Perform the calculations required to answer each of the following questions. Pay attention to significant figures. a) What has the greater mass, 3.8 mol of silicon or 5.6 mol of sulphur? b) What is the mass of 3.64 × 1030 atoms of magnesium?

Q: a. What is the mass of 1.49 x 1024 atoms of chlorine? grams b. What is the mass of 9.12 x 1023…

A: a) mass of 1.49×1024 atoms of chlorine.

Q: An unknown compound has the following chemical formula: where x stands for a whole number.…

A: In this question, we have to find the chemical formula of C2Fx. Given: Moles of carbon= 2.71 Moles…

Q: How many iodine atoms are present in 4.10 moles of diatomic iodine? Give your answer in scientific…

A: Given: The number of moles of diatomic iodine=4.10 moles To calculate: The number of iodine atoms.…

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: An unknown compound has the following chemical formula: PtCl, where x stands for a whole number.…

A:

Q: carbon

A:

Q: a. How many ATOMS of boron are present in 7.41 grams of boron trichloride? 3.805x10^21 atoms of…

A: Molecule given = BCl3 1 molecule of BCl3 = 1×6.022 ×1023 Molar mass of BCl3 = 117.3 g/mol 117.3 g of…

Q: A sample of hydrogen sulfide, H2S, had a mass of 51.00 g. Calculate the number of hydrogen sulfide…

A: Given, mass of H2S = 51.00 g number of H2S molecules = ? Note:  molar mass of H2S = 34.1 g/mol

Q: The element silver (Ag) has two naturally occurring isotopes: 109Ag and 107Ag with a mass of 106.905…

A: Average mass = [(mass)1 × % abundance + (mass)2 × % abundance ] / 100   …(1) Average atomic mass…

Q: An unknown compound has the following chemical formula: NO, where x stands for a whole number.…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: A student weighs out 94.53 grams of sodium permanganate, NaMnO4.  How many moles of NaMnO4 is this?…

A: Moles— It is the ratio of given mass of a compound to its molar mass  Mole = given mass / molar mass…

Q: 4) How many atoms of carbon are in 10 grams of carbon dioxide2 5) What is the mass of water if it…

A:

Q: A scientist has two samples of gas: The first sample contains one mole of argon atoms and has a mass…

A: 1 mole of any gas has equal no. Of atoms i.e., avogadro no. of atoms 6.023*1023 atoms. Or Equal…

Q: Aluminum (Al) is element 13 on the periodic table. A sample contains 4.56×1022 atoms of Al.…

A: In this question, we will calculate the amount of Al in grams unit.  You can see below.

Q: If 2.06 mL of seawater contains about 6.91×10-14 moles of gold, how many atoms of gold are in that…

A:

Q: cond A B C D sketch of molecules in it H H C1O H-Ö C нӧ- H H :O: H H H-Ö H-Ö C H C || :0: C O: 010…

A: first, we have to find empirical formula of the given compounds

Q: 5. A bottle of Ibuprofen (C,,H,,O,) contains 1.204 x 1024 molecules. How many grams of ibuprofen are…

A: The molecular weight is 206.29 g/mol means 1 mol of ibuprofen = 206.29 g of ibuprofen

Q: sample contains 52.0 g of elemental phosphorus, P4. Determine the number of moles of P4 and the…

A: Given ,  sample contains 52.0 g of elemental phosphorus, P4. To Determine the number of moles of P4…

Q: An unknown compound contains 53.34% rhodium, 9.338% carbon, and the rest is oxygen. a) If you assume…

A: Given a compound with the composition: Rh = 53.34 % C = 9.338 % O = 100 - (53.34 + 9.338) % = 37.322…

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: An unknown compound has the following chemical formula: Al,Cl where x stands for a whole number.…

A: given formula = Al2Clx

Q: Convert between moles and numbers of atoms. A sample of lithium contains 2.24x1025 Li atoms. What…

A:

Q: Criven below Some Structure Dank the aming from strongest to weakest loose? Explain (9) H₂N (b) (c)…

A:

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: Convert 3.69 moles of Al (OR A l) to grams. Do not type units with your answer. The atomic weight…

A:

Q: Fullerenes are molecules composed of only carbon atoms. One fullerene is C60 a carbon molecule…

A: The number of moles of a substance is defined as the mass of the substance upon its molar mass.

Q: 1. What is the mass of 1.08x1024 atoms of tin ? 2. How many tin atoms are there in 42.0 grams of tin…

A: We simply convert the number of atoms to moles, and from moles to grams. We use Avogadro's number to…

Q: An unknown compound has the following chemical formula: NOX where x stands for a whole number.…

A: Given, An unknown compound has the following chemical formula: NOx moles of oxygen = 2.9 mol moles…

Q: A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,…

A: Mass of compound is,

Q: Suppose you have a sample of sodium weighing 11.50 g. How many atoms of sodium are present in the…

A: Information of question ,

Q: An unknown compound has the following chemical formula: NO, where X stands for a whole number.…

A:

Q: How many moles are there in 189 grams of silver?

A: Given, 1. Mass of silver (Ag) = 189 g     Molar mass of silver = 107.9 g/mol 2. 1 mol of sodium.

Q: An unknown compound has the following chemical formula: P,Cl, where x stands for a whole number.…

A: What is the value of x in PxCl3 =?

Q: In Alice's Wonderland, every element is different from those in our world. There is a pure unknown…

A: to find out, the empirical and molecular formula, first we need to moles of each element present in…

Q: A 1.125-gram piece of magnesium was burned in the presence of oxygen, forming 1.866-grams of the…

A: Given : Mass of magnesium burned = 1.125 g And mass of magnesium oxide formed = 1.866 g

Q: Christina measures out 9.92 grams of Sodium bromide, NaBr. How many moles would this be? (Be sure to…

A: Given, mass of NaBr = 9.92 g molar mass = 102.894 g mol-1 then, determine moles of NaBr =?

Q: . What is the mass (grams) of 2500. carbon atoms?  2.  What is the mass (grams) of 6.52 x 1018…

A:

Q: How many molecules are in 6.26 grams of sulfur dioxide? ______ molecules What is the mass in grams…

A:

Q: An unknown compound has the following chemical formula: where x stands for a whole number.…

A: First find the molar ratio of S and O. S : O = 3.16 : 9.3 Dividing by 3.16 gives: S : O = 1 : 3 This…

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.