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Solnce55 [7]
2 years ago
5

Name the element of standard mass.

Chemistry
1 answer:
ser-zykov [4K]2 years ago
4 0

Apple orange triangle pizza pie 9663862gsg



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Exposure of silver Chloride to sunlight for a long<br>duration turns grey due to​
Tema [17]

Answer:

Exposure of silver chloride to sunlight for a long duration turns grey due to​ photolytic decomposition i.e decomposition in the presence of sunlight.

Explanation:

When silver chloride, AgCl is exposed to sunlight for a long time, it will undergo decomposition as the sunlight provides sufficient energy needed to decomposed the salt, AgCl to metallic silver and chlorine gas. This can be seen in the equation below:

2AgCl —> 2Ag + Cl2

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28Which is true?
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28) All elements are made of atoms

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18 oxygen atoms

Explanation:

in order to from the 6 molecules carbon dioxide and 6 molecules of water you will have a total of 18 oxygen atoms

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Consider the balanced reaction
Scorpion4ik [409]

Answer:

561 g P₂O₃

Explanation:

To find the mass of P₂O₃, you need to (1) convert moles H₃PO₃ to moles P₂O₃ (via mole-to-mole ratio from equation coefficients) and then (2) convert moles P₂O₃ to grams P₂O₃ (via molar mass). It is important to arrange the ratios/conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the amount of sig figs in the given value.

Atomic Mass (P): 30.974 g/mol

Atomic Mass (O): 15.998 g/mol

Molar Mass (P₂O₃): 2(30.974 g/mol) + 3(15.998 g/mol)

Molar Mass (P₂O₃): 109.942 g/mol

1 P₂O₃ + 3 H₂O -----> 2 H₃PO₃

10.2 moles H₃PO₃            1 mole P₂O₃              109.942 g
----------------------------  x  --------------------------  x  -------------------  =  561 g P₂O₃
                                        2 moles H₃PO₃              1 mole

6 0
1 year ago
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