Recent content by Tokspor

Hi all, I am completing my AACOMAS at the moment and have a few questions. 1. When filling out transcript information, what should I enter if a course I have taken had lecture and lab components, but this isn't necessarily indicated by the course name, such as "General Biology?" 2. What if I...

Thanks for the responses. I got it now.

A helium-filled balloon (p = 0.5 kg/m^3) is released into the air. The balloon has a diameter of 1 m. Neglecting air resistance, what will be the balloon's initial upward acceleration when released from rest? (density of air is 1.2 kg/m^3) A. 3.65 m/s^2 B. 5.34 m/s^2 C. 13.73 m/s^2 D. 19.45...

This is a PV concept from TBR CBT4 that I am confused about. Let's say you are at some depth in the ocean where the external pressure of the surrounding water is much greater than the pressure inside your lungs. If you hold your breath, why would the volume inside your lungs then decrease? The...

Why is this not the case for upward acceleration in an elevator? The forces along the Y axis would be F(normal) + ma(elevator) = mg. So m(elevator) = F(normal) - mg. However, the correct equation is ma(elevator) = F(normal) - mg. --- The only difference I see is that there is no net upward...

An older gentleman drags a wooden crate (10 kg) out of storage. The 120 N force that he applies on the crate makes an angle of 30 degrees with the horizontal. The coefficient of kinetic friction between the floor and the crate is 0.1. What is the frictional force on the crate? A. 2.4 N B. 3.8 N...

I understand that the calculated amount of ammonia would be lower, but I don't understand why the explanation in the text states that the amount of NaOH used for the titration would be lower. The "(L NaOH)" part of the above equation is determined by how much remaining HCl is left after it...

Hi guys, I have a question from a passage. I'll try to keep this as condensed as possible. Here it is. Passage information: A chemist is trying to determine how much nitrogen is in a certain sample. The nitrogen is in the form of ammonia. 1. The chemist standardizes HCl with a certain...

The attached graph represents the tension in the cable as a pendulum swings through a complete cycle, but I don't understand how it works out like this. The explanation states that at equilibrium, "the tension must offset the entire weight as well as counterbalance the centripetal force." So...

What is the pH of a solution of 25 mL 0.10 M H3CCO2H (pKa = 4.74) after 10 mL of 0.10 M KOH(aq) has been added to it? A. pH = or < 3.74 B. 4.74 > pH > 3.74 C. 5.74 > pH > 4.74 D. pH = or > 5.74 The correct answer is B, and I understand how to estimate this answer. However, the solution to this...

What conclusion can be drawn from the following chart? A and B are radioactively labeled molecules. A. Molecule A is a precursor of molecule B. B. Molecule B is a precursor of molecule A. C. Molecule A and Molecule B are independent of each other. D. Molecule A and Molecule B are formed...

For this question, you don't have to refer to the figure. I just included it in case anyone gets confused about the AC generator being mentioned in the question. I am actually wondering about the relationship between the intensity of a wave to its frequency and power. Which of the following...

Thanks for the response. Yes, this is from Kaplan. I understand your reasoning, but doesn't HCN also have a partial positive charge since it is polar? I thought the polarity of HCN was greater than that of HCF3 since HCN is known to be weakly acidic.

Hi guys, I have a couple of questions about hydrogen bonding. 1. Aside from solely considering the identity of the atom (i.e. F, O, and N) for hydrogen bonding, is a compound such as NH4+ capable of forming hydrogen bonds if the nitrogen does not have a lone pair? 2. The text I am using states...

Yes, thank you for clarifying.