10. What symbol completes the equation below? 27 Al + 12 Не — Х + O 30 Si 14 O 30 P 15 O 31 31 :P 15 16 O 30 16

Q: 15. How many O atoms are in 2.00 g Al₂O3 ? Al = 26.98 g/mole, O = 16.00 g/ mole 3.54 x10exp22 O…

A:

Q: A container has 5.30 x 1023 molecules (aka atoms) of bromine gas. Calculate the mass (in g) of…

A: A container has 5.30 x 1023 molecules (aka atoms) of bromine gas. We have to calculate the mass (in…

Q: When the compound (Ni (C4H7N2O2) 2) formed in the gravimetric analysis of the 0.5012 gram nickel…

A: It is given that the mass of the sample is 0.5012 gram and the mass of the compound formed is 0.1836…

Q: A solid circular cone made of pure platinum (density = 21.45 g/cm3) has a diameter of 2.75 cm and a…

A: Given information,    Diameter (d) = 2.75 cm so radius (r) = 1.375 cm     Density = 21.45 g/cm3…

Q: 2163 T(K) 1557 Mg₂SiO4 20 40 60 Mole % SiO₂ 80 1873 1543 SIO₂

A:

Q: Which of the following pairs of compounds have the same empirical formula? a. acetylene, C2H2, and…

A:

Q: 5) 0.7971 g of molecule, X, is found to contain 3.0 x 1022 atoms. Deduce the identity of X. Given N…

A: Given: Mass of X2 = 0.7971 g Atoms of X2 = 3.0×1022 NA = 6.023×1023 mol-1

Q: which of the following are true for 1 mole of water at room temperature (approximately 24 degrees…

A: 1. The molar mass of water is 18.01 g/mol. This means 1 mole of water has a mass 18.01 g. So, first…

Q: The percentage by mass of nitrogen is 46.7% for a species containing only nitrogen and oxygen.…

A:

Q: How many kilograms are there in 6.02x10^23 bromine ions? Br-80

A:

Q: What is the total number of oxygen atoms on the right-hand side of this chemical equation? 6…

A: Given chemical equation:                             6CO2(g) +6H2O(l)→ C6H12O6(s) + 6O2(g) Symbol of…

Q: Carboxylic Acid Resolve the reactions.

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: 45). Calculate the percent by mass of each element in the following compounds. HClO₃ UF₄ CaH₂

A: percent by mass of each element in the compound is calculated by the ratio of mass of one element in…

Q: NO2 Br 1) FeHCI 2) NaOH, H,O Br. 3) NaNO, HCI 4) CuBr NH2 NO2 Br Br. Br Br NO2 Br Br. Br Br. Br Br…

A: The reaction sequence is as follows:

Q: How many moles are equal to 4.5 x 1023 molecules of carbon monoxide? (Round to two decimal places).

A: No of CO molecules = 4.5 × 1023 molecules No fo moles = to be determined

Q: Complete and balance the following equation. The missing term is 55 Cu + 29 Cu 55 28 Cu O 5629Cu O…

A: Complete the equation by filling the missing term-

Q: (а) (1) NaN3 (2) LİAIH. (3) Н,о* Br (b) excess CH31 (1) (2) Ag20 (3) heat Br (1) HCI, NaNO2 (2) CuBr

A: The question is based on the concept of organic reactions.   we have to identify the Product formed…

Q: References) Use the References to access important values if needed for this question. The elemental…

A:

Q: 4.39 x 10^27 P4 O10 molecules = Atoms

A:

Q: How many oxygen atoms are there in 3.15 g of Al2(S208)3 (MW AI2(S208)3 = 330.34 amu) O a. 3.01 X…

A: Given that : Molecular weight of Al2(S2O8)3 = 630.34 amu or g/mol Mass of Al2(S2O8)3 = 3.15 g Number…

Q: What number should be placed in the blank in order for this equation to follow the Law of…

A:

Q: What is the percent by mass of hydrogen in Ca(OH)2? Group of answer choices 2.72 % 1.36% 21.6 %…

A: % by mass basically tells about the concentration of one element present in the mixture. The formula…

Q: If the weight of calcium oxalate is 2g and weight of ammonium oxalate is 0.15 g then te percentage…

A: Given that Weight of  calcium oxalate (CaC2O4) = 2g  Weight of  ammonium oxalate ((NH4)2C2O4) = 0.15…

Q: This number of particles is called Avogadro's number (NA) and has a value of... 6.02 x 10 – 23 0.602…

A:

Q: What are the values for % Cl and % F, respectively, for Sample II?A. 0.622 and 61.65 C. 38.35 and…

A: Mass percent of a compound is equal to the mass of component divided by the total mass of all the…

Q: What percentage of NH4NO3 is nitrogen?

A: Mass percent of element  is the mass of element present in 100g of the compound. Mass percent of…

Q: You have a 125-g sample of one of these substances. You determine that it is made of 16.7 g H, 75.0…

A: A chemical compound often comprises the same elements in very same compositions by mass, according…

Q: 5. Which statement is NOT true? a. One mole of a substance contains a fixed number of particles. b.…

A:

Q: If 10 magnesium (Mg) atoms and 10 chlorine (Cl) atoms bump into eaxh othee, could they form a…

A:

Q: 4 H20, HSO4 9. Bra HO HCI 1. ВН-THF 2. НО, НО Нао МСРВА CH;OH H2SO4 7

A:

Q: +2 Pb Thallium Lead 200.592 2818 32 182 1832 18 1 204.383 207.2 28 18 32 10 2818 32 18 3 111 112 +2…

A: In Balanced chemical equation number of atoms of each species are equal on both reactant and…

Q: 1.50 g Lithium Carbonate to atoms O 9.09 x 10*23 atoms O 7.12 x 10°23 atoms 8.06 x 10*23 atoms O…

A: Lithium carbonate is a chemical salt, a lithium carbonate salt with the Li2CO3 formula. This white…

Q: Convert 9.22 g arsenic (111) sulfide to sulfide ions

A: given; 9.22 g arsenic sulfide. molar mass of arsenic sulphide = 246 g/mol formula of arsenic…

Q: O Represent the following equations with an appropriate diagram/illustration/ or model. Indicate a…

A: Answer is below

Q: Balance the equations by inserting coefficients as needed. Sb + Cl_{2} -> SbCl_{3} GaBr_{3} +…

A: A balanced chemical equation or reaction is the one in which the total number of atoms for each…

Q: Which of the following is equal to 6.022 x 10^23 molecules? * 31.98 g Q_2

A: We will choose Correct statement

Q: Which one of the following is not equivalent to one mol of the substance? O 65.39 g Zn O 14.01 g N O…

A: Given: To identify which option is not equivalent to 1 mole.

Q: 11. A compound was found to contain 59.9% C, 8.06% H, and 32.0% O by mass. What is the empirical…

A: Given the precentage composition by mass of carbon, hydrogen and oxygenin a compound.we are asked…

Q: A student was given the following question: How many atoms of Br are in 50 grams of CaBr2? They made…

A: Their set up is wrong the correct set up would be Because we will get 2  moles of Br atom from 1…

Q: How many atoms are there in 3.33 moles of strontium? * 2.00 x 1024 atoms * 3.21 x 1032 atoms * 1.11…

A: GivenMoles of strontium = 3.33 moles Molar mass of strontium = 87.62 g/moleNo of atoms in 3.33 moles…

Q: What is the total number of oxygen atoms on the right-hand side of this chemical equation? 3 ΗNO, (α…

A:

Q: Use the References to access important values if needed for this question. Mn, S O, n H20 is the…

A:

Q: What is the mass percent of calcium in CaCO3? 25.7% 33.3% 60.0% 15.0% 40.0%

A: The compound given is CaCO3. Assuming 1 mole of compound.

Q: Given the Ka values, estimate the pKa value of each of the following acids without using a…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: How many moles are there in each sample? 55.0 g Ti 16.9 mg Na 7.95 x 10^24 Ne atoms

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 14 14 7.6C7N+ O 0 1.H O 0 le 0 -le 14 IN O

A:

Q: 0.42139 17. G 5 19g. mass of Unknown sulfate. macs Of Empty Crucible & cover 18.33449 mass of…

A: Answer: This question is based on mass percentage calculation of sulfate in the given sample.

Q: How is the mass percent of elements in a compound different for 1.0 g sample versus a 100g sample…

A: Compounds comprising variety of elements are formed by combinations of these elements in certain…

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.