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Question: In the reaction 2H2 + O2 → 2H2O, if 3 moles of O2 are available, how many moles of H2 are ..
Question: What is the unit vector in the direction of v = (3, 4)?Options: (0.6, 0.8)(1, 1)(3, 4)(0, ..
Question: If the vector a = (2, 2) is scaled by a factor of 3, what is the resulting vector?Options:..
Question: If the vector a = (2, -1) and b = (1, 3), what is a + b?Options: (3, 2)(1, 2)(2, 2)(3, 1)C..
Question: What is the cross product of u = (1, 2, 3) and v = (4, 5, 6)?Options: (-3, 6, -3)(0, 0, 0)..
Question: What is the angle between the vectors u = (1, 0) and v = (0, 1)?Options: 0 degrees90 degre..
Question: Which of the following best describes the bond angle in a water molecule?Options: 180 degr..
Question: What is the molecular geometry of the sulfate ion (SO4^2-)?Options: LinearTrigonal planarT..
Question: In which of the following molecules is the central atom sp3 hybridized?Options: BeCl2SiCl4..
Question: What is the mass of 0.75 moles of sulfuric acid (H2SO4)?Options: 75 g98 g147 g50 gCorrect ..
Question: What is the number of atoms in 2 moles of CaCO3?Options: 6.022 x 10^231.2044 x 10^243.011 ..
Question: How many moles are in 50 grams of NaOH?Options: 10.520.25Correct Answer: 0.5Solution: Mola..
Question: If 1 mole of a gas occupies 22.4 L at STP, how many liters will 0.5 moles occupy?Options: ..
Question: What is the scalar product of the vectors (4, -3, 2) and (1, 1, 1)?Options: 3456Correct An..
Question: Calculate the scalar product of the vectors (3, 0, -3) and (1, 2, 1).Options: 0123Correct ..
Question: If G = (1, 1, 1) and H = (2, 2, 2), what is G · H?Options: 3456Correct Answer: 3Solution: ..
Question: Find the scalar product of the vectors (7, 8, 9) and (0, 1, 2).Options: 26272829Correct An..
Question: What is the spin quantum number (m_s) for an electron with a clockwise spin?Options: -1/20..
Question: If an electron has the quantum numbers n=3, l=1, m_l=0, what type of orbital is it in?Opti..
Question: What is the value of the principal quantum number (n) for an electron in the 4s orbital?Op..
Question: If cot θ = 3/4, what is the value of sin θ?Options: 4/53/55/43/4Correct Answer: 4/5Solutio..
Question: What is the value of sin 2θ?Options: 2sin θ cos θsin^2 θ + cos^2 θsin θ + cos θ2sin^2 θCor..
Question: If sin A = 0.6, what is the value of tan A?Options: 0.81.20.751.5Correct Answer: 1.2Soluti..
Question: Which of the following is an identity?Options: sin^2 x + cos^2 x = 1tan x = sin x / cos xs..
Question: If cos A = 1/2, what is the value of A in degrees?Options: 306090120Correct Answer: 30Solu..
Question: If tan θ = 1, what is the value of sin θ?Options: 1/√210√2Correct Answer: 1/√2Solution: Si..
Question: Which of the following statements is true regarding an endothermic reaction?Options: Heat ..
Question: What is the relationship between temperature and the kinetic energy of gas molecules?Optio..
Question: Find the general solution of the equation sin(x) + √3cos(x) = 0.Options: x = (2n+1)π/3x = ..
Question: What type of structure do most synthetic polymers have?Options: LinearBranchedCross-linked..
