Chemistry, 28.07.2019 07:00 mrwiggles675

Which sample contains the greatest number of moles of cl? which sample contains the greatest number of moles of ? 3.8 mol hcl 4.2 mol naclo3 1.7 mol ch2cl2 2.2 mol mg(clo4)2?

Answers: 1

Show answers

Answers

The sample with greatest number of moles of Cl is calculated as follows

calculate the number of moles of Cl in each sample by multipying mole with number of chlorine molecule

Hcl= 3.8 moles x 1 = 3.8 moles

NaCIO3 = 4.2 moles x 1 = 4.2 moles

CH2Cl2= 1.7 moles x2 = 3.4 moles

Mg (ClO4)2 =2.2 moles x 2 = 4.4 moles

Mg(Cl)4)2 sample is the one with greatest number of Cl moles

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.

Answer from: Quest

The dispersed phase is liquid and dispersed medium in milk is liquid

Another question on Chemistry

Chemistry, 22.06.2019 10:50

Someone offer some answers to this, i will give 98 coins and mark as brainliest! i will put the rest of the lab down in the comments,solutions pre-lab questions: in this lab, you will make fruit drinks with powdered drink mix. complete the pre-lab questions to get the values you need for your drink solutions. calculate the molar mass of powered fruit drink mix, made from sucrose (c12h22o11).using stoichiometry, determine the mass of powdered drink mix needed to make a 1.0 m solution of 100 ml. (hint: use molarity = to find the moles of drink mix, then convert moles to grams using a mole conversion.)what mass of powdered drink mix is needed to make a 0.5 m solution of 100 ml?

Answers: 1

Answer

Chemistry, 22.06.2019 11:50

What substance has a mass of 9.5g and volume of 2.1cm^3

Answers: 2

Answer

Chemistry, 22.06.2019 17:00

The biosphere of the earth is made up of what compound? organic or inorganic?

Answers: 3

Answer

Chemistry, 22.06.2019 22:30

What must be in balance for temperatures to remain constant?