H2O) =H% + OH", if x moles of H and y moles of OH are formed K. is y A. *?/(1 – x) C. 1/xy D. xy ​

Chemistry
1 answer:
hjlf2 years ago
5 0

Answer: Correct option is B)

The standard enthalpy change of formation of a compound is the enthalpy change which occurs when one mole of the compound is formed from its elements under standard conditions. The equation showing the standard enthalpy change of formation of water is

H
2
(g)+

2
1

​ O

2

​ (g)⟶H

2                                                                   ↑

​ O(l)                                           1 mole of water formed.

∴   Enthalpy of formation is −X2kJ/mol.

________________________________________________________

Explanation:I hope this helped

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Which of these are examples of passive transport? A. osmosis B.diffusion c. endocytosis d.8 mitosis​
AfilCa [17]

Answer:

Passive Transport

Explanation:

The three examples of passive transport are

Diffuison

Osmosis

facilated diffuison

So the answer can be A or B

4 0
2 years ago
What happens during covalent bonding? ​
Alika [10]

Answer:

The atoms share some of their outer electrons so that each atom has a stable noble gas arrangement.

Explanation:

7 0
3 years ago
Samples of each of the following objects are removed from a 60º C water bath, in which they have been for enough time to reach t
Brut [27]

Answer:

concrete

2kj for second question

Explanation:

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4 0
3 years ago
Two isotopes of hypothetical element X exist with abundances of 30.00% 100X and 70.00% 101X. What is the approximate atomic mass
Rasek [7]

Answer:

C. 100.7 amu

Explanation:

Isotopes of an element are atoms of an element with the same atomic number but different atomic masses. Each atomic mass of an isotope is known as an isotopic mass. An element that exhibits isotope, that is, that have two or more isotopes has a relative atomic mass that is not a whole number.

Relative atomic mass of X is the sum of the products of the relative abundances of each isotope and its isotopic mass.

For Isotope ¹⁰⁰X: 30% × 100 = 30 amu

For Isotope ¹⁰¹X: 70% × 101 = 70.7 amu

Relative atomic mass of X = (30 + 70.7) amu = 100.7 amu

Therefore, the approximate atomic mass of X is 100.7 amu

4 0
2 years ago
Floor 19 is an isotope of fluorine It has different number of?—————
vitfil [10]
Try B, but i don’t know
5 0
3 years ago
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