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Setler79 [48]
3 years ago
10

How do atomic mass and atomic number change across and dow the periodic table of elements?

Chemistry
1 answer:
finlep [7]3 years ago
7 0
They both are increasing when moving down to the group......
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B. HOPE THIS HELPED SENSI

Explanation:

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3 years ago
What will 3.20 moles of o2 occupy at stp
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4 0
4 years ago
We kept adding pbi2 into water until no more will dissolve. what is the concentration of lead (ii) iodide in the solution
blsea [12.9K]

PbI(ii) ionization in the solution of PBI(ii) into water is:

<span>PbI</span>₂(solution) <==> Pb₂⁺ + 2I⁻

If the conc. of PbI(ii) in the sol. is xM then the conc. of Lead(ii) will be x M and conc. of iodide will be 2 x M.

Therefore,

<span>Ksp=<span>[Pb</span></span>²⁺][I-]²

Plugging the values:

1.4×10⁻⁸ = x ⋅ (2x)²

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x³ = 0.35 x 10⁻⁸

or 

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Concentration of iodide ions in the solution:

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6 0
3 years ago
Bună ziua, mă poate ajuta și pe mine cineva, spunândumi din ce substanțe este formată cărămida și care este formula
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5 0
3 years ago
How many atoms of F are in the following formula: 3BaF2<br><br> 1) 6<br> 2) 3<br> 3) 2<br> 4) 5
Helen [10]

Answer:

There are 6 atoms

Explanation:

2 from the subscript and multiply it by 3 cause of the coefficient.

3 0
3 years ago
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