Use a Hess cycle to calculate ∆rHƟ for the following reaction using the data provided: NH3(g) + HCl(g) → NH4Cl(s)

substance NH3(g) HCl(g) NH4Cl(s)

∆fHƟ/kJmol-1 -46 -93 -314

Predict the products butane (c4h10) + oxygen —>

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Two nails have identical sizes and shapes. in one nail, 20 percent of the domains are lined up. in the other nail, 80 percent of the domains are lined up. which has stronger magnetic force? first answer gets brainliest!