The activation energy, ea, for the reaction 2 n2o5 (g) latex: \longrightarrow ⟶ 4 no2 (g) + o2 (g) is 22 kj/mol. what is the rate constant at 84.8°c if the rate constant is 1.868 sec-1 at 16.6°c? enter to 3 decimal places. latex: \ln\frac{k2}{k1}=\frac{ea}{r}\left( \frac{1}{t1}\: -\frac{1}{t2}\right)

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?