Topic
Q:
Calculate the pressure of a gas if 15 mol occupies 50 L at \( 35^{\circ} \mathrm{C} \)
Q:
Estequiometría masa-volumen.
Ejemplo No. 1:
¿cuántor litros de amoniaco se producirán con 10 gramos de hidro
\( \frac{3 \mathrm{H}_{2}}{}+\mathrm{N}_{2} \rightarrow \underline{2 \mathrm{NH}_{3}} \)
Q:
20. Which compound is covalent?
Q:
\& Qhé volumen de hidrógeno se producirá en condiciones, namales?
\[ \mathrm{Mg}+2 \mathrm{HCl} \rightarrow \mathrm{MgCl}_{2}+\mathrm{H}_{2} \text { - } \]
Q:
¿qué volumen en condictances normales ocupan 0.5 mary de \( H_{3} \) ?
Q:
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 .
Q:
If \( \mathrm{He}(\mathrm{g}) \) has an average kinetic energy of \( 6650 \mathrm{~J} / \mathrm{mol} \) under certain conditions, what is the root mean square speed of \( \mathrm{Cl}_{2}(\mathrm{~g}) \)
molecules under the same conditions?
root mean square speed:
Q:
Estequiometría masa - volumen:
Eumplo No. I:
\[ 3 \mathrm{H}_{2}+\mathrm{N}_{2} \rightarrow 2 \mathrm{NH}_{3} \]
Q:
pH reading of a glass of liquid is given. Find the hydrogen ion concentration of the liquid. (Give your answers in scientific notation, correct to
a) \( \left[\mathrm{H}^{+}\right]= \)
b) Water: \( \mathrm{pH}=6.8 \)
\( \left[\mathrm{H}^{+}\right]=5.1 \)
Need Help?
Q:
d. A calorimeter has mass 100 g and
specific heat \( 0.1 \mathrm{kcal} / \mathrm{kg}{ }^{\circ} \mathrm{C} \). It
contains 250 gm of liquid at \( 30{ }^{\circ} \mathrm{C} \)
having specific heat of \( 0.4 \mathrm{kcal} / \mathrm{kg} \)
\( { }^{\circ} \mathrm{C} \). If we drop a piece of ice of mass
10 g at 0 . C , What will be the
temperature of the mixture?
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