Which particles form the nucleus of an atom? a. protons and electrons b. protons and neutrons c. positrons and electrons d. positrons and neutrons

Hypothesis for does water with salt boil faster than plain water

If 50.0 g of N2O4 is introduced into an empty 2.12 L container, what are the partial pressures of NO2 and N2O4 after equilibrium has been achieved at 45∘C?

Which of the following is true about population distribution? A) Regular distribution is the most common type of population distribution. B) Random distribution occurs due to interactions with other individuals.

Given that e = 9.0 v, r = 98 ω and c = 23 μf, how much charge is on the capacitor at time t = 4.0 ms

How long does it take for a purple stem plant to grow

Move deep below the ocean's surface

The Ka of an acid is 1.3 x 10^-7. Based on the Ka and its relationship with Kw, what is the value of Kb? Use KaKb=Kw 1.3 x 10^-21 7.7 x 10^-15 1.3 x 10^-14 7.7 x 10^-8

A covalent bond is best described as Question 1 options: the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion.

From the list below, choose which groups are part of the periodic table

Gypsum is a mineral that is used in the construction industry to make drywall (sheetrock). The chemical formula for this hydrated compound is CaS04 • 2H20. A hydrated compound contains water molecules within its crystalline structure.