Exams & Certification

The tube like digestive system canal that extends from the mouth to the anus is known as___ the canal or the __tract. The Correct Answer and Explanation is : The tubelike digestive system canal that extends from the mouth to the anus is known as the alimentary canal or the gastrointestinal (GI) tract. Explanation: The […]

What is the correct formula for barium hydroxide? a. BaaOH b. Ba(OH)2 c. BaOH d. Ba(OH)3 e. Ba(OH)4 The Correct Answer and Explanation is : The correct formula for barium hydroxide is b. Ba(OH)₂. Explanation: Barium hydroxide is an inorganic compound that consists of barium (Ba) cations and hydroxide (OH) anions. To understand the correct

How much is that gold worth? 65 grams @ $1100 an ounce? 1 pound = 16 ounces = 453.6 grams $1100/16 = $68.75 16+ 453.6 = $7,257.60 (65/453.6)=0.431100 = $473 (6516*1100)/453.6 = $2522.04 The Correct Answer and Explanation is : To find the correct value of 65 grams of gold when the price is $1100

Explain why or why not Determine whether the following statements are true and give an explanation or counterexample.a. All polynomials are rational functions, but not all rationalfunctions are polynomials.b. If f is a linear polynomial, then f ∘ f is a quadratic polynomial.c. If f and g are polynomials, then the degrees of f ∘

Discuss the validity of each statement. If the statement is always true, explain why. If not, give a counter example. 62. Every polynomial function is a rational function. 63. Every rational function is a polynomial function. 64. The graph of every rational function has at least one vertical asymptote. 65. The graph of every exponential

The Lewis formula for fluoromethane, CH3F, hasA) four lone pairs.B) four bonding pairs,C) two bonding pairs and two lone pairs.D) three bonding pairs and one lone pair.E) four bonding pairs and three lone pairs. The Correct Answer and Explanation is : The correct answer is B) four bonding pairs. Explanation: The Lewis structure of fluoromethane

Which of the following is true about the cell nucleus: is surrounded by a double membrane called the nuclear envelope stores the genetic information contains the region of ribosomal RNA synthesis (nucleolus) all of the above The Correct Answer and Explanation is : The correct answer is “all of the above”. Explanation: The cell nucleus

Calculate the solubility of silver phosphate, Ag3PO3 –>3Ag+ + PO33- , in pure water.Ksp = 2.6 x 10-18 correct answer: 1.8 x 10^-5 M please show me step by step, and as detailed as possible, how to solve this problem. the correct answer is already written above ,thank you so much 🙂 The Correct Answer

A Which of the following is a regulatory function of blood?A) delivery of oxygen to body cellsB) maintenance of normal pH in body tissuesC) prevention of blood lossD) transport of metabolic wastes from cells The Correct Answer and Explanation is : The correct answer is B) maintenance of normal pH in body tissues. Explanation: Blood

Financial markets improve economic welfare because: A. they channel funds from savers to investors B. they allow consumers to time their purchases better C. they eliminate the need for financial intermediaries D. both A and B are correct E. all of the above are correct The Correct Answer and Explanation is : The correct answer