D) CHICO B) homogenized milk D) calcium carbonate 35. Which is a mixture? A) dis
ID: 104934 • Letter: D
Question
D) CHICO B) homogenized milk D) calcium carbonate 35. Which is a mixture? A) distilled water C) glucose patient weighing 96.8 kg has a fever of 39.2°C. The dosage for this fever is 42.0 mg A) 104 mg dministere er kilogram of body weight. What mass of medication should be B) D) 2.30 mg 4.07 x 103 mg C) 0.424 mg 37. The density of an aqueous solution of sucrose is 1.15 g/cm2. What is the volume of 25.0g of this solution? A) 21.7 cm C) 0.0460 cm3 B) 28.8 cm D) 1.15 cm3 38. In terms of atomic structure, elements in the same group (family) have the same number of A) total electrons. C) protons. B) valence electrons. D) neutrons. 39. The isotope S7Fe consists of A) 26p, 30n, 26e C) 57p, 26n, 57e B) 26p,31n, 26e D) 57p, 26n, 26e 40. Which subatomic particle is responsible for the identity of an element? A) neutron C) proton B) positron D) electrorn 41. The formula for aluminum sulfate is A) Als(SO4)2 C) AIS B) Al2(SO4)s D) Al2Ss Final Exam Version B, Chem 121Explanation / Answer
35. The answer is B
36.
for 1 Kg= 42.0mg
for 96.8 Kg = ?
= 42.0x 96.8 = 4065.6 mg= 4.07 x10^3 mg
The answer is D
37.Density = 1.15 g/cm3 = 1.15 g/ml [ 1 cm3= 1 ml]
ie volume of 1.15 gram = 1 ml
volume of 25.0 gram = ?
= 1 x25.0/1.15 = 21.739 ml
volume = 21.7 mL = 21.7 cm3
The answer is A
38. The answer is B
The elements which are present in the same group .,i,e these are contains the same number of valence electrons.
39.
57Fe
atomic number of Fe is 26. ie it contains 26 number of protons and 26 numbner of electrons.
number of neutrons = 57- 26 =31
number of neutrons = 31
The answer is 26p.31n and 26e. the answer is B
40.The answer is C
41.The formula of aluminium sulfate is Al2(SO4)3
Al+3 and SO4-2.
The answer is B.
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