Concept explainers
(a)
Interpretation:
The name of
Concept Introduction:
The
(b)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(c)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(d)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(e)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(f)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(g)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(h)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(i)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(j)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(k)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
(l)
Interpretation:
The name of
Concept Introduction:
The symbols of chemical elements are abbreviated that are used to denote the chemical element. Most of the chemical symbols correspond directly to the name of the element in English, although few are derived from the Latin or German.
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Introduction to General, Organic and Biochemistry
- (c) Argon d) Fluorine 6. The number of nonmetal atoms in Al2(SO4)3 (a) 2 15 (b) (c) 12 (d) 8 7. Which of the following properties of water is not a (a) Water normally boils at 100°Carrow_forward9. What is the amount of oxygen in 200.0 mg of an unknown compound, if 100.0 g of the compound contains 49.93 g O? (A) 0.02497 g (C) 24.98 g (B) 0.09986 g (D) 99.86 g 10. What is the thickness of 5.79-mg of gold leaf evenly spread over an area of 44.6 cm² ? (Density of gold is 19.3 g/cm³.) (A) 6.73 x 10-6 cm (C) 6.73 x 10³ cm (B) 1.20 × 10³ cm (D) 2.78 x 102 cmarrow_forwardCapsaicin, the compound that gives the hot taste to chili peppers, has the formula C18H27NO3.(a) Calculate its molar mass.(b) If you eat 55 mg of capsaicin, what amount (moles) have you consumed?(c) Calculate the mass percent of each element in the compound.(d) What mass of carbon (in milligrams) is there in 55 mg of capsaicin?arrow_forward
- Suppose that mercury forms a perfect spherical droplet with a diameter of 5.0 mm. (a) What is the volume of the mercury droplet in cubic centimeters (cm3)? (b) If the density of mercury is 13.6 g/cm3, calculate the mass of the droplet. (c) How many mercury atoms are present in the droplet? (Volume of sphere = (4/3)3.14r3)arrow_forwardQUESTION 3 Classify the following substances SPECIFICALLY according to type of matter: (a) Air, NaCl, glass, water (b) 12C, 13C, 14C (c) Ce, Gd, Th (d) Ar, Kr, Rn (e) H2, CO2, KBr, C6H1206 (f) NH4, H3O*, PH4 (g) Li, K, Cs (h) Cu2+, Pt2, W4+ (i) Zn, Cd, Hg () Be?*, Sr2*, Ba?+arrow_forwardCapsaicin, the compound that gives the lhot taste to chili peppers, has the formula C18H27NO3.(a) Calculate its molar mass.(b) If you eat 55 mg of capsaicin, what amount (moles) have you consumed?(c) Calculate the mass percent of each element in the compound.(d) What mass of carbon (in milligrams) is there in 55 mg of capsaicin?arrow_forward
- (a) How many elements are found in period 4 in the periodic table? (b) How many elements are found in group 4A (or 14)?arrow_forward(a) Atoms are very small compared to objects on the macroscopic scale. The radius of a nickel atom is 125 pm. What is this value in meters and in centimeters? cm -23 (b) The mass of a single nickel atom is 9.75×10 g. Suppose enough Ni atoms were lined up like beads on a string to span a distance of 31.3 cm (12 inches). How many atoms would be required? atoms What mass in grams of Ni would be used? Could you weigh out this amount of nickel using a typical laboratory balance? (c) Taking the density of nickel metal to be 8.91 g/cm, calculate the mass of metal needed to form a piece of Ni wire with the same length as the distance in b, but with a diameter of 1.00 mm. Hint: The volume of a cylinder is n times its radius squared times its height. (V = nr h) How many nickel atoms does this represent? atomsarrow_forward2.43 g magnesium was completely burnt in oxygen to give magnesium oxide. 2 Mg(s) + O2(g) → 2 MgO(s) (Relative atomic masses: O = 16.0, Mg = 24.3) (a) Draw the electronic diagrams of O2 and MgO, showing electrons in the outermost shell only. (b) (i) How many mole of magnesium was present? (ii) How many mole of oxygen was required to completely react with the amount of magnesium in (i)? (iii) Hence, calculate the amount of oxygen required to completely react with the magnesium. (c) Similarly, calculate the amount of MgO formed.arrow_forward
- In 1961, scientists agreed that the atomic mass unit (amu)would be defined as the mass of an atom of 12C. Before then,it was defined as the average mass of an atom of naturally occurring oxygen (a mixture of 16O, 17O, and 18O). The current atomic mass of oxygen is 15.9994 amu. (a) Did Avogadro’snumber change after the definition of an amu changed and, if so,in what direction? (b) Did the definition of the mole change?(c) Did the mass of a mole of a substance change? (d) Before1961, was Avogadro’s number 6.021023(when considered tothree significant figures), as it is today?arrow_forward(a) Atoms are very small compared to objects on the macroscopic scale. The radius of a aluminum atom is 143 pm. What is this value in meters and in centimeters? m cm (b) The mass of a single aluminum atom is 4.48×10-23 g. Suppose enough Al atoms were lined up like beads on a string to span a distance of 37.7 cm (15 inches). How many atoms would be required? atoms What mass in grams of Al would be used? g Could you weigh out this amount of aluminum using a typical laboratory balance? (c) Taking the density of aluminum metal to be 2.70 g/cm³, calculate the mass of metal needed to form a piece of Al wire with the same length as the distance in b, but with a diameter of 1.00 mm. Hint: The volume of a cylinder is n times its radius squared times its height. (V = n r² h) How many aluminum atoms does this represent? g atomsarrow_forward(a) In the certain hydrated salt MSO3⋅4H2O, the mass percentage of H2O is 44.71%. Identify the element M in the salt? (b) A certain element has two naturally occurring isotopes. The mass of one of the isotopes is 120.904 amu and its natural abundance is 57.21%. The mass of the second isotope is 122.904 amu. Calculate the average atomic mass Write the chemical symbols of the isotopesarrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning