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vampirchik [111]
3 years ago
7

The periodic table is divided into different blocks. Elements that have complete valence electron shells are mostly found in the

...
s block.
d block.
p block.
f block.
Chemistry
2 answers:
inn [45]3 years ago
7 0
Elements with complete electron shells are most likely noble gases which have 8 valence electrons in their outer shell. So the letter farthest to the right should be the correct answer. Noble gases are found in group 18
wolverine [178]3 years ago
3 0

<em>Answer:</em>

  • P Block

<em>Explanation:</em>

  • The p block elements involve group III A, IV A, V A, VI A , VII A and VIII A. But among these groups, there are only Nobel gases that have complete valence shell electrons.
  • The Nobel gases have their complete valence shell electrons due to which they are least reactive and stable one. They are found in VIIIA group of the periodic table at right side.

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Ampere is the si unit of current
4 0
3 years ago
Calculate the total quantity of heat required to convert 25.0 g of liquid ccl4(l from 35.0°c to gaseous ccl4 at 76.8°c (the norm
GREYUIT [131]

The solution would be like this for this specific problem:

<span>25.0 g CCl4 x (1 mole CCl4 / 153.8 g CCl4) = 0.163 moles CCl4 

 </span>(29.82 kJ / mole)(0.163 moles) = 4.86 kJ 

total heat = 1.11 kJ + 4.86 kJ = 5.97 kJ 

<span>I hope this helps and if you have any further questions, please don’t hesitate to ask again. </span>

6 0
3 years ago
How would you balance the following equation NaOh + H2CO3=Na2CO3+H2O ?
mamaluj [8]

Answer: put 2 in front of NaOH and 2 also in front of H2O

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8 0
3 years ago
What mass of silver oxide, Ag2O is required to produce 25.0 g of silver sulfadiazine, AgC10H9N4SO2, from the reaction of silver
Wittaler [7]

Answer:

8.1107 g

Explanation:

The given reaction:

2C_{10}H_{10}N_4SO_2+Ag_2O\rightarrow 2AgC_{10}H_9N_4SO_2+H_2O

Given that:

Mass of silver sulfadiazine = 25.0 g

Molar mass of silver sulfadiazine = 357.14 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{25.0\ g}{357.14\ g/mol}

Moles= 0.07\ mol

From the reaction,

2 moles of silver sulfadiazine are formed from 1 mole of silver oxide

So,

1 mole of silver sulfadiazine are formed from 1/2 mole of silver oxide

0.07 mole of silver sulfadiazine are formed from 1/2*0.07 mole of silver oxide

Moles of silver oxide = 0.035 moles

Molar mass  of silver oxide = 231.735 g/mol

Mass = Moles * Molar mass = 0.035 moles * 231.735 g/mol = 8.1107 g

4 0
3 years ago
Чому вирівнювання хімічних рівнянь є обов´язковим
Sav [38]

what is your question?

plz ask in English language

3 0
3 years ago
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