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tester [92]
3 years ago
15

Metallic properties tend to increase in which direction on the periodic table

Chemistry
1 answer:
tresset_1 [31]3 years ago
3 0
Metallic properties head to the left.
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How many moles of K+ and PO4^3- ions are present in 20.0 mL of a 0.015 M solution of potassium phosphate?
Romashka-Z-Leto [24]

Answer:

n_{K^+}=0.0009molK^+

Explanation:

Hello,

In this case, the first step is to compute the number of moles of potassium phosphate in 20.0 mL (0.020L) of the 0.015-M (mol/L) solution as shown below:

n=0.020L*0.015\frac{mol}{L}=0.0003mol

Thus, these moles correspond to potassium phosphate moles, which molecular formula is K₃PO₄, therefore, one mole of this compound contains three moles of potassium ions as it has three as its subscript in the formula. Thereby, the moles of potassium ions result in:

n_{K^+}=0.0003molK_3PO_4*\frac{3molK^+}{1molK_3PO_4} \\\\n_{K^+}=0.0009molK^+

Best regards.

7 0
4 years ago
The periodic Table Properties
Talja [164]

Answer:

Periodic Properties of the Elements

Atomic Radius.

Ionization Energy (ionization potential)

Electron Affinity.

Electronegativity.

Metallic Character.

Other Trends.

Redox Potentials. Oxidation Potential. Reduction Potential.

Uses in knowing the Periodic Properties of Elements

Explanation:

8 0
3 years ago
The number of dots around an element symbol in a Lewis dot structure equals the total number of electrons in an atom of that ele
strojnjashka [21]
The number of dots represents the amount of valence electrons, which is the same as the last digit of the elements group number in ptof.
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Why does the rock cycle take so long
deff fn [24]

Answer:

It seems to be that ROCKS are absolutely a "HARD SOLID", this is because many hard solids take SO LONG to decompose, but to answer your question, It takes so long because rocks a compressed solids...

Explanation:

This answer came straight from my brain... hope it was helpful!

**Remember to Mark your best answer!  :-)

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Hotter less dense then colder air as a result cold air sinks and hot air rises

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3 years ago
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