ASCORERSHUB

2 (2 pts) In the process of dissolving 1 g of sodium perchlorate in water, the sodium perchlorate is referred to as the A) solute. B) solvent. C) solution. D) precipitate E) solid solution. 43 (2 pts) If 1 g of sodium perchlorate is dissolved in water, the water is referred to as the A) solute. B) solvent. C) solution. D) precipitate E) solid s

9/66 Solution Terminology 42 (2 pts) In the process of dissolving 1 g of sodium perchlorate in water, the sodium perchlorate is referred to as the A) solute. B) solvent. C) solution. D) precipitate E) solid solution. 43 (2 pts) If 1 g of sodium perchlorate is dissolved in water, the water is referred to as the A) solute. B) solvent. C) solution. D) precipitate E) solid solution. Physical & Chemical Properties 44 (3 pts) At 25°C, chlorine is a green-yellow gas with a density of 3 ×...

Atomic Number - The number of protons in the nucleus of an atom. The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. Hydrogen = 1, Carbon = 6, Oxygen = 8 (located on top of element of periodic table) Mass Number - # of neurons + # of protons = mass number (located on bottom of periodic table) Isotopes - Let's say an atom is missing a neutron or has an extra neutron. That type of at...

A scientific hypothesis is (select one) a) a tentative explanation for a set of observations that can be tested by further experimentation. b) a statement describing a relationship between phenomena that is always the same under the same conditions. c) a unifying principle that explains a body of facts and relations. d) a model used to visualize the invisible. e) all of the above. 3 (2 pts) Complete the following sentence. A scientific law is (select one) a. a tentative explanation for...

Questions 8-9 refer to the chemical reactions represented below. (A) 2 C6H6 (l) + 15 O (2 g) Æ 12 CO ( ) 2 g) + 6 H2O(l (B) C2H3O2 H O - (aq) + H ( 3O + aq) Æ HC2 3 2 (aq) + H2O(l) (C) 4 H + (aq) + 4 Co ( ( 2+ aq) + O2 g) + 24 NH3 3 6 2 (aq) Æ 4 Co(NH ) 3+ (aq) + 2 H O(l) (D) CaCO3 (s) Æ CaO(s) + CO ( ) 2 g (E) 2 H2O2 (l) Æ O (2 g) + 2 H2O(l) 8. Th

A 0.5 mol sample of He(g) of Ne(g) are placed separately in two 10.0 L rigid containers at 25°C. Each container has a pinhole opening. Which of the gases, , will escape faster through the pinhole and why? (A) He(g) will escape faster because the (A) average speed than the Ne(g) atoms. (B) (B) Ne(g) will escape faster because its initial (C) pressure in the container is higher. (D) (C) Ne(g) will escape faster because the atoms have a higher average kinetic energy than the He(g) atoms. (D)...

Question 1 refer to the following compounds at 25∞C and 1.0 atm. (A) CO2 (B) PbO2 (C) CaO (D) N2O5 (E) Cu2O 1. Contains an element in a +1 oxidation state Questions 4-7 refer to the following species. (A) H2O (B) NH3 (C) BH3 (D) CH4 (E) SiH4 4. Has two lone pairs of electrons 5. Has a central atom with less than an octet of electrons 6. Is predicted to have the largest bond angle 7. Has a trigonal-pyramidal molecular geometry Questions #2 & 3 did not align with the

1) Science is; A) A field of study that requires certain “laws of nature” to be taken on faith B) Both a body of knowledge and an intellectual activity encompassing observation, description, experimentation, and explanation of natural phenomena C) A process that can be applied only within the scientific disciplines, such as biology, chemistry, and

1) Science is; A) A field of study that requires certain “laws of nature” to be taken on faith B) Both a body of knowledge and an intellectual activity encompassing observation, description, experimentation, and explanation of natural phenomena C) A process that can be applied only within the scientific disciplines, such as biology, chemistry, and physics D) The only way to understand the world E) A field of study that determines ethical standards for the human Population 2) What be...

) A primary source of scientific results is ___ A) The news media B) Anecdotes from others C) Articles in peer- reviewed journals D) The internet E) All of the above 2) A guess in a scientific process is called __; a unifying explanation for a range of observations is termed___? A) Theory: Hypothesis B) Theory: Experiment C) Hypothesis: Control D) Hypothesis: Theory E) Experiment: Theory 3) To test the effect of vitamin D on growth, two groups of rats were raised under identical conditi...

1) Which of the following is FALSE about scientific theories? A) They have been thoroughly tested. B) They are developed by inductive reasoning. C) They are used to support observations using deductive reasoning. D) They can be either supported or modified by new observations. E) They are firmly established and cannot be refuted. 2) Which of the following issues would be LEAST helped by application of the scientific method? A) Developing more effective high school curricula B) Evaluating the...

3. What is the least common denominator for 23 4 and 16 2 8 x x  x  ? a. 2(x 4)(x 4) b. 2 4(x 16)  3x(2x 8) c. 2(x  4) d. 2 (x 16)(2x 8) e.   2 2 x  4 54. If 2 2 7 ( ) and ( ) 16 5 4 x f x g x x x x      , find f (x)  g(x) . a. 2 6 28 ( 4)( 4) x x x x     b. 2 6 ( 4)( 4) x x x   c. 2 6 28 ( 4)( 4)( 1) x x x x x    

terms - 12, -3, x(variable), 15y, 11xy, -4x^2, -a, either a single number or variable, or numbers and variables multiplied together. Terms are separated by + or − signs Coefficients - # associated with each of those terms is called coefficient(12, -3, 1,15, 11, -4, -1, 3 expression - adding 1 or more terms together linear equation - equation has =sign. ex of linear eq: 4x+3=11 a linear equation is one that is dependent only on constants and a variable raised to the first power. For exampl...

Set up the multiplication vertically. Remember to insert a place holder of 0 when you multiply 416 by 7. Answer is 29,120. 416 × 70 = A. 29,536 B. 29,120 C. 486 D. 2,912 E. None of these Start by writing four and two fifths as an improper fraction: 4 2/5 = 22/5 Subtract, and then write the answer as a mixed number: 22/5 − 35 = 22 − 3/5 = 19/5 = 3 4/5 4 2/5 − 3/5 = A. 3 4/5 B. 1 1/5 C. 3 1/5 D. 2 1/5 E. None of these The denominator of each fraction is 5. Since the denomina...

) 43.) If the graph of y = f(x) is then which of the following is the graph of y = f(x + 2) – 1 ? a) d) b) e) c) f x (0, 3) (–2, 0) (4, –1) (2, 2) (0, –1) (6, –2) f x (–1, 5) (–3, 2) (3, 1) f x (–2, 2) (–4, –1) (2, –2) f x f x (2, 1) (–4, 0) (–2, –3) f x (6, 1) (0, 0) (2, –3) | 6 + 3x | < 9 is equivalent to a) 1 < x < 1 d) 5 < x < 5 b) 1 < x < –5 e) 5 < x < 1 c) x < 1 – – – If 3 lo...

1. 2x(x 3) (x 1)(x 2)  a. 2 x 7x  2. b. 2 x 5x  2 . c. 2 3x 7x  2. d. 2 3x 5x  2. e. 2 3x 5x 2 . 2. 7 2 2 x x x     a. 7 2 x x   . b. 7 2 x x   . c. 2 29 14 4 x x x   . d. 2 29 14 4 x x x   . e. 7 4 x  . 3. 3 2 x = a. 2 3 x . b. 3 x  . c. 3 2 x . d. 6 x  . e. 6x two vertical asymptotes; one oblique asymptote . b. one ver...

1. 2x(x 3) (x 1)(x 2)  a. 2 x 7x  2. b. 2 x 5x  2 . c. 2 3x 7x  2. d. 2 3x 5x  2. e. 2 3x 5x 2 . 2. 7 2 2 x x x     a. 7 2 x x   . b. 7 2 x x   . c. 2 29 14 4 x x x   . d. 2 29 14 4 x x x   . e. 7 4 x  . 3. 3 2 x = a. 2 3 x . b. 3 x  . c. 3 2 x . d. 6 x  . e. 6x two vertical asymptotes; one oblique asymptote . b. one ver...

1. The groove of the metacarpophalangeal joint can be palpated by having the patient: a. Flex his hand 2. When auscultating breath sounds in a patient who has left sided heart failure, the breath sounds are: a. vesicular with late inspiratory crackles in the dependent portions of the lungs and resonant on percussion 3. The ankle-brachial index is a

In the gastrointestinal tract, smooth muscle is the main muscle type (True/False) - True In our body, approx. 8 liters of intestinal juices are secreted into the GI tract daily, but only 100 ml of water is secreted into the feces. (True/False) - True Normal movement of blood flow in the heart is: left atrium-left ventricle- lung- right atrium-

Filtered wastes from the glomerulus will move in the following order: Bowman's capsule-proximal tubule-distal tubule-loop of henle- collecting duct. (True/False) - False. Bowman's capsule- proximal tubule- loop of henle- distal tubule- collecting duct. Specificity of hormone action in the target cells is determined by receptors. (True/False) - True. The area of nerve axon not wrapped by myelin sheath is called the nodes of Rnavier where action potential is insulated. (True/False) - False. My...