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2 years ago

Which element has a higher ionization energy than silicon? Magnesium, Germanium, Sodium, or Phosphorus

Chemistry

1 answer:

Fiesta28 [93]2 years ago

7 0

Answer:

Phosphorus

Explanation:

Phosphorus will have higher ionization energy than silicon from the given choices.

Ionization energy is the energy required to remove the most loosely held electron in an atom.

Based on the periodic trends:

Across the period, ionization energy increases from left to right
Down a group, ionization energy decreases.

Since phosphorus is the element in the right most part after silicon, it has higher ionization energy

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What volume of 1.5M NaOH is needed to provide 0.75 mol of NaOH?

lutik1710 [3]

1.5M NaOH so we've 1.5 moles of NaOH in 1L of solution

1L = 1000 ml

1.5 moles of NaOH ------------in------------- 1000 ml
0.75 moles of NaOH ----------in---------------x ml
x = 500 ml

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3 years ago

Organize the following species in terms

ser-zykov [4K]

Explanation:

F Cl Br

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so Br<Cl<F

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3 years ago

4. An 82 kg hiker climbs Mt. Humphrey near Flagstaff. During a two hour period, the hiker's

bazaltina [42]

Answer:

$\Delta E = 434253.96\,J$ , $\Delta P = 60.313\,W$

Explanation:

The change in energy is given by the change in gravitational potential energy:

$\Delta E = m\cdot g \cdot \Delta h$

$\Delta E = (82\,kg)\cdot (9.807\,\frac{m}{s^{2}} )\cdot (540\,m)$

$\Delta E = 434253.96\,J$

The average rate of change in terms of time is approximately this:

$\Delta P = \frac{\Delta E}{\Delta t}$

$\Delta P = \frac{434253.96\,J}{(2\,h)\cdot (\frac{3600\,s}{1\,h} )}$

$\Delta P = 60.313\,W$

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Answer:

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