39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of phosphine, PH3 b. 4.75 g of phosphine, PH3 c. 1.25 x 10-2 g of lead(II) acetate, Pb(CH3 CO2), d. 1.25 x 10-2 moles of lead(II) acetate, Pb(CH3 CO2), e. a sample of benzene, C6 H6, which contains a total of 5.40 moles of carbon

Q: What mass of AgI (234.8 g/mol) can be produced from a 0.8093 g sample that is 47.6% MgI2 (278.11…

A: 0.8093 g of sample has 47.6 % MgI2 . Here, we have to calculate the mass of AgI that can be produced…

Q: 49. How many moles are there in 500 g indigo, C16H10N202, a blue dye. c. 1.15 X10E24 mol a. 1.90 mol…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Leucine is an amino acid with the formula C6H13NO2C6H13NO2. Determine the number of moles of carbon…

A: Given, mass of leucine, C6H13NO2 = 51.90 g Now, moles of leucine can be calculated as,

Q: 3) Avogadro's number is most simply A) 6.02 x 1023 amu in 1 mole of a substance. B) 6.02 x 1023…

A: The number of units in 1 mole of a substance is known as Avogadro's number. And the value of…

Q: Only need help with subpart "d"   Use the following data and steps below to calculate the formula…

A: The di-hydrate of copper chloride has the molecular formula, CuCl2.2H2O

Q: 41. Calculate the number of moles of carbon atoms present in each of the following samples. a. 1.271…

A:

Q: Br2 hv Cl2 b. 1 mole 1. BH,, THF C. 2. H,0,, NAOH Cl2 4] d.

A:

Q: Tetrasilane (Si4H10) is a liquid with a density of 0.825 g cm-3 . It reacts with oxygen to give…

A: First calculate the mass of tetrasilane. Convert the above calculated mass to moles.

Q: Calculations Using the Mole Learning Goal: 2.32x1023 13C atoms To learn how to convert grams to…

A:

Q: 39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of…

A:

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3(Si2O5)2(OH)2 An…

A: Given: chemical formula of the talc. To find : Total number of moles of oxygen in the sample.…

Q: Consider the following chemical reaction: Na2CO3(aq) + HCl(aq) -----------> NaCl(aq) + CO2(g) +…

A:

Q: 50 Soap, vitamin Cand orange juice The main constituent of soap has a formula C18HON The formula of…

A:

Q: g Fe203 Pg Co g Fe g CO2 d mole Fe203 mol CO mol Fe mole CO2 |partides Fe203 molecules CO atoms Fe…

A: The question is based on the concept of chemical reactions. we have to identify and write the units…

Q: Question attached

A: Interpretation - To find the number of molecules present in each of the samples.   Formula used -…

Q: mass of empty cruciole = 31.06ua. mass of Crucible+ Mg= 31.034 t0.001 1) Determine the empirical…

A:

Q: The reaction between solid whit phosphorus and oxygen produces solid tetraphosphorusdecoxide…

A: Given data, Mass of P4 = 25.0g Mass of O2 = 50.0g Moles of a substance is defined as the ratio of…

Q: 1. The number of atoms in 2.0 mol of nitrogen gas, N2, is: a. 1.8 x 1024 b. 2.4 x 1023 c. 1.2 x 1024…

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

Q: Complete the table. Element Moles Number of Atoms Cr 9.61 × 1023 Fe 1.52 x 10-5 Ti 0.0365 Hg 1.09 ×…

A: We know that , 1 mole = 6.022 × 1023 atoms                              .....(1)…

Q: what is the maximum number of moles of C that can be formed?

A: The branch of chemistry that deals with the structure, properties and the reaction of the organic…

Q: O Naphthalene (128.164 g/mol) H. H. H. O Acetic acid (59.04 g/mol) H-C-C HICI

A:

Q: How many moles (of molecules or formula units) are in each sample? Express your answer in moles to…

A: Given A) 29.2 g NO2 B) 1.35 kg CO2 C) 45.9 g KNO3 D) 164.5 kg Na2SO4 moles (of molecules or formula…

Q: _____1. What is the % C in aspirin by mass in aspirin? _____2. What is the % O in aspirin by mass…

A:

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Compound contains only C, H and O. Mass of compound combusted = 1.000 g. Mass of CO2 produced…

Q: How many bromine atoms are present in 32.5 g of CH2Br2?

A: Since there are multiple questions, we are authorized to answer only the first one. If you want the…

Q: 250(g) + 02 (g) + HCI (g) NH3(g) MgCO3 250 (g) NH,CI (s) + CO2(g) Mgo (s) +

A: Entropy denotes by a symbol 's' . Entropy of a universe increasses spontaneously.   Second law of…

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: Calculate the mass of Mg. Calculate the mass of the product. Calculate the moles of Mg in the…

A: Mass of any product is calculated by eliminating the mass of watch glass and evaporating dish from…

Q: u. 4. In the chemical reaction 2AL203 - 4Al + 302, the molar ratio of aluminum to oxygen is a. 2:3…

A: 4. given :-2Al2O3 → 4Al + 3O2  To calculate :- molar ratio of Al to O2  5. given :- P4O10 + 6H2O →4…

Q: Polymers are large molecules composed of simple units repeated many times. Thus, they often have…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: The moles of Glucose(C6H12O6) in 18 grams of Sucrose is O 342 O 0.01 O 34.2 O 0.1

A: In this question, we want to determine the moles of Glucose. How we can determine you can see…

Q: Which sample represents the greatest number of moles? 10 Water (A Compound) Water medecdes havea…

A: The moles of a substance can be calculated as follows: Moles of substance=Mass of substanceMolar…

Q: 6. Which of the following samples contains the greatest number of molecules? A. 1 g phosphorus, P4…

A:

Q: Chemistry a student was given a sample of CaCO3 * XH2O to find the empirical formula. she measured…

A: CaCO3 .xH2O  upon heating  will lose its water and this a given sample will lose some of its mass…

Q: What amount of oxygen, O2, (in moles) contains 1.8x1022 molecules? А. 0.0030 В. 0.030 С. 0.30 D. 3.0

A: Given that :- O2 contains 1.8 × 10²² molecules

Q: c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

A: Given  mass % of C = 30.27 %  total mass of compound = 1.367 g  mass of SO2 = 1.765 g    Required…

Q: (c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

A: We have to find empirical formula for given compound

Q: A 10.5 g sample of lithium is reacted with 18.5 g of fluorine to form lithium fluoride: Li + F2 →…

A: Given, A 10.5 g sample of lithium is reacted with 18.5 g of fluorine to form lithium fluoride:Li +…

Q: The mass of C3H8O3 that can be made from 2.4 × 1023 H atoms is

A:

Q: 1. How many moles are in each of the given samples? a) 2.50 mL of water (assume density of water is…

A: Note : As per our guidelines we are supposed to answer first 3 parts .please resubmit the other…

Q: C. Calculate the number of atoms or molecules in each of the following samples. 19) 0.357 moles of…

A:

Q: A) How many grams of Mgl2 is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

A:

Q: How many moles of atoms are in each elemental sample? 1) Express your answer using two significant…

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

Q: 51 Caffeine Caffeine, found in coffee, tea, chocolate, cola beverages is a highly popular stimulant…

A:

Q: Question is attached

A: Following question is based on concept of Stoichiometry.

Q: ? + {H → 15 ← Oci 8 GT 8 15N+?

A:

Q: 1.The compuond cisplatin Pt(NH3)2Cl2 is an antitumor. a)Calculate the elemental percent composition…

A: In problem a) we will find out the mass percentage of elements present in cisplatin and in b) we…

Q: Consider the following definitions. 1 doz = 12 1 gross = 144 1 ream = 500 1 molmol =…

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

Q: Calculate the number of molecules in 27.6 grams of glucose, C6H1206. 9.23 x 1022atoms 1.05 x 1023…

A:

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.