Answer:
Determining the pH of substances such as purple grape juice and catsup using test strips can be difficult. Why?
Explanation:
Due to the tartaric acid present in these substances, this is a weak acid and is the predominant type of acid in grapes.
pH meters for these substances, measure the total acidity of the sample and convert it into tartaric acid concentration; The test strips are a qualitative method of measurement and their result can give different opinions.
White light is when red, orange, and yellow are absorbed.
Answer:
Niels Bohr
Explanation:
It's been long thought that the atomic model resembles a planet model, that is, it was thought that the nucleus containing neutrons and protons is the central part of the atom and there were electrons in several shells orbiting the nucleus.
This is called a planet model, since it follows the pattern seen in our galaxy: the Sun corresponds to a nucleus and the planets orbiting it are like electrons.
This model was proposed by Niels Bohr in 1915 and is called the Bohr Model. In the end, it was proved that the model wasn't really accurate, since electrons didn't have fixed orbitals but rather probabilities to be found in those orbitals, as well as the fact that electrons were exhibiting the properties of waves.
November 19 ,2016 <3 =) it actually depends if you said yes
Answer: From highest to lowest, we have Iron> water> hydrogen
Explanation: Condensation temperature is temperature at which materials transit from being a vapor to being a solid.The early solar nebula consisted of water, iron and hydrogen, and the temperature in the nebula is said to decrease with distance away from the proto-sun, with heavy elements such as iron whose distance is nearer to the protosun, will have a higher condensation temperature as compared to light elements, such as hydrogen which have lower temperature since gases are further from the sun. water vapour is heavier than hydrogen and therefore will have a higher condensation temperature than hydrogen.
