How To Questions & Answers | Page 17

Decrease in concentration of reactants does not increase the number of reactive particles in a chemical reaction.

To calculate the average speed from a distance-time graph, use the formula $\bar{s} = \frac{\Delta d}{\Delta t} = \frac{d_2 - d_1}{t_2 - t_1}$, where $(t_1, d_1)$ and $(t_2, d_2)$ are two points on the graph.

When butter melts on a hot biscuit, it does so primarily through conduction, where heat is transferred directly from the hot biscuit to the butter through contact:

To convert 25 grams of HCl to moles, use the formula $\text{Moles} = \frac{25 \, \text{g}}{36.5 \, \text{g/mol}} \approx 0.685$ moles.

To combine $\sqrt{27} - \sqrt{3}$, simplify to $2\sqrt{3}$.

The result of 0.7 - 3.4 is -2.7.

At 40℃, the solubility of HCl in water is approximately 667 g/L.

Humans are dependent on biomass for their food supply, as it includes both plant and animal sources essential for nutrition.