Choose the compound that has the lowest surface tension. (Consider intermolecular forces) Не Li Be B F Ne 17 Na Mg Al Si CI Ar 20 21 22 24 25 27 28 35 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te Хе 74 77 Cs Ba Lu Hf Ta W Re Os Ir Pt Au Hg TI Pb Bi Po At Rn 12 Fr Ra ** Lr Rf Db Sg Bh Hs Mt Uun Uu Uub Uuq "Lanthanide series La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb **Actinide series Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Select one: HOCH;CH;OH O CH;CH;CH2NH2 Oe CH3COOH od CH;CH2CH2OH

Q: Given the following substances, which one is expected to have the highest melting point? (A) Cl207…

A: melting point : melting point of a substance is defined as the temperature at which substance…

Q: CH. :N=N: Dipoles can form Naci Electrons are shared H H:C:H Double and triple bonds can form Formed…

A:

Q: Consider the unit cel below: 0.40 nm 90 90 0.30 nm 0,30 nm a) What crystal structure is this? b)…

A:

Q: Explain how the conductivity of electricity and the high boiling points of metals are explained by…

A: The conductivity of electricity and the high boiling points of metals are explained by a metallic…

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A: Given : a = 543.1 pm

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Q: Which of the following compounds has the lowest boiling point? H He ome %3D 10 Li Be BCNO F Ne…

A: Boiling point is generally depends on intermolecular forces.  Stronger the intermolecular forces…

Q: C Explain why solid sodium conducts electricity but solid sodium chloride does not conduct…

A: For electricity to flow, there must be free electrons , free flow of electrons or free movement of…

Q: 9) Which sample of water will have the highest vapor pressure? 1) 40 ml at 32 C 2) 10 ml at 82 C 3)…

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Q: Platinum has ΔHvap= 510.4kJ/mol and ΔSvap= 124.7 J/K•mol What is the appropriate boiling point of…

A: It is given that change in enthalpy of vaporization for platinum is 510.4 kJ/mol and change in…

Q: 3. Identify in sulphur dioxide SO2, the type of i. intramolecular bonding, ii. intermolecular…

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

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A: As the Ca2+ are present at corners and face centres, it is FCC structure. For BCC, the atom is…

Q: Which one of the following substances would be expected to have the weakest intermolecular…

A: Answer

Q: 28)Which has the highest melting point MgO H2O CH3CH2CH3 Ar

A: The temperature at which solid form is converted to   liquid form is known as melting point.

Q: 8. Which of the following compounds is expected to have the strongest ion-ion interaction force? a)…

A: Here we have to predict the ionic compound in which ion-ion interaction will be strongest.

Q: Classify each substance in the table as either a metallic, ionic, molecular, or covalent network…

A: Metals have high malleability as they can easily be converted  into sheets .

Q: 7. Melting points of Br2 and ICl are - 7.2 and 27.2°C, respectively and their electrons are same.…

A: Both Br2 and ICl  are isoelectronic, but their melting points are different.

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A:

Q: Uses of Amorphous carbon

A: Amorphous carbon is one of the non-crystalline allotrope of carbon as evident from its name. It is…

Q: Which of the following compounds has the highest boiling point? 2 H Не thum bo cton fue 10 Li Be F…

A: The boiling point is a physical property, that is, it will not change the chemical structure of the…

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Q: Which compound is most likely to have ionic forces? a.H20 b.Al203 c.PCI3 d.Xe

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A: B. Lattice Energy

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A: As per the diagram:

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Q: Is lactose an ionic or covalent compound? What type of intermolecular forces exist in lactose

A: lactose is a covalent compound.

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A: The density of the crystal determines different parameters associated with the metal. Knowing the…

Q: types of forces that are likely to hold H2O its solid phase together uopn condensation/deposition

A:

Q: Which substance is a network covalent solid? A) Carbon Dioxide, CO2 B) Diamond. C C) Mercury, Mg…

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Q: Which substance forms a metallic lattice? K C (graphite) I2 MgS

A:

Q: NH3 & H2O a. illustrate the lewis dot structure b. polar or nonpolar?

A: a. To write the Lewis dot structure we should know the total number of valence electrons  b.…

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A:

Q: For each pair of substance, identify the substance that is likely to have a higher boiling point.…

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Q: Choose the compound that has the lowest surface tension. (Consider intermolecular forces) 2 H Не 400…

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A:

Q: Q1/ There are three alloys ( A,B ,C) have atomic wieght, desity, and atomic radus as listed in…

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Q: Which bonded phase is the most nonpolar? C18, C4, or C8?

A: Given: C18, C4, or C8 To find: The bonded phase which is most nonpolar.

Q: 111. Which substance has ionic crystal lattice?( Co, NaCI, H2 ,CO2) * Your answer 9 This is a…

A:

Q: 9. NaBr forms a crystal lattice similar to octahedral NaCl. Calculate the density of NaBr. Propose a…

A: The crystal lattice of NaBr is similar to that of octahedral NaCl. Formula of density: d = z×MNA×a3

Q: Which solid will be least soluble in water? O FEPO4 O Caso4 CASO4 KNO3

A: The solubility of ionic solids can be predicted by knowing solubility rules These solubility rules…

Q: 2. How to find what a materials crystal structure is? (FCC, BCC or neither FCC or BCC or

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Q: What is the best description of conductivity? Choose one:  The ability of a substance to break…

A: In the given options, the best description about conductivity is The degree to which electricity…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.