So, litmus paper is a qualitative tool for assessing the acidity or basicity of a substance (usually a solution). In general, blue litmus turns red in the presence of an acid, and red litmus turns blue in the presence of a base. They can't really tell you much more than that.
The solutions that are most likely acids are those that turn blue litmus red <em>and </em>do not evoke a color change in red litmus. A solution that turns red litmus blue <em>or </em>does not evoke a color change in blue litmus is likely not an acid. Using these criteria, solutions 4 and 7 are most likely acids since they both turn blue litmus red (and they cause no color change in red litmus).
The correct answer choice would thus be D.
Answer:
I think that temperature will be cut in half.
When volume increases, pressure decreases. As pressure decreases, temperature decreases. So if you double volume, pressure is halved and so will the temperature. I'm new to this, but I think that's the answer . Tell me if I'm right good luck!
Answer:
Absolutly TRUE... because Frequency is the number of complete waves, or wavelengths, that pass a given point each second. All light travels at the same speed, but each color has a different wavelength and frequency. It is their different wavelengths that cause the different colors of light to separate and become visible
also if so... can i have brainliest... when possible
Answer:
The analogy that best describes is "The planets go around the sun."
Explanation:
The best analogy that suggests that electrons moves round the nucleus in an atom is the Bohr model. According to Neil Bohr, Based on Rutherford's model, he suggested that the extra nuclear part consists of electrons.
These electrons are in the spherical orbits called shells or energy levels around the nucleus.
The nucleus is the tiny massive center of the atom.
Transition of electrons takes place from one level to another.
