Acids
Which of the following statements is NOT true of an acid?
a) Many acids can be eaten.
b) Acids have a sour taste
c) Acids are found in many household cleaning products like soap
d) Acids can dissolve metals
What is Acids are found in many household cleaning products like soap
Which of the following statements is NOT true of bases?
a)Bases are found in many cleaning supplies
b) Bases react with acids
c) Bases are contained in antacids
d) Bases have a sour taste
Bases have a sour taste
Which of the following statements is(are) true of nuclear reactions?
a) The nucleus of an atom is transformed.
b) The rate of reaction is not affected by changes in temperature and pressure.
c) Great amounts of energy can be produced.
d) All of the above are true.
What is all of the above are true
Which of the following statements is (are) true?
a) Carbon always forms four bonds
b) Organic molecules have covalent bonds.
c) Bonds in organic molecules are formed by the sharing of two or more electrons.
d) All of the above are true.
What is all of the above are true
An Arrhenius acid...
Produces H+ in aqueous solutions
Which of the following would you expect to be a Bronsted-Lowry acid?
a) Fe3+
b) H2SO4
c) NH3
d) NO3–
What is H2SO4
Which of the following would you expect to be a Bronsted-Lowry base?
a) HNO2
b) NH4+
c) Ni2+
d) PO43–
WHat is PO4-3
What is the product formed upon electron capture by titanium-44?
a) Scandium-44
b) Titanium-43
c) Titanium-44
d) Vanadium-44
What is Scandium-44
True or false organic molecules contains zinc?
What is False
The dosage of technetium-99m for myocardial imaging is 280 μCi/kg of body weight. How many mCi should be given to a patient weighing 65 kg? (1 mCi = 1000 μCi)
What is 18 mCi
What is the pH of a 0.10 M HNO3 solution?
Question options:
a) 0.010
b) 0.10
c) 1.0
d) 10.
what is 1.0
What is a basic salt?
a) CsNO3
b) KCl
c) NaF
d) NH4Br
what is NaF
Iodine-131 is used in thyroid therapy and has a half-life of about 8 days. What percentage of iodine-131 remains in a patient 32 days after treatment?
a) 50.0%
b) 25.0%
c) 12.5%
d) 6.25%
What is 6.25%
What is the name of the isomeric cycloalkanes shown on the board?
What is 1,3-dimethylcyclopentane
Which product is formed by gamma emission from niobium-94? The atomic number of niobium is 41.
a. 9440Zr
b.9843Tc
c.9039Y
d.9441Nb
e.9452Mo
what is 9441Nb
Some weak acids and their pKa values are listed below. Which is the strongest acid?
Hint: Strong acids have high Ka values.
a) Acetic acid, pKa = 4.74
b) Ascorbic acid, pKa = 4.10
c) Formic acid, pKa = 3.74
d) Propanoic acid, pKa = 4.89
What is formic acid, pKa=3.74
The normal blood pH is about
what is 7.4
Fluorine-18 undergoes positron emission with a half-life of 1.10 × 102 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body.)
a) 2.11 × 102 minutes
b) 1.74 × 102 minutes
c) 1.32 × 102 minutes
d) 3.00 × 102 minutes
e) 99 minutes
b. 1.74 X 102 minutes
When the chemical equation for the complete combustion of butane is balanced using whole numbers, what is the coefficient in front of the O2?
What is 13
Alkanes are _(soluble/insoluble) in water and _(less dense/ more dense) than water.
What is insoluble; less dense
What is an acidic salt?
a) CsNO3
b) KCl
c) NaF
d) NH4Br
What is NH4Br
Which of the following isotopes can be used to monitor heart, bones, liver, and lunf function?
3-H
99-Tc
131-I
14-C
60-Co
What is 99-Tc
Which of the following radioactive isotopes is useful in the investigation of thyroid problems?
a) gallium-67
b) phosphorus-32
c) iodine-131
d) cerium-141
What is iodine-131
How many structural isomers are possible for the molecular formula, C4H10
What is 2
How many carbon atoms are there in the longest continuous chain of the molecule shown?
(CH3)2CH—(CH2)5—CH3
What is 8