Soaps form foam with hard water or soft water?

Let's break the answer down into three parts: $color (brown) ("First,"$ we're going to convert grams to pounds using this conversion factor: $color(white)(aaaaaaaaaaaaaaaaa$ 1 pound = 453.592 grams $color (purple)...

$"Density, "rho$ $-=$ $"Unit mass"/"Unit Volume"$ Here, both mass and volume were quoted, and we simply take the quotient, knowing that $1*L$ $=$ $1000*cm^3$. Thus $"rho$ $-=$ $(3.15xx10^3g)/(2.50*cancelLxx10^3*cm^3*cancel(L^-1))$ $=$ $??g*cm^-3$

Aluminum is cheap and lightweight, and is the most abundant metal in the Earth's crust; of course it is present as its oxide.

Graphite is a non-molecular species, and consists of an infinite array of carbon atoms, covalently bonded in 2 dimensions. Perhaps, because it is a layered structure, graphite is soft. As...

So, we take the weighted atomic mass of $""^87Rb$ and $""^85Rb$. $(85xx80.2% + 87xx19.8%)"amu" = 85.40$ $"amu"$. Check to see if this atomic mass is close to that listed on...

As you know, the average of an element is calculated by taking the weighted average of the atomic masses of its stable . More specifically, the average atomic...

You pour a bit of cordial, a strongly flavoured sugar syrup, into a glass, and fill the glass with water. You could also fill the glass with sparkling water to...

It should have fairly decent polarizing ability... it has a common charge of $+2$, but on the other hand, it is a large cation relative to the other alkaline earth...

Sodium stearates typically form insoluble calcium and magnesium salts, which you have to scrub off in the bath or toilet. Think about this the next time you clean the bathroom,...

$"8.855 g/L"$ This is just asking you to calculate the new molar (i.e. molar solubility) at a different pressure, i.e. use the . (We'll end up converting...