A sample of ammonia has a mass of 96.3 g. How many molecules are in this sample? A. 5.65 molecules B. 3.40 x 1024 molecules C.5.80 x 1025 molecules O D. 1.07 x 1023 molecules O E. 1.91 x 10-15 molecules

Q: 6) How many total atoms are in one mole of ammonia (NH3) ? A) 6.0×1023 B) 1.2×1024 C) 1.8×1024 D)…

A: How many total atoms are in one mole of ammonia?

Q: 1) a chemical mole A-is a kind of material B-is a large molecule C-contains an undetermined number…

A: Mole concept: Avogadro's number = 6.022 × 1023 1 mol of any substance contain 6.022 × 1023 molecules…

Q: Determine the number of atoms in 55.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Here given, the mass of one mole of sodium is 22.99 g. So, in 55 grams of sodium, there are…

Q: Anthracite is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A:

Q: here is 1.7 moles of the ionic compound FeCl3 How many moles of Cl- ions are there? a)1.024 x 10 to…

A: Ionic compound is that which is composed of anions and cations. A mole is the amount of substance…

Q: A compound was analyzed and the following results were obtained: • Molar mass: 270.4 g/mole • Mass…

A: The chemical formula of an unknown compound is determined by the percent by mass of the elements…

Q: Use the standard entropy data to determine the change in entropy for each of the reactions listed (…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A copper ring is composed of 1.45×1023 atoms.1.45×1023 atoms. Calculate the mass of the ring in…

A: The mass of the ring in grams is to be calculated

Q: (a) 2CH4(g) + 2CO2(g) CH4(g) + 2H0(g) + 2CO (g) (b) CO2(g) + 3H;(g) → CH;OH(g) + H2O(g) (c)…

A:

Q: How many atoms are in a 10.0 g sample of titanium (Ti)? O a. 5.06 x 1026 O b. 1.26 x 1023 C. 2.86 x…

A:

Q: Seawater is approximately 4.0% by mass dissolved ions, 85% of which are from NaCl. (a) Find the mass…

A: The concentration of seawater is 4% by mass. This implies that 4g of solute is present in 100 g of…

Q: D* (aq) + CO,-(aq)→ (s) +3H;O(1) HCI (g) + NH3 (g) → NH,CI (s) 2H2S(g) +302(g) → 2H,0(g) + 2SO2(g)…

A: Equation first :1 )  number of molecules of products is  more than that of reactant so entropy is…

Q: Which of the following equations are balanced? Balance those that need it.

A: Balanced chemical reactions are those reactions in which all the elements present in the reactant…

Q: ow many total atoms of Ba I ow many total atoms of N ow many total atoms of O ow many total atoms of…

A: Solution- In the below given -  Total atoms of Ba = 3 Total atoms of N =  6 Total atoms of O = 26

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molar mass of Au = 197.0 g/mol

Q: Find: a) what% by mass of oxygen are in 60 grams of NH4NO3 b) how many hydrogen atoms are in 60…

A: The answer to the following question is-

Q: A 6.95-g sample of Barium Chlorate, Ba(ClO3)2, contains __________ mol of this compound.   a 31.8…

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: Calculate the percent mass of each element of a compound NaHSO3 = 23.0 g/mol; H = 1.008 g/mol; S =…

A: Mass percent of each element is defined as the percentage of mass each element is having compared to…

Q: Determine the number of moles of H in each sample.(a) 4.67 mol H2O (b) 8.39 mol NH3(c) 0.117 mol…

A: Number of moles of a substance is the mass of substance present in a liter of solution.

Q: a. b. C. d. 'Н CI 1. BULI, -70 °C to +20 °C 2. H₂0 1. BuLi, -70 °C to +20 °C 2. H₂0 NMe2 OMe NH3 NH3…

A:

Q: A 36.41-g sample of calcium carbonate (CaCO3 ) contains 14.58 g of calcium and 4.36 g of carbon.…

A: Given data: Mass of CaCO3 sample = 36.41 g Mass of calcium = 14.58 g Mass of carbon = 4.36 Formula…

Q: → 2NH3 (9) 1. N0 + 3H, 2. CO20) 2(g) CO(NH,2) + H,O (6), + 2NH, 2(g) 3(g) 3. C,H210) + H,O (a) 2CO,…

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

Q: For each reaction, predict the sign and find the value of ΔS°:

A: Given:-                     a    3NO2g +H2Ol  →2HNO3l +NOgb   N2g +3F2(g)   →2NF3gc   C6H12O6s +6O2g…

Q: he total number of atoms contained in 2.11 moles of nickel? Ex 1023 atoms B) 3.25 x 1023 atoms C)…

A:

Q: Determine the number of atoms in 63.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Given : Mass of 1 mole of calcium = 40.08 g And mass of calcium = 63.0 g

Q: What are the products of the following reactions?

A:

Q: Determine the number of atoms in 31.0 grams of bromine, Br. (The mass of one mole of bromine is…

A:

Q: In a lab experiment, 7.2 g of Mg reacts with sulfur to form 16.7 g of magnesium sulfide. (a) Use…

A:

Q: Which of these compounds contains the least mass percentage of nitrogen? M(N) = 14 g/mol; M(C) = 12…

A: Pb(N3)2 conatins the least percentage of N  =0.3%

Q: Determine the number of atoms in 81.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Atomic weight of any element contains contain Avogadro number of atoms. Here mass of 1 mole of…

Q: Magnesium oxide contains 60.3 % magnesium by mass. Calculate the mass of magnesium oxide sample if…

A: Given,Mass percent of magnesium in magnesium oxide = 60.3%.Mass of magnesium in sample = 20.5g.

Q: 10.91 9/mol 2) KOHH 3) BeCla )CI = a(35 45)= 0.91 g /mol 5) Big 2CF lir keti l-15-aa

A: 3.Molar mass of BeCl2  Be mass = 9.012 g/mol        Cl mass = 35.5g/mol BeCl2 = 9.012 + (2×35.5) =…

Q: Determine the mass, in grams, of 0.145 moles of Pb (1 mol of Pb has a mass of 207.2 g).Determine the…

A: Given: Moles of Pb = 0.145 mol Molar mass of Pb = 207.2 g/mol Mass of Na = 61.0 g Molar mass of Na =…

Q: A sample of methane, CH4, has a mass of 58.25 g. Calculate the number of methane molecules in the…

A: Given mass of CH4 = 58.25 g Molar mass of CH4 = 16.04 g

Q: Upon decomposition, one sample of magnesium fluoride produces 1.66 kg of magnesium and 2.58 kg of…

A: The values are given as follows:

Q: The formula of cupric sulfate is? A. Cu(SO4)2 B. CuSO3 C. CuSO4 D. Cu(SO3)2 Q2: A silicon chip has a…

A: Cupric means copper in +2 oxidation state and the chemical formula of sulphate ion is SO42-

Q: Determine the number of atoms in 15.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: one mole of any species contains one avagadro number of atoms

Q: Br 1.Mg, Etz0 2. СO2 3. Но он OH Он A B D

A:

Q: 1. How many ATOMS of nitrogen are present in 4.59 moles of nitrogen dioxide ? atoms of nitrogen. 2.…

A: Nitrogen Dioxide = NO2  Moles of NO2 = 4.59 Number of Molecules of NO2 = Moles × 6.022 × 1023 = 4.59…

Q: Give the mass % of carbon in your compound  ___________________18.537956___________ Give the mass %…

A: Molecular formula indicates simple number of each atom in a molecular substance

Q: Balance each reaction and write its reaction quotient, Q꜀:

A:

Q: What percent by mass of iron(II) phosphate is iron? a.46.9 b.73.2% c.24.3% d.33.7%

A: Determination of percentage of iron in iron(II) phosphate

Q: How many moles of zinc ( Zn ) are there in 45.6 grams of zinc? A. 0.697 moles B. 1.39 moles C. 0.349…

A:

Q: 24.3 g He = ____________ mol He

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass.

Q: A sample of C3H8 has 6.32×1024 H atoms. How many carbon atoms does the sample contain? What is the…

A: In a molecule of C3H8, the mole ratio of carbon to hydrogen is 3:8. No of moles of a substance can…

Q: 4. One mole is equivalent to a. 3.75 g Hydrogen c. 16 g Oxygen b. 14 g Carbon d. 190 g Gold 5. What…

A: Answer  4 ) one mole is equivalent to        c) 16g  oxygen  1 mol is  equal to 6.022×1023 (…

Q: Based on the law of conservation of mass, if the total mass of reactants is 22 g, what will the…

A:

Q: 2. What number of gold atoms are in one mole of gold atoms? A 196.97 ) B 6.022 x 10²3 C 79 ) D 1.66…

A: Given,  The number of gold atoms in one mole of gold atoms is:

Q: Upon decomposition, one sample of magnesium fluoride produces 1.65 kg of magnesium and 2.57 kg of…

A: The amount of magnesium produced on the decomposition of sample (I) of MgF2 is 1.65 kg. The amount…

Q: Determine the number of atoms in 53.0 grams of bromine, Br. (The mass of one mole of bromine is…

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.