The modern atomic theory agrees with Rutherford's atomic model on ............ the system in which the electrons revolve around the nucleus. (b) that the electron has dual nature. together precisely. (d) that the atom is not uniformly dense.

How many moles of carbon dioxide, collected over water, occupy 125 mL at 732.0 mmHg and \( 23.0^{\circ} \mathrm{C} \) ? (water vapor pressure at \( 23.0^{\circ} \mathrm{C}=21.1 \mathrm{mmHg} \) ) \( (0.00481 \mathrm{~mol}) \)

Calculate the density, in grams per liter, of a gas at STP if 3.04 L of the gas at \( 11.2^{\circ} \mathrm{C} \) and 715.5 mmHg weighs 0.400 g .

Consider the same reaction as in question 6 above: \[ 4 \mathrm{Al}(s)+3 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{Al}_{2} \mathrm{O}_{3}(s) \] How many grams of aluminum oxide will be produced from the complete reaction of 1.27 L of oxygen gas at 783.0 mmHg and \( 30.0^{\circ} \mathrm{C} \) ?

possible Find the hydrogen ion concentration of a solution whose pH is 7.1 . Use the formula \( \mathrm{pH}=-\log \left[\mathrm{H}^{+}\right] \)

How many mg in each ml of a \( 10 \% \) solution of NaCl ?