What is the total number of oxygen atoms on the right-hand side of this chemical equation? 3 ΗHΝO, (ag)-ΗNO, (ag)+H,O()+ 2NO ε)

Q: How many moles of Ca(OH)2 are present in 370.47 grams of Ca(OH)2?  2  3  5  6

A:

Q: What is the molar mass of the following compounds.            a. Epsom Salt, the chemical formula…

A: (a) Molar mass of Epsom salt ( MgSO4 . 7H2O ) = (24 x 1) + (32 x 1) + (16 x 4 ) + (18 x 7)…

Q: The total of electrons lost that is equal to the total number of electrons gained in the balanced…

A:

Q: Give the name and formula of the compound formed from the following elements: (a) cesium and…

A: a) The element cesium lies in the 1A (1) group of the periodic table. Elements in the 1A (1) group…

Q: 5. How many hydrogen atoms in this compound? OH но OH А. 22 В. 23 Agu С. 21 D. 20

A: The given structure is an organic compound.

Q: Which of the following elements would you expect to have properties most similar to those of…

A: Given elements: a) Cu b) F c) Na d) Cr e) S

Q: Which of the following is given wrong ? O A) NO2: Nitrogen Dioxide O B) Magnesium Carbonate: MgCO3 2…

A: Statement A Correct  Statement B Correct  Statement C Correct  Statement D Incorrect  Statement E…

Q: When 0.220 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given : Mass of iron=0.220 g Atomic weight of iron=55.85 g/mol Atomic weight of oxygen=16 g/mol Mass…

Q: What is the mass percentage of oxygen in phosphorus acid (H3PO3)? O 62.2 % 42.8 % 58.5 % 82.0 % 37.8…

A: Mass percentage of any element can be calculated by: Mass percentage=Mass of element in the…

Q: Which of the following is NOT a Representative Element O Ni Sn Rb Sb O Pb O

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Q: The difference between 7°Br and 81Br is their number of: neutrons electrons protons

A: We have to predict the difference between given atoms.

Q: What is the formula of the metal oxide formed from this reaction? XCO3 + Heat --->

A: A general preparation of the alkaline earth oxides involves heating the metal carbonates.

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: 4B.2 Name the following compounds. a) Br b) F Br e) f) an

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Q: A 6.700-g hydrate of sodium sulfate, Na2SO4-nH2O loses 2.896 g of its mass upon heating. The mass…

A: In this question, we will determine the value of n ( where n is the number of water molecules )…

Q: In the structure given below, the total number of Hydrogen and carbon atoms are: O 5, 10 O 8,4 O 10,…

A: The given compound is : The number of carbon atoms and hydrogen atoms has to be determined.  For…

Q: What is the molecular weight of a sample of ferrous sulfide heptahydrate (FeS-7H2O)? (Round all…

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Q: How many of the following elements are nonmetals? F Са H Ве Ne 4 3 O 1 2

A: How many elements are  non- metals among the following : F, Ca , H , Be , Ne , O  = ?

Q: Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in C12H22O11.

A: Each substance/molecule gets formed by combining some element's atom with certain proportion. The…

Q: For the compound (Ca(OH)2) or calcium hydroxide, find the per cent composition of the element…

A: Given: The atomic weight of Ca=40 Molecular mass of calcium hydroxide= 1 x 40 + 2 x (1 + 16)=74…

Q: What is the molecular weight of a sample of ferrous sulfide heptahydrate (FeS-7H20)? (Round all…

A: Molecular weight of a compound is the sum of its individual atoms' malar mass.

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: Determine the Average Atomic Mass of the mixtures of Hydrogen isotopes. 99% 'H, 0.8% ²H, and 0.2% 'H

A: Answer is explained below.

Q: When 0.210 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: The symbol for iron is Fe The symbol for oxygen is O The molar mass of Fe is 55.85g/mol The molar…

Q: What is the total number of oxygen atoms on the left-hand side of this chemical equation? 2 Ca,…

A:

Q: Magnesium sulfate (M9SO.) O a. 1 O b. 2 О с. 3 O d. 4

A: Magnesium sulfate is an ionic compound. An ionic compound is made of cation and an anion. Here,…

Q: Give the chemical name or formula, whichever applies, of the following compounds. 1. Bao 2. AuCl3 3.…

A: A chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.

Q: How many grams of magnesium are required to produce 4.380 kg of Siı? (At mass: Mg-24.31; Si-28.09)…

A: Recall the given reaction,  SiCl4  +  2 Mg                   Si  +  2 MgCl2   4.380 Kg of Si is…

Q: Calculate the percentege mass in KMnO4. [Relative Atomic masses of: K= 39, Mn= 55 and O= 16]

A: Consider the given relative mass of the atoms present in KMnO4 is as follows; K = 39, Mn = 55 and O…

Q: Which of the following is false regarding the Fe(NO3)3 compound?   A) Total net charge of the…

A: Compound = Fe(NO3)3 It is an ionic compound.

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: Which of the formulas must be molecular formulas? O C̟H¸N,0 C,H¸O, CH,0 O PO РО 10

A: Emperical formula is that way representing the chemical fourmla in which elements are present in…

Q: What is the mass percent of oxygen in water: 33.3% 5.60% 88.8% O 11.2%

A:

Q: A sample is found to contain 63.65% nitrogen and 36.35% oxygen. What is its chemical formula? O N20…

A: Emperical formula can be determined from the % of different elements present in a molecule. If…

Q: 4. When a 19.34 gram piece of lithium is placed in a sample of water, how many grams of hydrogen gas…

A: given  Li = 19.34 g molar mass of lithium = 6.94 g mol-1 molar mass of hydrogen gas = 2.016 g/mole…

Q: For the compound (Ca(OH)2) or calcium hydroxide, find the per cent composition of the element…

A: Given compound is Calcium hydroxide Ca(OH)2 Atomic weight of  Ca = 40 g/mol O = 16 g/mol H = 1g/mol…

Q: ind number of aluminum (Al) atoms in a peace of pure (Al) block with imensions equal to 2.0 cm x 2.0…

A:

Q: 19.18. What is the empirical formula of a mineral contg. 3.37% HO; 19.10% AlO: 21.00% CaO; and…

A: Empirical formula is the simplest formula of a compound which show ratio of atoms or molecules in…

Q: what is the atomic weight of O3?

A: Atomic weight of O3 = ?

Q: 5. A student created a model for the following balanced equation as shown below. What color or…

A: Answer :- White color circle (shaded with black lines)  In student's model, element Sulfur is…

Q: 4. : What is the correct formula for the compound formed between potassium and phosphorus based on…

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

Q: When 0.210 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given  Wt. If iron = 0.210 g  Wt. Of iron oxide = 0.341 g  Atomic weight of iron = 55.85 g/mol…

Q: What is the chemical formula if the compound contains 1 Nitrogen and 4 Hydrogen? * b. N4HỊ a. NH. A.…

A:

Q: 10) A patient is to be given 2 litres of 0.9% sodium chloride via intravenous infusion over a 24…

A: From given concentration of sodium chloride we can calculate the millimoles of sodium.

Q: Chemical formula of Mg2+ and PO43

A: Chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.

Q: In the following set indicate the most reactive element.    P          Cl                 Ar…

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Q: Mg(NO,), Mg: N: O: 2) (NH,),PO, N: H: O: P: 3) Al,(SO.); Al: S: O:

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Q: 4 g of Y reacts completely with oxygen. The following equation (ii) represents the reaction. 4 g Y…

A: From now onwards, please, post the question in English only. We have to predict the mass of product…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.