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kirza4 [7]
3 years ago
15

Is there a polyatomic ion in calcium phosphide ?

Chemistry
1 answer:
qaws [65]3 years ago
7 0

Answer:

Polyatomic ions are a set of covalently bonded atoms that have an overall charge, making them an ion. ... For example, calcium hydroxide has the formula Ca(OH)2 because hydroxide has -1 charge and calcium has a 2+ charge. Two hydroxides were needed to balance off the +2 charge of calcium.

Explanation:

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If you are given the standard potential for the reduction of X^2+ is +0.51 V, and the standard potential for the reduction of A^2+ is -0.33, just add the two. The standard potential for an electrochemical cell with the cell is 0.18V

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3 years ago
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An element X combines with oxygen to form a compound of formula XO2. If 24.0 grams of element X combines with exactly 16.0 grams
tensa zangetsu [6.8K]

Answer:

atomic mass of X is 48.0 amu

Explanation:

Let y be the atomic mass of X

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According to the equation ,

y g of X reacts with 32 g of O_2

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But given that 24.0 g of X exactly reacts with 16.0 g of O_2

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3 years ago
What is the pH of a 4.08*10-'M solution of H30+?
Mariana [72]

Answer:

8.4

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Two solid blocks are HEATED to the temperatures show. The blocks are placed so they touch. Which diagram shows the DIRECTION HEA
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number 4

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