Exams & Certification
ISOTOPES, IONS, AND ATOMS WORKSHEET 2 Atomic # Mass # #p #e #n charge Symbol 1) 14 16 +4 2) 75 36 42 3) 51 54 79 4) 99 252 96 5) 208 82 Pb6) 52 76 -2 7) 113 48 49 8) 42 98 +6 17 7 N9) 10) 209 83 +5 110 11) […]
ISOTOPES, IONS, AND ATOMS WORKSHEET 2 Atomic # Mass # #p #e #n charge Symbol 1 Read More »
what mass of sodium hydroxide has the same number of oxygen atoms as 130g of barium dihydrogen phosphate The Correct Answer and Explanation is: Step 1: Determine the number of oxygen atoms in 130 g of Ba(H₂PO₄)₂ Step 2: Determine the mass of NaOH that contains 3.139 mol of oxygen atoms Final Answer: 125.54 grams
Complete and balance the following acid/base reactions. Include solubility state as well. Ba(OH)2(aq) + H3PO4(aq) ? NH3(aq) + H2SO4(aq) The Correct Answer and Explanation is: 1. Ba(OH)₂(aq) + H₃PO₄(aq) → ? Step 1: Identify the acid and base Step 2: Write the products of neutralization Acid + Base → Salt + WaterBa(OH)₂ provides 2 OH⁻,
Can molten sulfur conduct electricity? If so, what type of particle carries the current? A. non-conductor B. conductor – electrons carry the current C. conductor – only cations carry the current D. conductor – only anions carry the current E. conductor – cations and anions carry the current The Correct Answer and Explanation is: Correct
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The SI unit of inductance, H (the henry), is equal to the following: (Hint: use the fact that the back emf produced by an inductor is given by emf = L * di/dt) 0 V-A/s; 0 V-s; Vlm; V-s/A. The Correct Answer and Explanation is: Correct Answer:V·s/A (volt-second per ampere) Explanation: The SI unit of
The SI unit of inductance, H (the henry), is equal to the following Read More »
Creating a method object. Define the method object inc_num_kids() for PersonInfo. inc_num_kids increments the member data num_kids. Sample output for the given program with one call to inc_num_kids(): Kids: 0 New baby, kids now: 1 1 class PersonInfo: 2 3 def init(self): 4 self.num_kids = 0 5 6 # FIXME: Write inc_num_kids(self) 7 8 person1
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0 0.89 201 Use the TI-84 calculator to find the area of the shaded region. The Correct Answer and Explanation is: To find the area of the shaded region on a TI-84 calculator, based on the input “0 0.89 201,” we assume that: ✅ Correct Answer: Using the TI-84: 📌 Result: scssCopyEditnormalcdf(0, 0.89, 0, 1)
0 0.89 201 Use the TI-84 calculator to find the area of the shaded region. Read More »
Set up an expression to find the area of the shaded region in Figure below . Then uge your graphing calculator ta evaluate the expression The Correct Answer and Explanation is: Step-by-Step General Approach (Textbook Style) Concept: Area of a Shaded Region Between Curves To find the area of a shaded region between two curves
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An object is moving east and its velocity changes from 65 m/s to 25 m/s in 10 seconds The Correct Answer and Explanation is: To calculate the acceleration of an object, use the formula:Acceleration (a)=Final velocity (v)−Initial velocity (u)Time (t)\text{Acceleration (a)} = \frac{\text{Final velocity (v)} – \text{Initial velocity (u)}}{\text{Time (t)}}Acceleration (a)=Time (t)Final velocity (v)−Initial velocity (u) Given:Initial velocity, u=65 m/su = 65 \, \text{m/s}u=65m/sFinal velocity, v=25 m/sv = 25
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If the velocity of an object changes from 65 m/s to 98 M/s during a time interval of 12 s what is the acceleration of the object The Correct Answer and Explanation is: Answer: To find the acceleration, we use the formula:Acceleration=Final velocity−Initial velocityTime\text{Acceleration} = \frac{{\text{Final velocity} – \text{Initial velocity}}}{{\text{Time}}}Acceleration=TimeFinal velocity−Initial velocity Given: a=98 m/s−65 m/s12 s=33 m/s12 s=2.75 m/s2a = \frac{{98\, \text{m/s} – 65\,