Chemistry, 30.07.2019 22:30 reneecoutinho10

Which statement is correct regarding the rate of the reaction below? 3a + b yields 4x + 2y

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The rate of formation of X is 4 times the rate of disappearance of B

Explanation:
The given is:
3A + B .............> 4X + 2Y
From this, we can see that the ratio between the reactant B and the product X is 1 :4.
This means that for every reacting mole B, 4 moles of product X are formed, which means that the ratio between the disappearance of B and the formation of X is 1:4

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Which statement is correct regarding the rate of the reaction below? 3a + b yields 4x + 2y

Which statement is correct regarding the rate of the reaction below? 3a + b yields 4x + 2y

Answer from: Quest

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

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Which statement is correct regarding the rate of the reaction below? 3a + b yields 4x + 2y...