In the Millikan oil droplet experiment, the oil is sprayed from an atomizer into a chamber.The droplets are allowed to pass thro
ugh the hole into the chamber so that their fall can be observed. The top and bottom of the chamber consist of electrically charged plates. The upper plate is positively charged, and the lower plate is negatively charged. X rays are introduced into the chamber so that when they strike the oil droplets, the droplets will acquire one or more negative charges. The electric field (voltage) is applied to the metal plates.Which of the following applies? Can have more than one answer.a. In the presence of an electric field, the negatively charged oil droplet moves freely toward the negatively charged plate.b. In the absence of an electric field, the oil droplet falls freely due to the gravitational force.c. If Fe is greater than Fg , the negatively charged oil droplet will move freely toward the negatively charged plate.d. If Fe is increased until it is equal to Fg , the negatively charged oil droplet will remain stationary.
According to my research A molecule is two or more atoms held together by covalent bonds. An atom is the smallest part of an element. ... A sodium atom has one outer electron, and a carbon atom has four outer electrons.
Molarity is defined as the number of moles of solute in 1 L of solution the mass of Ca(NO₃)₂ present - 8.50 g therefore number of moles of Ca(NO₃)₂ - 8.50 g / 164 g/mol = 0.0518 mol the volume of solution prepared is 755 mL therefore if there are 0.0518 mol in 755 mL then in 1000 mL the number of moles - 0.0518 mol / 0.755 L molarity is therefore - 0.0686 M
all the elements in group 18 are Nobel gases or inert gases . all the elements such as neon , helium, argon etc. ,their outermost shell is completely filled . The noble gases have the largest ionization energies, reflecting their chemical inertness
