Ammonium dichromate is a bright orange, crystalline solid. When heated to a high temperature, one of the decomposition products is a fluffy, dark green solid, called chromium(III) oxide and other materials. What are their respective formulas? Group of answer choices A. NH4(Cr2O7)2, and Cr2O3 B. NH4Cr2O7, and Cr2O3 C. (NH4)2Cr2O7, and Cr2O3 D. NH4CrO4 and Cr3O2

Ammonium dichromate is a bright orange, crystalline solid. When heated to a high temperature, one of the decomposition products is a fluffy, dark green solid, called chromium(III) oxide and other materials. What are their respective formulas? Group of answer choices A. NH4(Cr2O7)2, and Cr2O3 B. NH4Cr2O7, and Cr2O3 C. (NH4)2Cr2O7, and Cr2O3 D. NH4CrO4 and Cr3O2

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter3: Molecules, Moles, And Chemical Equations

Section: Chapter Questions

Problem 3.58PAE: 3.58 Determine the simplest formulas of the following compounds. (a) the food enhancer monosodium...

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3.58 Determine the simplest formulas of the following compounds. (a) the food enhancer monosodium glutamate (MSG), which has the composition 35.51% C, 4.77% H, 37.85% O, 8.29% N, and 13.60% Na; (b) zircon, a diamond-like min- eral, which has the composition 34.91% O, 15.32% Si, and 49.76% Zr; (c) nicotine, which has the composition 74.0% C, 8.65% H, and 17.4% N
Amphetamine, a commonly abused drug, is composed of nine atoms of carbon, 13 atoms of hydrogen, and one atom of nitrogen. The chemical formula of amphetamine is written Group of answer choices C9H13 C9H1N13 C9H13N C13H93N0 C9H13N1
What 19K, 12 Mg, 13Al elements give with goThe formulas of the compounds which are-well shown correctly?39 - A) KO2, MgO, AlO3B) KO, MgO, Al2O3C) K2O, MgO, Al2O3D) K2O2, Mg2O, Al2O3E) KO, MgO2, Al2O3
Calculate the number of atoms of hydrogen (H) in 323 cm3 of the colorless gas ethylene at 0 °C and atmospheric pressure, where its density is 1.25×10-3 g cm-3. The molecular formula of ethylene is C2H4.
Naturally occurring tungsten metal is composed of three stable isotopes: 182 74W, with a natural abundance of 25%; 183 74W, abundance 14%; and 18474W, abundance 31%. Tungsten also has the highest melting point of any element at 3695 K. If a sample of tungsten were held at its melting point for 10 h, would you expect the natural abundances of its isotopes to change? If so, which would increase the most? Which would decrease the most?
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Iron exists in nature as a mixture of predominantly three isotopes: ⁵⁴₂₆Fe (53.94 amu), ⁵⁶₂₆Fe (55.93 amu), and ⁵⁷₂₆Fe (56.94 amu). If the most common isotope, ⁵⁶₂₆Fe, accounts for 91.75% of iron atoms, and the average atomic mass of iron is 55.85 amu, what is the percent abundance of the rarest of these three isotopes of iron?
The lanthanide elements react with oxygen to give compounds of the type Ln2O3 (where Ln stands for a lanthanide element). However, there are interesting exceptions, such as a common oxide of terbium, TbxOy.a) Given that the compound is73.945% Tb, what is its formula?
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Cesium has 39 known isotopes ranging from mass 112 to 151. If a sample of cesium containing only 133Cs (132.905 amu) and 135Cs (134.906 amu) has an average atomic mass of 134.3, what is the percent abundance of 133Cs in the sample?
If Epsom salt, MgSO4· x H2O, is heated to 250 °C, all the water of hydration is lost. Onheating a 1.687-g sample of the hydrate, 0.824 g of MgSO4 remains. How manymolecules of water occur per formula unit of MgSO4?