2. How many grams are found in a sample of ammonia, NH3 that has 4.59 x 10²5 molecules? A) 4.71 x 105⁰ g B) 4.47 g C) 1.30 x 10³ g D) 76.2 g E) none of the above N=14 H= 3.0 17.0=

Q: )2.709 x 10 to the 23rd Ca+2

A: Given,  0.45 moles CaCO3 1 mole CaCO3 contains 1 mole Ca2+ ions.  0.45 moles CaCO3 contains = 0.45…

Q: In the following How many total atoms of C How many total atoms of O How many total atoms of H 5 CO2…

A: In chemical reaction, stoichiometric coefficient depicts number of atoms of elements in a compound.…

Q: 2) Determine the mass of each sample: a) 1.32 mol carbon tetrafluoride b) 0.555 mol magnesium…

A:

Q: Determine the mass of the sample below. a) 9.11 x 1023 molecules of C15H21N3O15

A: Consider the given information is as follows; Molecules of C15H21N3O15 = 9.11×1023  Mass of…

Q: made-up compound: J2(QZ3)2 Determine the number of molecules of J₂(QZ3)2 in 7.2 grams of J₂(QZ3)2…

A: Given -> Weight of J2(QZ3)2 = 7.2 gram  Atomic mass of J = 19.00 g/mole Atomic mass of Q = 35.00…

Q: Q;) a compound is found to contain 40 % carbon, 6.7 % hydrogen, and 53 % oxygen by weight. What is…

A: Answer:- this question is answered by using the simple concept of calculation of epirical formula…

Q: How many molecules are in each sample? a. 6.5 g H,0 b. 389 g CBr, c. 22.1 g O, d. 19.3 gC,H10

A: a) 2.5g H2O = Mass of H2O = 6.5g Molar mass of H2O = 18g/mol The number of molecules can be…

Q: Upon combustion, an unknown compound containing only carbon and hydrogen produces 82.06 g carbon…

A: Given that the hydrocarbon contains only C and H. mass of CO2 produced = 82.06 g mass of H2O…

Q: Consider the following made-up compound: (Z3J)2Q3 Determine the number of moles of Z in 1.75 moles…

A: Given -> Mole of (Z3J)2Q3 = 1.75 mole

Q: Which sample contains the greatest number of chlorine atoms? O 2.4 mol HCI O 0.2 mol PC16 O 0.65 mol…

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

Q: 15 g N2O has how many atoms of nitrogen?

A:

Q: A sample of propane, C3H8C3H8, contains 16.1 molesmoles of carbon atoms. How many total moles of…

A: Given, the sample of propane (C3H8) contains 16.1 moles of carbon atoms. In propane, the carbon…

Q: Consider a sample of carbon tetrafluoride that contains 1.09 × 10²⁴ atoms of fluorine. 1.) Using…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: 1.aDo a mole of Na and a mole of NaCl contain the same number of Na atoms ? Explain your answer .…

A: Same moles of any particle will have same number of that particles .

Q: How many atoms of oxygen are in 25 g of SO₂? a) 2.3 x 1022 Ob) 6.8 x 1023 Oc) 1.4 x 1023 d) 4.6 x…

A:

Q: 8. (The density of liquid mercury at room temperature is 13.545 g/cm³. How many Hg atoms are present…

A: Given,Density of mercury ( Hg ) = 13.545 g/cm3Volume of mercury ( Hg ) = 1.00 gallonMolar mass of Hg…

Q: How many atoms are in 5.80 moles of H O 6.02 x 1023 O 1.03 x 1023 4.00 3.49 × 1024 O

A: Mole can be defines as a standard unit for measuring large quantities of very small entities such as…

Q: ould someone mind double checking my review on atoms and moles… I just want to make sure I am…

A: A mole is a unit of measurement of a substance.  1 mole at STP  of any gas occupies 22.4 litres  and…

Q: Convert 28.50 grams of Fe (OR F e) to moles. Do not type units with your answer. The atomic weight…

A: Given : mass of Fe = 28.50 g

Q: How many atoms are in 1 mole of calcium?

A: 1 mol contains atom equal to Avagadro number.

Q: Mass of Sample Moles of Sample Molecules in Sample Total Atoms in Sample 4.40 g C6H6…

A:

Q: Calculate the mass of CBr4 a) 320 g b) 332 g c) 92 g d) none of these

A: Mass of C = 12g/mol  Mass of Br = 80g/mol

Q: 6. A sample of Magnesium Chloride (MgCl₂) has a mass of 12.94 g. How many atoms of Clare in the…

A: Given = Mass of MgCl2 = 12.94 g

Q: 3) How many atoms are contained in 0.98 moles of iron (Fe)? 4) How many moles of cesium are in 66.45…

A: For question 3, we have to find the number of atoms in 0.98 moles of iron. For question 4, we have…

Q: An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 7.50 g of…

A:

Q: How many moles are there in 1.81 x 1024 molecules of ammonia? A) 1.00 moles B) 5.00 moles C) 7.00…

A:

Q: What is the molar mass of the solid C 6H8 N4 O 4?     2. The following  18  O  -2. How many…

A:

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: If a sample of ethanol has a mass of 1.34 x 104 mg, d) How many C atoms are in the sample? e) How…

A: Stoichiometry involves the calculation of concentration of solutions in the given conditions of…

Q: Consider a 10.1 g sample of the compound cesium phosphate. a) What is the chemical formula for…

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

Q: How many Cl atoms are there in 50 g of AIC13 (Molar mass: 133.34 g/mol) ? OA 4.64 x 1026 O B. 5.00 x…

A: Given, Mass of AlCl3 = 50g Molar mass of AlCl3 = 133.34 g/mol Moles of AlCl3 = 50 g133.34 g/mol =…

Q: What is the formula weight of magnesium hydroxide, an ingredient found in antacid? A. 72.0 u C. 58.3…

A: The mass of one formula unit of a substance is known as formula mass. The formula mass of the sum of…

Q: Using the Planet Mayedup Periodic Table and the formula Ct(Hnls3)2 determine the molar mass of the…

A: A hypothetical question based on periodic table, which is to be accomplished.

Q: having a hard time with match the formula am i correct can some explain whatbi dis wrong if i was…

A:

Q: How many atoms of Na are in 45.0 g of Na2CO3  ( Na2CO3 = 105.99 g/mol) Your answer should be…

A: In this question, first of all number of moles of Na2CO3 is determined and then with the help of…

Q: convert 1.89 • 1024 atoms of carbon to moles of carbon

A: Calculation of moles of Carbon :

Q: Part A Calculate the percentage by mass of the indicated element in the following compounds.…

A:

Q: Which of the following contains the most atoms? 24.305g Mg 39.098g K 9.0122g Be 21.62g B

A: One mole of a substance contains 6.022×1023 atoms and the number of moles of a substance can be…

Q: A 0.479 g sample of nitrogen, oxygen or neon gas occupies a volume of 265 mL at 157 kPa and 20°C.…

A:

Q: How many atoms of oxygen are in a 0.18 mol sample of CACO3? 3.3E23 3.5 56 3.30E+24 3.50E+27

A:

Q: 3) How many moles are there in 2.3 x 1044 atoms of sulfur? 23 4) How many grams are there in 7.40 x…

A: Applying mole concept and avogadro concept of atom/molecules.

Q: How many moles of He are 221,000 He atoms?

A:

Q: Covert 2.34 x 10^24 molecules of N2 to moles

A:

Q: How many moles of calcium atoms do you have if you have 4.69 x 10 atoms of calcium. (The mass of one…

A: Given, number of atoms = 4.69*1021atoms

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.