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

Q: The deep blue compound Cu(NH3)4SO4 is made by the reaction of copper(II) sulfate and ammonia.

A: To solve this problem we have to use the Stoichiometry of balanced chemical equation .  First we…

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: Assume that you have these materials: a) Li (s); b) Br2 (l); Ge (s) and d) Si(s). Choose the best…

A: For a good electrical conductor, material should have free electron to move.

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: Why doesn't CO2 have a normal melting point and a normal boiling point whereas water does

A: The phase diagram of water and carbon dioxide are

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: Determine the number of bonding electrons and the number of nonbonding electrons in the structure of…

A: The structure of silicon dioxide is drawn as,

Q: How does adding water to the NaCl and SiO2 separate the two substances? What physical property is…

A: Filtration and distillation are physical separation methods that are based on the difference in…

Q: Distinguish among the substances silicon, silica, and silicon?

A: Silicon ,  Silica and Silicone has to be distinguished.

Q: Chromium, a transition metal used in chromeplating, forms both the C r 2+ and C r 3+ ions. Write…

A: Chromium, a transition metal used in chrome plating, forms both the Cr2+ and Cr3+ ions. Write the…

Q: 3. Describe the classification of nanomaterial based on their origin.

A: Please find below the complete classification tree of nano-particles.

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: What is the mass percent of water in Zn(NO3)2·6 H2O?

A: First calculate the mass of water.

Q: What is the mass percent of water in Zn(NO₃)₂･6 H₂O?

A:

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

A:

Q: How many grams of aluminum hydroxide are obtained from 13.7g of aluminum sulfide?

A: Given:Mass of Aluminium sulphide = 13.7 gMolar mass of Al2S3 which is 150.16g/mol.Balanced chemical…

Q: What is the oxidation number of S in the compound Na,S,O5?

A:

Q: What is efflorescence? Give an example?

A: The structure of chemical compound can be represented as structural formula. A structural formula…

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: How many moles of SO2 can be produced from 1.0 kg of pyrite?

A: The reactions that produces SO, from pyrite are: 4 FeS2 +11 O2  --->  2 Fe2O3 + 8 SO2 3 FeS2 +…

Q: What is the oxidation number of N in N2 O4?

A:

Q: How many grams of silver nitrate are required to produce 0.25 mall of silver sulfide?

A: Given :- number of moles of Ag2S = 0.25 mol  To be calculated = mass of AgNO3 (in g)

Q: What are the chemical properties of Lead and its occurance in nature

A: Lead have symbol Pb.

Q: 9. The general formula of silicate ion present cyclic silicates is (SIO3)n2n- O sio44- Si2052-…

A: Cyclic silicates contain three or more tetrahedral SiO42- units. These units are linked by two…

Q: Explain why N, is a gas at room temperature but H;O is a liquid

A: the answer is as follows:

Q: what is the chemical formula created when thallium (81) bonds with the polyatomic ion silicate?

A: We know that silicate is  SiO4-4 and thallium is Tl+3 In formation of compound charge is it transfer…

Q: 4. The chemical formula for sodium nitride is

A:

Q: Whare are the aluminum oxide and magnesium oxide used?

A: The major uses of specialty aluminium oxides are in refractories, ceramics, polishing and abrasive…

Q: What is the percentage of water in CoCl3.6H2O? please show me the steps to better understand.

A: The compound given is CoCl3.6H2O Molar mass of CoCl3.6H2O = 273.38 g/mol  Molar mass of H2O = 18.0…

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: What is the lewis structure for SiO2?

A:

Q: (Fe2O3) used in the Produce Cement Clinker.

A: ANSWER:- TRUE.                 =>Fe2O3 is used in the produce cement clinker.

Q: 6)a. Potassium permanganate c. Calcium carbonate e. Ferric carbonate

A:

Q: Explain why the interhalogen molecule BrCl3  exists but ClBr3 does not.

A: According to periodic properties, the size of the elements increases down the group.  The atomic…

Q: 1. How is the crystal formed? 2. Is it beneficial or harmful to man or both? Discuss how it is…

A: The process by which a solid form, where the atoms or molecules are highly organized into a…

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

A: Melting point of the substance is the temperature at which it start to melt and at the melting point…

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

A:

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 tons of the mineral perovskite(CaTi03) are required to produce 5.00 tons of titanium metal?

A: Given : Mass of titanium i.e Ti metal to be produced = 5.00 tons  Since 1 ton = 1000 Kg And 1 Kg =…

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: What is the oxidation state of sulfur in SF2?

A:

Q: Each of the following properties shows a regular trend inGroup 1A(1). Predict whether each increases…

A: Introduction: The group 1A of the periodic table belongs to alkali metal. It includes hydrogen,…

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: What is the composition, in atom percent, of an alloy that contains 98 g tin and 65 g of lead?

A:

Q: What does K3[Fe(C2O4)3].3H2O is used for ?

A: This compound is known as potassium ferrioxalate and it is photosensitive in nature that means…