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solniwko [45]
4 years ago
7

Identify the oxidation number of phosphorus in the compound sodium phosphate.

Chemistry
1 answer:
Ivanshal [37]4 years ago
7 0
It is +5. There -8 charge due to four oxygen atoms and +3 due to one sodium atom and 2 hydrogen atom which makes it necessary for phosphorus to have +5 charge on it to make the compound electrically neutral. The charge on phosphorus corresponds to its oxidation number.
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BRAINLIEST IF EXPLANATION IS GIVEN AND ANSWER IS CORRECT:
Volgvan

Answer:

Q = 2997.69 J

Explanation:

Given that,

The mass of ice, m = 15.6 grams

The temperature increases from -8.76 degrees Celsius to 85.9 degrees Celsius.

The specifc heat of ice is 2.03 J/g°C

We need to find the amount of energy required. The formula for energy required is given by :

Q=mc\Delta T\\\\=15.6\times 2.03\times (85.9-(-8.76))\\\\=2997.69\ J

So, the required heat is equal to 2997.69 J.

7 0
3 years ago
Draw the products of the transformation shown by the fishhook notation. Include any electrons.
andrew11 [14]

Answer:

Explanation:

The question is based on the concept of the cleavage of bonds. In the process of the reaction the breaking of bonds is required. The cleavage of the bonds make the bonded electrons free to involve in the reaction process.

Fundamentals:

The cleavage of the bond can be done in two ways: homolytic or heterolytic. The heterolytic cleavage occurs when the shared electrons of the covalent bond are taken away by either of the atom. The heterolytic cleavage results in generation of the charged molecules. On the other hand, the homolytic cleavage is the cleavage in which the shared pair of the electrons are equally distributed, resulting in generation of free radicals.

4 0
3 years ago
A balloon of air now occupies 5.0 L, at 25 celcius and 1.00 atm. What temperature was it initially, if it occupied 4.0 L and was
xenn [34]

Answer: A. 219K

Explanation:

Using the Combined Gas Law; P1 V1/T1 = P2V2/T2

Where P1 = 0.92 atm, P2 = 1.00 atm

           V1 =4.0 L,   V2 = 5.0 L

           T1 =  ?,  T2 = 25 celcius = 298K

We therefore make T1 the subject of the formular;

T1 = P1 . V1 .T2 / P2. V2

    = 0.92atm x 4.0L x 298K / 1.00 atm x 5.0 L

    = 1096.64 /   5

    = 219.328 approx  219K

5 0
4 years ago
When a chemical changes from the solid phase to the gas phase, this is an example of What chemical property?
Margaret [11]

Answer:

sublimation

Explanation:

solid => liquid   Melting

liquid => solid   freezing

liquid => gas     evaporation

gas => liquid     condensation

solid => gas      sublimation

gas => solid      deposition (e.g.; formation of frost), however some scholars will also refer to this process as sublimation.

6 0
3 years ago
in the reaction C5H8 ____02--8H20, what coefficient should be placed in frount of 02 to balance the reaction?
Gekata [30.6K]
5CO2 should be in the blank spot.

the reaction would be 7
7 0
3 years ago
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