How many chlorine atoms are in 4.3 grams of phosphorous trichloride? If sodium and potassium are both ions with a positive charge, how can they make something negative? Why does an electron cloud want to have a stable amount of electrons per energy level?
How many protons does iodine have? Is table salt a compound? How is sodium formed? How is a compound similar to a homogeneous mixture? What state of matter is iodine? How many valence electrons does iodine have? How did early humans get iodine?
Moles are a unit of measurement of chemical compounds. Just like how physical quantities, such as distance, mass, time etc. have measurement units (meters, grams, seconds respectively), similarly, chemicals are measured in moles. In short, you could say that a “mole” is the unit of amoun...
Commercialization is widely believed to be achievable for metal halide perovskite solar cells with high efficiency and low fabrication cost. However, stability remains a key obstacle for them to compete with established photovoltaic technologies. The pho
While explaining why CCl4 cannot be hydrolyzed, we say carbon atom doesn't have any d-orbitals and therefore a water molecule (lone pair electrons of O atom)cannot form coordinate bond with carbon. So, CCl4 cannot be hydrolyzed. In NCl3, nitrogen also does not have any d-orbital. ...
First, because nickel always dissolves in the "+2" oxidation state (Ni++), whereas many other metals like copper and zinc can dissolve in either the "+1" or "+2" state and add some confusion; secondly because chloride is a simple one-atom anion whereas many anions like sulphate or ...
nonmetal is an ionic bond. In an ionic bond, the electrons are transferred. Since many of the nonmetals have a high electronegativity, and the metals in groups 1 and 2 have very low electronegativities, such elements combine to form an ionic bond. An example is potassium chloride, or KCl...
The biological effects of high-gradient magnetic fields (HGMFs) have steadily gained the increased attention of researchers from different disciplines, such as cell biology, cell therapy, targeted stem cell delivery and nanomedicine. We present a theoret
For example, given the reaction N2 + 3 H2 ---> 2 NH3 how many moles of NH3 will be produced given 3.00 grams of N2 reacting with sufficient H2? In this example, sufficient H2 means that there is enough available and you don’t have to take it into account to solve the problem. Fi...
Give the electron configuration for potassium. How many valence electrons does it have? What is the ground-state electron configuration of the sulfide ion S_2? Write the complete electron configuration for the common monatomic ion formed by the element bromine, Br. ...