This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si₂05) (OH)2 An analytical chemist has determined by measurements that there are 67.2 moles of oxygen in a sample of talc. How many moles of hydrogen are in the sample? Round your answer to 3 significant digits. mol X S

This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si₂05) (OH)2 An analytical chemist has determined by measurements that there are 67.2 moles of oxygen in a sample of talc. How many moles of hydrogen are in the sample? Round your answer to 3 significant digits. mol X S

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter2: Atoms Molecules And Ions

Section: Chapter Questions

Problem 125GQ: Saccharin, a molecular model of which is shown below, is more than 300 times sweeter than sugar. It...

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Saccharin, a molecular model of which is shown below, is more than 300 times sweeter than sugar. It was first made in 1807, when it was common practice for chemists to record the taste of any new substances they synthesized. (a) Write the molecular formula for the compound, and draw its structural formula. (S atoms are yellow.) (b) If you ingest 125 mg of saccharin, what amount (moles) of saccharin have you ingested? (c) What mass of sulfur is contained in 125 mg of saccharin?
Calculate the mass of nickel that could be obtained from 3.45x1025 f. units of Nickel (III) oxide.
2.845 multiplied by 10E12 potassium ions equals how many moles in potassium ions
Vitamin C has a formula of C6H8O6, calculate the number of vitamin molecules present in a 0.250g of pure vitamin C
A given sample of a xenon fluoride compound contains molecules of a single type XeFn , where n is some whole number. Given that 8 x 1020 molecules of XeFn weigh 0.225g, calculate n.
Hydrogen gas burns in the presence of oxygen gas to produce water vapor: 2 H2 (g) + O2 (g) ---> 2H2O (g) How many grams of water can be produced if you only have unlimited amounts of hydrogen gas but only have 150.0g of oxygen gas?
Dichlorobenzene has a molecular formula of C6H4Cl2 (MW=147.00 g/mole). What mass of dichlorobenzene contains 1.81x1024 total atoms?
Brasses are alloys in which copper is the primary component and zinc is the second most abundant element. Naval brass, which has a high resistance to salt corrosion is 60.0% Cu, 39.25% Zn, and 0.75% Sn. How many moles of zinc are present in a 72.1 gram sample of naval brass? Report your answer with three significant figures.
How many kilograms of AICI3 can be made from 150 kg of chlorine
Rubbing alcohol often contains propanol, C3H7OH(l). Suppose that you have an 85.9 g sample of propanol.
The compound 2,3−dimercaptopropanol (HSCH2CHSHCH2OH), commonly known as British anti-Lewisite (BAL), was developed during World War I as an antidote to arsenic-containing poison gas. (a) If each BAL molecule binds one arsenic (As) atom, how many As atoms can be removed by 3.6 g of BAL? Enter your answer in scientific notation. (b) BAL can also be used to remove poisonous heavy metals like mercury (Hg) and lead (Pb). If each BAL binds one Hg atom, calculate the mass percent of Hg in a BAL-Hg complex. (An H atom is removed when a BAL molecule binds an Hg atom.)mass %
In thecrystalline form of copper(II)chloride, two water molecules are integrated as part of the lattice structure perunit of copper(II)chloride. Thus, the full name of the substance we will be using is copper(II)chloride dihydrate, and the formula is written CuCl2∙2H2O. Calculate the molar mass of copper(II)chloride dihydrate.