100. g Al reacts with excess O2 to produce 150. g Al2O3 according to Calculate the theoretical and percentage yield. 4Al + 302 → 2 Al2O3. 79.4 % 14. Calculate the energy produced by the complete reaction of 150. g H2. 2H2 + O2 → 2H2O + 130KJ 4.83 x 103 kJ 15.
7-7 Geometric Sequences as Exponential Functions Determine whether each sequence is arithmetic, geometric, or neither. Explain. 1. 200, 40, 8, … SOLUTION: Since the ratios are constant, the sequence is geometric. The common ratio is 2.
Zing Substances. For ionizing substances, such as NaCl , 1mosm is 1mmole times the number of ions formed when each molecule dissociates. One mmole of NaCl is 58 mg, but when it dissociates, it yields 1 mmole of Na+ (23mg) and 1mmole of Cl ( 35mg). Therefore , 58 mg of NaCl is 2 mOsm of NaCl is put into a beaker and distilled water added to make 1 liter, the osmolarity is 2mOsm/l. A) How many mosm solute will 1 gram of NaCl yield?
What value will be stored in result in each of the following statements? a) 12 = x + y b) 4 = z * 2 c) 2 = y / x d) 6 = y – z 5. Write a pseudocode statement that declares the variable cost so it can hold a real numbers. Dim cost1 As Double = 0 6. Write pseudocode statement that declares the variable total so it can hold integers.
(2 points) Mg(s) + 2 HCl(aq) → H2(g) + MgCl2(aq) 2. Determine the partial pressure of the hydrogen gas collected in the gas collection tube. (3 points) partial pressure H2 = total pressure - vapor pressure of water = 746mmHg - 19.8mmHg = 726mmHg 3. Calculate the moles of hydrogen gas collected. (4 points) n = 125 4.
Find all the factors of 48. a. 1, 2, 3, 4, 12, 16, 24, 48 b. 1, 2, 3, 4, 6, 8, 11, 12, 16, 24 c. 2, 3, 6, 8, 24 d. 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 10. Prime factor 240. a. 24•3•5 b.
2) Perpendicular to the line x = 6; containing the point (5, 2) A) x = 2 B) y = 2 C) y = 5 D) x = 5 2) List the intercepts for the graph of the equation. 3) y = -2x A) (-2, 0) B) (-2, -2) C) (0, -2) D) (0, 0) 3) List the intercepts of the graph. 4) 4) A) (-2, 0), (0, 2), (2, 0) C) (-2, 0), (2, 0) B) (-2, 0), (0, 4), (2, 0) D) (-4, 0), (0,
Note: I want the direction of the conventional current. 5. Consider the circuit in Figure 3, where R1 = 5.00×102Ω, R2 = 1.00×103Ω, and VB = 10.0V . (a) What is the equivalent resistance Req of the circuit? (b) Solve the circuit.
(n + 8)(2n − 7) 26. (6d2 + 4)(8d − 3) 29. (f − 7)(f + 3) Simplify each product. 30. (c + 4)(c2 − 3c + 5) 32.
The National Association for Stock Car Auto Racing also known as NASCAR was founded in 1948 by Bill France, and now it is an organization that features hundreds of races every year in and around the United States. The top series in Nascar, the Nascar Sprint Cup Series, was previously known as the Nascar Nextel Cup Series. It includes 36 races, more than 45 top Nascar drivers such as Jimmie Jhonson, Jeff Gordon, Kasey Kahne, Tony Stewart, and many more drivers that race every week from February to November on many tracks. There are four types of Nascar tracks: a super speedway, a short track, a standard oval, and a