What is Manganese ?

Q: What substances are present, and what are their masses, after the reaction of 10.00 g ofmagnesium…

A: THE IDEA HERE IS THAT CHEMICAL REACTIONS MUST OBEY THE LAW OF MASS CONSERVATION , WHICH STATES THAT…

Q: How many moles can .017 grams of magnesium produce?

A: Given that : Mass of magnesium = 0.017 g We have to calculate the number of moles in 0.017 g of…

Q: What is lithium?

A: Pure substances that are made up entirely of atoms and have the same number of protons in their…

Q: When would nitrogen become a nitrite ion, as opposed to nitrate or nitride

A: Given: Anions of Nitrogen: Nitride Nitrate Nitride

Q: What will happen to calcium phosphate Ca3 (PO4) 2 when heated from 60 ° C to 100 ° C?

A: The solubility product of Ca3(PO4)2 is 2.0 X 10-29

Q: What type of compound is Cs2SO4

A: Cs2SO4 is ionic  compound.

Q: Determine the weights of raw materials needed to prepare 75g samples for the given recipe of glass…

A: Given that -  Total mass of the sample = 75 g  Mole percentage of different recipes are -  Na2O =…

Q: What do the Group 4A Elements include?

A: Group 4A (or IVA) elements includes the nonmetal carbon (C), the metalloids silicon (Si) and…

Q: What is the chemical name? FeCl2

A: FeCl2 is a paramagnetic solid with a high melting point. The compound is white, but typical samples…

Q: Group IV (group 14) of the periodic table because 1. It forms an acid and a neutral oxide 2. it is…

A: The question is based on the concept of periodic properties. we have identify the properties which…

Q: Can you identify the lead (wire) color that represent the cathode?

A: Basically in electrolysis the red color wire indicates anode as a positive electrode at the same…

Q: How many vanadium atoms are contained in 158 kg of vanadium?

A: 1 mole of substance contains 6.022 x 1023 atom.

Q: Elements of Group IV that is non-metal Germanium a Lead b O Silicon.c Carbon d

A:

Q: 2. Balance the following equations (in the formation of heavier elements). a.*He +He - Be b. “He +n…

A: Given nuclear equations are :  a). 4He + 4He -----------> Be  b). 4He + n -------------> 4He…

Q: A 0.214 gram sample of Magnesium (atomic weight = 24.31 g/mol) is oxidized in a crucible. The final…

A:

Q: Chemical formula of NH4+ and PO43

A: We have to write the chemical formula of NH4+ and PO43-.

Q: What is the chemical name for NiBr2?

A: NiBr2 is the inorganic compound. it is a yellow-brown solid which dissolve in water to give…

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: The chemical analysis of a macromolecule has been provided. What is this macromolecule? Element…

A: The empirical formula of any compound can be determined by using the percentage mass composition of…

Q: An experiment requires that enough C6H12O6 be used to yield 17.2g of oxygen . How much C6H12O6 must…

A:

Q: The halogens are all in the same group. What is the pattern in reactivity as you go down group 7A?…

A: To  Does the reactivity increase or decrease, as we go down from F to CL to Br to I? How is this…

Q: 13 What is the mass of carbon which reacts with 223 g of lead oxide? 2PBO + C 2Pb + CO, 6 g 12 g 24…

A: 1 mole of a substance is equal to its atomic mass or molecular mass expressed in grams. The atomic…

Q: What is boron

A: We have to explain what is Boron.

Q: what is tin plague or tin disease?

A: Allotropy is the property of chemical element to exist in at least two distinct structures that…

Q: iron (II) phosphate Ca3(PO)2->Fe,N +COCNJ2+FePo4 1. How many grams of calcium phosphate must be used…

A: The stepwise solution is as follows -

Q: What is the percentage of nitrogen, by mass, in calciumnitrate?(a) 8.54% (b) 17.1% (c) 13.7% (d)…

A: Calcium nitrate is a compound of formula CaNO32. One mole of calcium nitrate contains two moles of…

Q: Two important components in the formation of bones and teeth O Magnesium and calcium O Calcium and…

A: Vitamins are essential for life. There are various types of vitamins A, B, C, D, E and K.

Q: You have 3.31 L of water that contains 25 mg/L of PO43-. What is the total amount of phosphate in…

A: • The values provided in the question are:-    i) Density of phosphate ion solution,d  = 25 mg/L…

Q: 142 Ва + 56 36 Kr + 3n 3in

A: A nuclear decay reaction is one that undergoes spontaneous decay reaction forming daughter atoms…

Q: Which of the following statements is INCORRECT? Germanium is classified as a metal. Lead is…

A:

Q: What is an alkali? Give an example.

A: Given What is an alkali? Give an example.

Q: How many grams of iron are needed to combine with 26.3 g of O to make Fe2O3?

A:

Q: How many moles of magnesium chloride are needed with 15 moles of aluminum? * 3MGCI2 + 2Al - 3Mg +…

A: Given: Moles of Al = 15 moles

Q: Br2, Fe

A: Benzene gives an aromatic electrophilic substitution reaction. The reaction completes in two steps.…

Q: Br u

A: For IUPAC naming following steps are required-> Identify the longest carbon chain containing…

Q: Chemical properties of oxygen

A: The chemical symbol of oxygen element is ''O''. The position of the oxygen (O) atom in modern…

Q: How many grams of titanium could be obtained from a44.00 mole sample of Ti6Al4V?

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: Determine the weights of raw materials needed to prepare 75g samples for the given recipe of glass…

A: Mass of Na2O is, Mass = (25% × 75 g) ÷ 100% Mass = 18.75 g   Mass of B2O3 is, Mass = (25% × 75 g) ÷…

Q: What is the correct name for P4O10?

A: The empirical formula for P4O10 is P2O5.

Q: How many grams of water would be lost if a 2.000 gram sample of CsF:1½H2O were heated?

A: Given : Mass of CsF.1½H2O = 2.000 g Molar mass of CsF.1½H2O = Atomic mass of Cs + Atomic mass of F +…

Q: The Group 1A elements A) melt at high temperatures B) are unreactive and are rarely found in…

A: Group 1A element are also called alkali metals. Li, Na, K, Rb, Cs.  Group I elements have 1 valence…

Q: Write the chemical equation for the word equation below. Each blank should be a different substance…

A: We have to react molybdenum(IV) chromate with lithium telluride to form molybdenum(IV) telluride and…

Q: d) 1. Н,о*, но HOʻ H 2. КMnOд, NaОН НО 3. Н,О*, д e) H. НО OH

A: Aldehydes and ketones can be selectively protected by 1,2 diols and the again deproctected using…

Q: Which of the following chemicals is not considered inorgan. Select one: a. NH SCN b. CH c. Na,C,0,…

A:

Q: If 5.3 g of gallium reacts with 5.3 g of oxygen to produce gallium oxide, what will we be left with…

A: Limiting reactant :-  A reactant whose number of moles are less than the number of moles  required…

Q: b. N2 c. Zn(OH) d. NOz е. LiH f Fe:O4

A: Oxidation number is the partial or imaginary charge present on an atom in the compound.  1.H2CO3 a)…

Q: What is mean by scavenger

A: Definition Simply put, scavengers are creatures that frequently eat other dead organisms and animals…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.