girl-logo

Ask Questions

Chemistry Questions & Answers

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?
Q:
1. A sample of \( \mathrm{CO}_{2}(\mathrm{~s}) \) and a sample of \( \mathrm{CO}_{2} \) (g) differ in their A) chemical compositions B) empirical formulas C) molecular structures D) physical properties 2. A mixture of crystals of salt and sugar is added to water and stirred until all solids have dissolved. Which statement best describes the resulting mixture? A) The mixture is homogeneous and can be separated by filtration. B) The mixture is homogeneous and cannot be Separated by filtration. Depe mixture is heterogeneous and can be D) The mixture is heterogeneous and cannot be separated by filtration.
Q:
2. Una solución acuosa de amoníaco \( \mathrm{NH}_{3} 0,25 \mathrm{M} \) tiene un Kb de \( 1,8 \times 10^{-5} \), presenta disuelta una sal de cloruro de amonio \( \mathrm{NH}_{4} \mathrm{Cl} \) en una concentración de \( 0,45 \mathrm{M} \). a. Calcule el pH teniendo en cuenta ambas sustancias disueltas. b. Calcule el pH suponiendo que solo está presente el amoníaco. c. Escriba una conclusión teniendo en cuenta los resultados de los incisos a y b.
Q:
2. Una solución acuosa de amoníaco \( \mathrm{NH}_{3} 0,25 \mathrm{M} \) tiene un Kb de \( 1,8 \times 10^{-5} \), presenta disuelta una sal de cloruro de amonio \( \mathrm{NH}_{4} \mathrm{Cl} \) en una concentración de \( 0,45 \mathrm{M} \). a. Calcule el pH teniendo en cuenta ambas sustancias disueltas. b. Calcule el pH suponiendo que solo está presente el amoníaco. c. Escriba una conclusión teniendo en cuenta los resultados de los incisos a y b.
11 12 13 14 15 16 17 18 19 20
Ask Tutors
Ask AI
10x
Fastest way to Get Answers & Solutions
By text

Enter your question here…

By image
Re-Upload
Uploaded Files
xxxx.png0%
Submit
📸 STUDY CAN BE A REAL STRUGGLE
Why Not UpStudy It?
Select your plan below
Premium

You can enjoy

  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to answer and
    solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic
  • Limited Solutions