Camphor is reduced to isoborneol by sodium borohydride in ethanol. The instructions for safe disposal of the chemical waste generated by this reaction state that the lids should not be screwed back onto the waste containers. Why should the lids not be put back on the waste containers?

Answers

Answer 1

Answer:

The lids should not be put back on the waste containers because the reaction waste is still generating hydrogen gas that would get trapped in the container.

Explanation:

Camphor is reduced to isoborneol by dissolving camphor in ethanol in erlenmeyer flask . This reaction is followed by addition of excess sodium borohydride in small portions . The reaction mixture is left for 10 minutes and heat is then applied to the reacting mixture. Therefore for safety purpose, during heating, the lids should not be put back on the waste containers because the reaction waste is still generating hydrogen gas that would get trapped in the container.

The reacting mixture is then poured into a beaker of ice water afterwards and Vacuum filtration and blotting dry is used to collect the precipitate instead.

Related Questions

Tema I Hola, ¿qué tal? Vocabulario en acción Los saludos, las presentaciones y las despedidas Presentaciones Drag each word or phrase to the corresponding category: Saludos, Despedidas, or Presentaciones.

Answers

Saludos:

¿Cómo pasa? (Saludos)

¿Cómo estás? (Saludos)

Presentaciones:

Te presento a Irene. (Presentaciones)

Mucho gusto. (Presentaciones)

Despedidas:

Hasta luego. (Despedidas)

Las frases "¿Cómo pasa?" y "¿Cómo estás?" pertenecen a la categoría de saludos, ya que son expresiones comunes para iniciar una conversación y preguntar sobre el estado o bienestar de la otra persona.

Por otro lado, las expresiones "Te presento a Irene" y "Mucho gusto" son utilizadas en el contexto de las presentaciones, donde una persona introduce a otra a un tercero y expresa cordialidad o agrado al conocer a alguien nuevo.

Finalmente, la frase "Hasta luego" se clasifica como una despedida, ya que se utiliza al terminar una conversación o al despedirse temporalmente de alguien, indicando la intención de volver a encontrarse en el futuro.

Full question:

¿_____ pasa? (_____)

Qué & saludos

_____ luego. (_____)

Hasta & despedidas

_____ gusto. (_____)

Mucho & presentaciones

Te _____ a Irene. (_____)

presento & presentaciones

¿_____ estás? (_____)

Cómo & saludos

Fill in the blanks.

VENDEDOR: Buenas tardes.
JUANITA: Hola, ¿me puede ayudar?
VENDEDOR: Sí. ¿Qué le puedo _______ ?
JUANITA: Voy de vacaciones a la playa y necesito un par de sandalias. No pueden ser muy _______ porque no tengo mucho dinero.
VENDEDOR: Muy bien. Yo creo que usted necesita también unos zapatos de_______ . Son más cómodos y si paga en _______ le hacemos una _______ .
JUANITA: ¡Qué bien!
VENDEDOR: ¿Qué _______ calza?
JUANITA: Calzo 7. También quiero comprar un _______ de baño, unas gafas de sol y una _______ blanca.
VENDEDOR: Mire. Tenemos _______ bolsa blanca y es muy elegante.
JUANITA: Gracias por su ayuda, y por la rebaja.

Answers

The blanks in the Spanish conversation are filled with contextual words:

ofrecer, caras, agua, efectivo, rebaja, número, traje, toallaesta.

How to complete the conversation?

The student has been asked to complete the sentences from a dialogue between a vendor and a customer named Juanita. The correct words to fill in the blanks are based on the context of the conversation.

Here are the completed sentences:

VENDEDOR: Buenas tardes. JUANITA: Hola, ¿me puede ayudar? VENDEDOR: Sí. ¿Qué le puedo ofrecer? JUANITA: Voy de vacaciones a la playa y necesito un par de sandalias. No pueden ser muy caras porque no tengo mucho dinero. VENDEDOR: Muy bien. Yo creo que usted necesita también unos zapatos deagua. Son más cómodos y si paga en efectivo le hacemos una rebaja. JUANITA: ¡Qué bien! VENDEDOR: ¿Qué número calza? JUANITA: Calzo 7. También quiero comprar un traje de baño, unas gafas de sol y una toalla blanca. VENDEDOR: Mire. Tenemos esta bolsa blanca y es muy elegante. JUANITA: Gracias por su ayuda, y por la rebaja.

In Freudian theory, which one of the following terms refers to the parts of the mind that are beyond awareness, especially conflicts, impulses, and desires not directly known to a person

Answers

Answer:

dynamic unconscious

Explanation:

Freud describes as a "metapsychological" analysis a precise way of looking at a psychic process, mechanism or phenomenon, considering for its description three aspects: dynamic, topical and economic.

Dynamic: There is a thought that does not penetrate consciousness as intense as it may be however the idea is transferred to the action as soon as the consciousness became aware of its presence. This is that the idea did not become a mere object of consciousness, but that it is effective (it has the power to perform) and efficient (which produced results).

Fill the blank with the preterite form of the verb in parentheses.Nosotros le ___________ toda la información. (decir)

Answers

Nosotros le decimos toda la información.:)

Nosotros le dicimos toda la inmformación

1. Cuando no están juntas, Julia y su mamá tres veces por semana. (llamar) 2. Roberto y Marcela todos los días cuando trabajaban el la misma oficina. (ver) 3. De niños, Eduardo y Carlos a menudo con la tarea. (ayudar) 4. Mi abuela y yo cuando llegué a su casa. (abrazar) 5. Ayer por la tarde José y yo en la gasolinera. (encontrar) 6. Cuando vivíamos en Buenos Aires, en un cibercafé de la avenida 9 de Julio. (encontrar) 7. Ellos se vieron, pero no . ¿Están enojados? (saludar) 8. Mis padres y yo simplemente no . (entender) 9. En su primera cita, Elena y su amigo nunca . (besar) 10. Cuando ellas en la fiesta, Ana se fue inmediatamente. (mirar)

Answers

The correct conjugation of the Reflexive Verbs in parentheses and its translation are in the attached images.

Reflexive Verbs in Spanish.

These verbs are those that indicate that the action falls on the same person who performs it. They are characterized by using reflexive pronouns, which, depending on the personal pronoun to which they refer, are:

Yo: meTú: teUsted: seÉl: seElla: seEllo: seNosotros / Nosotras: nosUstedes: seEllos / Ellas: se

To use the correct reflexive pronoun, you must identify the noun within the sentence, replace it with the appropriate personal pronoun, and use the corresponding reflexive with the help of the guide above.

More information:

https://brainly.com/question/15367247

3) What are three aspects of Ecuadorian culture that are different from the United States?

Answers

daily life moves at a slower pace in Ecuador ( they tend to walk more ) , people / couples are most likely to have more babies in the U.S , and Ecuador is much more conservative than the U.S

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