What triggers an allergic reaction?

Use Lewis symbols to diagram the reaction

$$\mathrm{NH}_2{ }^{-}+\mathrm{H}^{+} \longrightarrow \mathrm{NH}_3$$

Identify the Lewis acid and Lewis base in the reaction.

A common type of handwarmer contains iron powder that reacts with oxygen to form an oxide of iron. As soon as the handwarmer is exposed to air, the reaction begins and heat is emitted. Is the reaction between the iron and oxygen exothermic or endothermic? Draw an energy diagram showing the relative energies of the reactants and products in the reaction.

Define single replacement reaction.

The units of the rate of reaction are_____.

Hydroxide ion is involved in the mechanism of the following reaction but is not consumed in the overall reaction.

$$\mathrm{OCI}^{-}+\mathrm{I}^{-} \stackrel{\mathrm{OH}^{-}}{\longrightarrow} \mathrm{OI}^{-}+\mathrm{Cl}^{-}$$

(a) From the data given, determine the order of the reaction with respect to $\mathrm{OCl}^{-}, \mathrm{I}^{-}$, and $\mathrm{OH}^{-}$.

Is the overall reaction exothermic or endothermic?

Define the term heat of reaction.

Verify the chain rule for the functions and curves. $f(x, y, z)=x+y^2+z^3 ; \boldsymbol{\sigma}(t)=(\cos t, \sin t, t)$.

What is meant by the rate of a reaction?

What products form in this reaction?

The integrated rate law for the zero-order reaction $\mathrm{A} \longrightarrow \mathrm{B}$ is $[\mathrm{A}]_t=[\mathrm{A}]_0-k t$. (b) Derive an expression for the half-life of the reaction.

Name the product of reaction $\mathrm{A}$.

Determine whether the below-given equation represents a combination reaction, a decomposition reaction, or a combustion reaction:

$$\text{$\mathrm{C}_3 \mathrm{H}_8+5 \mathrm{O}_2 \longrightarrow 3 \mathrm{CO}_2+4 \mathrm{H}_2 \mathrm{O}$}$$