Skip to main content

Scientific Methods

A
Anonymous

Feb 11, 2025

A .175 M weak acid solution has a pH of 3.25. Calculate the Ka for the acid?

A solution containing 0.175 M of a weak acid has a pH of 3.25. Could you please calculate the acid dissociation constant (Ka) for this acid?
1 answers 12
A
Anonymous

Nov 28, 2024

A bullet can travel at a speed of over 1000m/s.?

A bullet can travel at speeds exceeding 1000 m/s. When a bullet is fired from a rifle, the initial sound produced by the firing is distinct; however, people at a distance may hear a second sound that...
4 answers 43
A
Anonymous

Nov 07, 2024

A certain shade of blue has a frequency of 7.11×10^14 Hz. What is the energy of exactly one photon of…?

A certain shade of blue has a frequency of 7.11 × 10^14 Hz. What is the energy of one photon of this light? I would greatly appreciate it if someone could help me work this out and explain the process...
2 answers 115
A
Anonymous

Nov 26, 2024

A guy named Joe, who is 1.6 meters tall, enters a room in which someone has placed a large convex mirror with?

A man named Joe, who is 1.6 meters tall, enters a room where a large convex mirror has been placed. The mirror has a radius of curvature (R) of 30 meters and has been cut in half, with its axis positi...
4 answers 19
A
Anonymous

Dec 09, 2024

A heterogeneous mixture always contains

What elements are typically found in a heterogeneous mixture?
5 answers 32
M
Mr. Dion Kovacek

Nov 27, 2024

A lithium atom moving at 2.6×105 m/s

I am trying to find the wavelength of a lithium atom moving at a speed of 2.6 × 10^5 m/s. I understand that the equation to use is ( \text{wavelength} = \frac{\text{Planck’s Constant}}{\text{mass} \ti...
4 answers 56
D
Dr. Thad Emmerich

Feb 12, 2025

A primary rainbow is brighter than a secondary rainbow because?

A primary rainbow appears brighter than a secondary rainbow for several reasons. Which of the following explanations is correct? a. The sunlight reaching it is more intense. b. There is one less refle...
2 answers 40
N
Narciso Lueilwitz

Dec 13, 2024

A rapidly spinning paddle wheel raises the temperature of 200mL of water …?

A rapidly spinning paddle wheel raises the temperature of 200 mL of water from 21 degrees Celsius to 25 degrees Celsius. What is the amount of work done in this process, and how much heat is transferr...
3 answers 57
A
Anonymous

Feb 08, 2025

a rigid tank whose volume is unknown is divided into two parts by a partition. THERMODYNAMICS HELP!!!!?

A rigid tank of unknown volume is divided into two parts by a partition. One side of the tank contains an ideal gas at a temperature of 927 degrees Celsius, while the other side is evacuated and has a...
2 answers 46
A
Anonymous

Dec 05, 2024

A scientific theory is an explanation that?

A scientific theory is an explanation that: has been published in a journal or book by a well-known scientist, predicts the outcomes of events consistently, has been rigorously tested through nume...
3 answers 48