The U. S. Environmental Protection Agency (EPA) setslimits on healthful levels of air pollutants. Themaximum level that the EPA considers safe for lead airpollution is 1.5 μg/m³Part AIf your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lungvolume of 5.40 L.)ΜΕ ΑΣΦ= 2.35 1013?atoms! Check your rounding. Your final answer should be rounded to 2 significant figures in the last step.No credit lost. Try again.

your answer was correct but the number of significant numbers is not correct

Answered: The U. S. Environmental Protection…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter2: Atoms, Molecules, And Ions

Section: Chapter Questions

Problem 2.1QE

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You may have noticed that when water boils, you can see bubbles that rise to the surface of the water. Which of the following is inside these bubbles? Explain. a. air b. hydrogen and oxygen gas c. oxygen gas d. water vapor e. carbon dioxide gas
Calculate the mass of hydrogen in 1.00 kg of ammonia borane. The density of ammonia borane is 0.780 g/cm3.
An element X bas five major isotopes, which are listed below along with their abundances. What is the element? Isotope Percent Natural Abundance Mass (u) 46x 8.00% 45.95232 47x 7.30% 46.951764 48x 73.80% 47.947947 49x 5.50% 48.947841 50x 5.40% 49.944792
A sample of cocaine, C17H21O4N, is diluted with sugar, C12H22O11. When a 1.00-mg sample of this mixture is burned, 1.00 mL of carbon dioxide (d=1.80g/L) is formed. What is the percentage of cocaine in this mixture?
Estimating the radius of a lead atom. (a) You are given a cube of lead that is 1.000 cm on each side. The density of lead is 11.35 g/ cm3. How many atoms of lead are in the sample? (b) Atoms are spherical; therefore, the lead atoms in this sample cannot fill all the available space As an approximation, assume that 60% of the space of the cube is filled with spherical lead atoms. Calculate the volume of one lead atom from this information. From the calculated volume (V) and the formula (4/3) 3 for the volume of a sphere, estimate the radius (r) of a lead atom.
he vigorous reaction between aluminum and iodine gives the balanced equation: :math>2Al(s)+3I2(s)2AlI2(s). mg src=Images/HTML_99425-9-2QAP_image001.jpg alt="" align="top"/> at do the coefficients in this balanced chemical equation tell us about the proportions in which these substances react on a macroscopic (mole) basis?
5 g of anhydrous strontium nitrate is added to a beaker and exposed to air. After several hours the beaker and the contents are weighed. It was found that the mass increased by 1.70 g. Assume that the increase in mass is totally due to the absorption of water by the anhydrous compound. Hoe many moles of water were absorbed by the strontium nitrate?
One mole (molecular equivalent) of gold has a mass of 196.9655 g. One mole of anything equals 6.022 x 1023 items of that thing, so in 1 mole of gold there are 6.022 x 1023 atoms. The diameter of a gold atom is 3.58 x 10-10 m. If a block of gold of a mass of 202.5 g is drawn into a very thin wire of single gold atoms laid end to end, how long would the wire be? Express your answer in kilometers.
If 2 moles of water decomposes, the products that will form are 2 moles of hydrogen gas and one mole of oxygen gas. If a reaction is conducted that consumes 20.0 mL of water, what volume of oxygen gas will be produced (in L)? The density of water is 0.998 g/mL. Assume that 1 mole of oxygen gas has a volume of 22.414 L. Use these atomic masses: H = 1.008 amu; O = 15.999 amu Not these answers: 12.32 12.417 18.015 0.55
In the ammonia (NH3) molecule of the figure, the three hydrogen (H) atoms form an equilateral triangle, with the center of the triangle at distance d = 9.40 x 10-11 m from each hydrogen atom. The nitrogen (N) atom is at the apex of a pyramid, with the three hydrogen atoms forming the base. The nitrogen-to-hydrogen atomic mass ratio is 13.9, and the nitrogen-to-hydrogen distance is L = 10.14 × 10-11 m. N L H d. H (a) What is the x coordinate of the molecule's center of mass? |(No Response) m (b) What is the y coordinate of the molecule's center of mass? (No Response) m
Anhydrous CuSO4 is converted to CuSO4・xH2O to absorb water from certain liquids. What is the value of x if 24.3 g of anhydrous CuSO4 is required to remove 13.7 g of H2O from a gallon of gasoline? Relative atomic masses:H = 1.008; O = 15.999; S = 32.06; Cu = 63.546
Acetic acid (CH3COOH) and trifluoroacetic acid (CF3COOH) are shown by these particulate models. The Ka for trifluoroacetic acid is 104 times greater than acetic acid. Use the models to account for the differences in magnitude for the Ka constant. The yellow atoms are fluorine, the red atoms are oxygen, the black atoms are carbon, and the white atoms are hydrogen. Write the formulas for the conjugate bases for the two structures.The conjugate base of acetic acid The conjugate base of trifluoroacetic acid

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