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Anna [14]
3 years ago
15

For the covalent compound P2O5 , O5 is written as _______.

Chemistry
1 answer:
Anuta_ua [19.1K]3 years ago
8 0
The answer is Pentoxide
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According to the law of conservation of matter, atoms cannot be created or destroyed during a chemical reaction. what do you thi
Zarrin [17]

The word atom comes from the Greek atomos which means indivisible, indivisible (excepted in the nuclear reactions). It was therefore perfectly suited to the concept of atom when it was developed by chemists in the early nineteenth century, ie as the smallest part of a pure body.

So the atom of aluminum will remain unchanged, whatever the reaction it will undergo, it is only its molecular form that will change.

3 0
3 years ago
Calculate the pH of a solution with [OH−]=1.3×10−2M. (Hint: Begin by using Kw to find [H3O+].)
Nookie1986 [14]

Answer:

12.11.

Explanation:

∵ pOH = - log[OH⁻]

<em>∴ pOH</em> = - log(1.3 x 10⁻²) = <em>1.886.</em>

∵ pH + pOH = 14.

<em>∴ pH = 14 - pOH</em> = 14 - 1.886 = <em>12.11.</em>

3 0
3 years ago
What is the best way to determine if an aqueous solution of sodium nitrate is unsaturated
Marina86 [1]
Solution is said to be saturated, if it contains maximum amount of solute that it can hold.  On other hand, if solution contains less amount of solute as compared to its maximum capacity, it is referred as unsaturated solution.

It may be noted that, solubility of system is depends on temperature. 

Now, if solution is unsaturated then it will dissolve more solute, when added in it. Thus,  <span>sodium nitrate when added to solution get dissolves, it suggest that solution is unsaturated. </span>
6 0
3 years ago
Calculate AH°rxn from AH°7 values (use table in textbook appendix) a) Cl2 (g) + 2 Na (s) -› 2 NaCl (s) EITHER -411.1kJ/mol b) 2
MrMuchimi

To find AH°rxn, we use the following equation:

What we're going to do is to sum the enthalpy of the products and then substract with the enthalpy of the reactives:

As you can see, we need to multiply by the coefficients of the reaction.

Now, just replace the values of the table:

So the answer is -822.2kJ/mol.

For b:

Now, just replace the values of the table:

The answer for b is -1036kJ/mol.

4 0
1 year ago
Carbon, hydrogen, and oxygen are always found in what type of molecule?
Snowcat [4.5K]
Carbohydrates, proteins, lipids, and Nucleic Acids.

3 0
3 years ago
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