Calculate the mass of ammonia (NH,) that contains a million (1.00 x 10°) hydrogen atoms.

Q: A beaker contains 5.75 x 1024 molecules of ethanol. How many moles of ethanol are there in a beaker?

A:

Q: A 1-carat diamond is pure crystaline carbon and has a mass of 0.200 g.Which contains more carbon…

A:

Q: How many H atoms are there in (2.22x10^2) grams of NH3?

A: The answer to the following question is given as:

Q: How many moles of C (to two decimal places) are found in 6.87 x 1024 C atoms?

A: Given,The number of carbon (C) atoms = 6.87 x 1024  C atoms.

Q: What is the mass percentage of carbon in C6H12O3? Express your answer as a percentage (i.e., out of…

A:

Q: Bismuth has a density of 9.808 g/cm3 at 25 degrees Celsius. Calculate the number of atoms of Bismuth…

A: To calculate number of atoms, we first need to calculate number of moles as follows,

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: The empirical formula of propylene is CH2. An experimental determination of the molar mass of…

A: Let the number of carbon atoms be n and the number of hydrogen atoms be 2n in the molecular formula…

Q: What mass of ammonia gas (NH3) contains 2.8*10^24 hydrogen atoms?

A:

Q: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

A: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

Q: A compound containing chromium, Cr; chlorine, Cl; and oxygen, O, is analyzed and found to be 33.6%…

A:

Q: (b) The number of moles of potassium that contains 8.93 × 104 atoms. x 10 mol

A: Given  Atoms of potassium = 8.93 x 1025  To find = number of moles of potassium

Q: Quartz, SiO2, contains 46.7% silicon. What mass of silicon is present in 370 g of quartz?

A: To solve this problem we have to calculate the mass of silicon present in quartz .

Q: Calculate (a) the number of atoms in 1.05 × 10−6 mole of helium and (b) the number of moles of…

A: a.

Q: 4. A chemist has a sample of propanol, C3H;OH, that contains 9.2 x 1024 molecules. What is the mass…

A:

Q: A sample of CO2 has a mass of 50.0 grams. What is the number of molecules of carbon dioxide in the…

A: We know,Number of mole = mass of sample (g)molar mass (gmol-1)and1 mol = 6.022x1023 molecule

Q: Provide the chemical formula (including brackets where appropriate) or systematic name for the…

A: Given : Number of molecules of molecular chlorine = 5 x 1023

Q: A sample of rubbing alcohol solution contains ethanol, C2H5OH(l). If the sample contains 1.25 × 1023…

A: Given;

Q: Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the…

A: Given :-  Mass of Iron present in 2.64 × 1013 red blood cells = 2.90 g  To be calculated :-  Number…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A:

Q: A sample of aluminum contains 2.91 x 1022 atoms of aluminum. What is the mass of this sample?…

A: Number of aluminum atoms = 2.91 x 1022 atomsmass of sample of aluminum = ?Note: Avogadro’s number:…

Q: Determine the mass in grams of 3.75 × 10²¹ atoms of zinc. (The mass of one mole of zinc is 65.39 g.)…

A: Mass of one mole of zinc is 65.39 g. Number of atoms of zinc are 3.75×1021 .

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

Q: Lead is found in Earth’s crust as several different lead ores. Suppose a certain rock is 38.0% PbS…

A:

Q: Calculate the mass of tetraborane (B,H10) that contains a billion (1.00 × 10´) hydrogen atoms.

A: Given : number of hydrogen atoms = 1.00 X 109  Since 1 molecule of B4H10 has 4 B atoms and 10 H…

Q: How many molecules of ethanol (C2H5OH) (the alcohol in alcoholic beverages) are present in 145 mL of…

A: In order to calculate number of molecules of ethanol, first we have to calculate the number of moles…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A:

Q: The acid–base reaction between phosphoric acid, H3PO4, and calcium hydroxide, Ca(OH)2, yields water…

A: In the balance reaction, phosphoric acid, H3PO4, a weak acid, reacts calcium hydroxide, Ca(OH)2 to…

Q: The molecular formula of hexakis(methylthio)benzene is C12H18S6. What is the percentage (by mass) of…

A: We have to calculate the % by mass of C in hexakis(methylthio)benzene .

Q: Determine the number of ethylene molecules, C 2 H 4 , in a 7.3 g sample of ethylene, [ans: 1.6 X 10…

A:

Q: ) Determine the empirical formula of a compound that contains sulfur and oxygen. It has

A: Simplest whole number ratio of constituent atoms within the molecule is called empirical formula…

Q: Dichlorobenzene has a molecular formula of C6H4Cl2 (MW=147.00 g/mole).      What mass of…

A: Given, dichlorobenzene 1.81x1024 total atoms

Q: Arrange the following in order of increasing mass: 1.06 mol SF4; 117 g CH4; 8.7 × 1023 molecules of…

A: The following compounds in order of increasing mass have to be arranged

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

A:

Q: Phosphorus is obtained primarily from ores containing calcium phosphate. If a particular ore…

A: Given information: The mass percent composition of calcium phosphate is 57.8% The amount of…

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.