Which has the highest melting point? LiH, CH4, or NH3

Q: Which of the following compounds is likely to have the lowest melting point? NaCl CS2 Pb…

A: Melting point: The temperature at which a solid substance melts to achieve liquid state. Melting…

Q: describes them. Color Density in g/cm Melting Point in Substance Kelvin Aluminum Oxidane Xenon…

A: Fill in the table

Q: 9. Complete and balance the following equation (include correct physical state of each product)-…

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Q: Which type of compound is used to color glass? OBases OPolymers O Alloys Metal oxides Acids

A: Glass is coloured when metal oxides or metal powders are added to molten glass. The colour of glass…

Q: Why does sodium fluoride have a melting point of 993°C but nitrogen has a melting point of -210°C?

A: Please find your solution below : Melting point of any substance is defined as the temperature at…

Q: 4. Write balanced formation equations for the following, indicate proper states: → N2O3(g) C2H3F(g)

A: A question based on general chemistry that is to be accomplished.

Q: Differentiate between calcium carbonate and calcium oxalate crystals.

A: Both calcium carbonate and calcium oxalate are alkaline earth metal salts.

Q: calculate the theoretical yield of ammonia produced by the reaction of 100 g of Hh 2 gas and 200 g…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: Which compound contains nitrogen in a +4 oxidation state? C. NO2 A. N2 B. NH3 D. HNO2

A: In the molecule, the mathematical sum of the each species oxidation state will be equivalent to the…

Q: The first inert gas compound to be synthesized was XePtF What is the percentage of xenon in the…

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Q: By fully describing the nature of each solid including a diagram for each, explain why solid HCl…

A: Melting point of a solid is quite dependent on the nature of the force between the atoms in a…

Q: MCQ 15: in Group IV, the highest melting point is of A. Carbon(Diamond) B. Tin (Sn) C. Lead (Pb) D.…

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Q: Rank the following in order of increasing(a) Melting point: Na, Si, Ar(b), ΔH(fus): Rb, Cs, Li

A: The inter-atomic force present in sodium is metallic bonding. This force binds numerous sodium atoms…

Q: In which one of the following reactions does sulfur disproportionate? O A. 2NAHSO3 + H2SO4 NazSO4 +…

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Q: Complete and balance the following direct union equations. а. К+ Brz b. Mg + 02 → С. H2 + Br2 > d.…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Explain the following in terms of structure and Magnesium has a higher melting temperature than…

A: The electronic configuration of Sodium ( 11Na ) - 1s2, 2s2,2p6,3s1 Magnesium (12Mg) -1s2,…

Q: What is the valence electron configuration for the Group 3A elements? How does metallic character…

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Q: Consider the elements O, Ba, Co, Be, Br, and Se. From this list,select the element that (a) is most…

A: The period and the groups of the given elements are stated as follows, Electronegativity of the…

Q: Which of the following compounds would you expect to have the lowest melting point? CaO H2O Na2O…

A: Ionic compounds with higher charges have higher melting point due to strong intermolecular forces…

Q: At room temperature, one of these compounds is a solid and one is a liquid: SiO, or PBr3.

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Q: Explain why CO 2 is a gas at room temperature but H 2O is a liquid

A: There are three states of matter: Solid state Liquid state Gaseous state Non-polar covalent…

Q: Which of these three elements ( Cl2, Br2, I2) is most volatile?

A: The volatility of a compound depends on the intermolecular force present in it. The higher the…

Q: What is the chemical formula of silver nitrate? * a. AGNO3 b. Ag(NO3)2 A. c. Ag(NOs)3 d. Ag.NO3 D.…

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Q: What is the oxidation number of arsenic in K3AsO4? O +6 O +3 O +5 O +8

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Q: Which of the following observations give evidence that a crystal is a hydrate? One or more answers…

A: Solutions- Crystals are hydrated because water molecule in present inside the crystal.

Q: In which of the following does nitrogen have the lowest oxidation state? NaN * O_{2}; HN * O_{3};…

A: Oxidation state of the Nitrogen in the given compounds

Q: DRAW a covalent bond for PH3 and SiO2

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Q: What is the oxidation state of X in XgO] -2 O -1 03 01 O 2

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Q: Which is a metal alloy? O Steel O Diamond O Glasses O Limestone

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Q: Chemical formula of platinum(iii)sulfite and Triselenium dibromide

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Q: In which compound does sulfur have the highest oxidation number? O NazSO4 O H2S O SCI2 O SO2 O H2SO3

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Q: Why is Cl2 a gas, Br2 a liquid, and I2 a solid at room temperature?

A: In non-polar molecules, London dispersion forces occurs. These types of forces are directly…

Q: Apatite is a main mineral source for the production of phosphorus. Calculate the atomic and mass…

A: Molar weight of apatite = 509.2 g/molMass of phosphorus = 123.88 g/mol

Q: Which of the following is expected to have the lowest melting point? I3D II IV O II O IV O O o o

A: Melting point of a compound depends on the strength of intermolecular forces. Greater is the…

Q: Indicate the oxidation state of every individual element in the following compounds. b. CO2 e. CH4

A: Given compounds are carbon dioxide and methane  CO2 - carbon dioxide  and   CH4 - methane

Q: What is the oxidation number of sulfur in the compound Al2(SO4)3 ?

A: Given :-  compound = Al2(SO4)3 i.e. aluminium sulfate  To find :-  oxidation number of sulfur in…

Q: why halogens are highly volatile in nature?

A: Boiling point of a molecule depends upon the intermolecular force present in it. If the…

Q: Gणए क्रम्ह ककएलेकांडम +o8 प्राणेजा বেলक बकट गंपड़ बी गलभुर्तावरळ ग़ल्ब्भुरकात्रट उतर ग्रेठ देनक उँ…

A: We have to carry out the given synthesis.

Q: What are the oxidation numbers for each element in the compound: PbO2

A: Given molecule: PbO2 We have to calculate the oxidation numbers of Pb and O in PbO2

Q: Which of the following compounds is likely to have the lowest melting point?   : C a O MgO S c O Se…

A: The melting points of the oxides of the Alkaline Earth metals or 2nd group element increases till…

Q: ZnS+O2=ZnO+SO2 How many kilograms of sulfur dioxide are produced when 160 kg of ZnS is roasted in…

A: The balanced chemical equation can be written as follows-

Q: Which has the highest melting point HO. B 3. both 2 and 3

A: We have to choose the following given compounds are the highest boiling point among the three as…

Q: Compare the physical properties (appearance, melting point, boiling point) of silicon dioxide and…

A: Silicon and carbon belong to the same group. The oxides of silicon and carbon are known as silicon…

Q: CH4 is methane. This compound is ________.a. inorganicb. organicc. reactived. a crystal

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Q: Which of the following elements combines with oxygen to form a covalent network solid. A. Si В. S С.…

A: Since covalent solid can be made between non metals only. Hence Mg is rejected.

Q: How many energy levels are there in the valence band of a single crystal of potassium with a mass of…

A: given that mass of potassium is 6.05mg

Q: Which of the following compounds has the highest boiling point? Не Li Be B. Ne 14 17 Na Mg Al Si ci…

A: Answer:- This question is answered by using the simple concept of boiling point which depends on the…

Q: If 55 g of SiO2  glass is placed into 111 L of 0.032 M HF, is there enough HF to dissolve all of the…

A: The balanced equation for the reaction is given below.

Q: Which one of the following reactions is an example of nitrogen fixation? A. N2O5(g) = NO3(g) +…

A: Nitrogen fixation : This process is very essential for life because the fixed inorganic nitrogen…