4. A sample of phosphorus weighing 2.50 grams is burned in the presence of oxygen. WhatR the empirical formula of the phosphorus oxide compound if the product has a mass of 5.73 grams? What is the actual molecular formula or the compound if the molar mass is determined to be 285 g/mol? SHO W ALL WORK.

4. A sample of phosphorus weighing 2.50 grams is burned in the presence of oxygen. WhatR the empirical formula of the phosphorus oxide compound if the product has a mass of 5.73 grams? What is the actual molecular formula or the compound if the molar mass is determined to be 285 g/mol? SHO W ALL WORK.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter8: Chemical Composition

Section: Chapter Questions

Problem 66QAP: If 2.50 g of aluminum metal is heated in a stream of fluorine gas, it is found that 5.28 g of...

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When analyzed, an unknown compound gave these experimental results: C, 54.0%; h, 6.00%; and O, 40.0%. Four different students used these values to calculate the empirical formulas shown here. Which answer is correct? Why did some students not get the correct answer? (a) C4H5O2 (b) C5H7O3 (c) C7H10O4 (d) C9H12O5
Tetrodotoxin is a toxic chemical found in fugu pufferfish, a popular but rare delicacy in Japan. This compound has an LD50 (the amount of substance that is lethal to 50.% of a population sample) of 10.g per kg of body mass. Tetrodotoxin is 41.38% carbon by mass, 13.16% nitrogen by mass, and 5.37% hydrogen by mass, with the remaining amount consisting of oxygen. What is the empirical formula of tetrodotoxin? If three molecules of tetrodotoxin have a mass of 1.59 1021 g, what is the molecular formula of tetrodotoxin? What number of molecules of tetrodotoxin would be the LD50 dosage for a person weighing 165 lb?
With the advent of techniques such as scanning tunneling microscopy, it is now possible to write with individual atoms by manipulating and arranging atoms on an atomic surface. a. If an image is prepared by manipulating iron atoms and their total mass is 1.05 1020 g, what number of iron atoms were used? b. If the image is prepared on a platinum surface that is exactly 20 platinum atoms high and 14 platinum atoms wide, what is the mass (grams) of the atomic surface? c. If the atomic surface were changed to ruthenium atoms and the same surface mass as determined in part b is used, what number of ruthenium atoms is needed to construct the surface?
If 2.50 g of aluminum metal is heated in a stream of fluorine gas, it is found that 5.28 g of fluorine will combine with the aluminum. Determine the empirical formula of the compound that results.
When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the product is carbon dioxide. :math>C(s)+O2(g)CO2(g) wever, when the amount of oxygen present during the burning of the carbon is restricted, carbon monoxide is more likely to result. :math>2C(s)+O2(g)CO(g) at mass of each product is expected when a 5.00-g sample of pure carbon is burned under each of these conditions?
can I get more infor on how to find the empirical formula and all the steps in between?
a compound is found to contain 40 % carbon, 6.7 % hydrogen,and 53 % oxygen by weight. What is the empirical formula for thiscompound? (Where the atomic weight of O is 16 and for H is 1 andfor C is 12)
Albuterol sulfate is a white crystalline powder that can be taken in a solid form or mixed into asolution, which can then be nebulized, inhaled, or injected. Albuterol sulfate is used to prevent andtreat wheezing and shortness of breath caused by wheezing problems. We’re going to look only atthe albuterol in this problem, which is an organic compound (MM = 239.35 g mol^-1) composed of65.2% Carbon, 8.86% Hydrogen, 20.0% Oxygen, and the rest Nitrogen by mass. Find the empiricaland molecular formulas for albuterol
Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass % H, and 66.63 mass % O. If its molar mass is between 94 and 98 g/mol, what is its molecular formula?The pseudoformula of the compound is?The formula after the division of the smallest coefficient is?The empirical formula of the compound is?V=The multiple n (n =?
Select the quantity that contains the greater number of atoms in each of the following pairs of substance amounts. Make your selection using the periodic table, but without performing an actual calculation. a) 2.01 m o l o f F e OR 2.00 m o l o f N i [ Select ] ["2.01 mole of Fe", "2.00 mole of Ni"] b) 40.08 g o f C a OR 6.02 × 10 22 a t o m s o f C a
A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this compound. What are the subscripts in the empirical formula of this compound? Enter the subscripts for C, H, and O, respectively, separated by commas (e.g., 5,6,7). Worj this out step by step so i can better understand.
18.4 molmol HgHg Express your answer using three significant figures. How many atoms are in each elemental sample?