1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frutty [35]
4 years ago
10

How many orbitals are there with a principal quantum number of 1?

Chemistry
1 answer:
Tema [17]4 years ago
8 0

Answer:

1 orbal.

Explanation:

There is only one orbital in the n = 1 shell because there is only one way in which a sphere can be oriented in space. The only allowed combination of quantum numbers for which n = 1 is the following. There are four orbitals in the n = 2 shell.

You might be interested in
11. Propane (C3Hg) is a fuel commonly used in gas grills.
Mrac [35]

Answer:

81.71%

Explanation:

One mole of propane contains 3 moles of carbon atoms and 8 moles of hydrogen atoms, as seen from the molecular formula of C_3H_8. In order to calculate the percent of carbon in propane by mass, we need to remember that %w/w (or percent mass) formula states that:

\omega=\frac{m_{component}}{m_{total}}\cdot100\%

That is, we need to divide the mass of the component of interest by the total mass of the compound and multiply by 100 to obtain the percentage.

For simplicity, let's take 1 mole of propane and find the mass of 1 mole (hence, we'll be finding the molar mass of propane). To do that, we add the 3 molar masses of carbon and 8 molar masses of hydrogen to obtain a total of:

M_{C_3H_8}=3M_C+8M_H=3\cdot12.011 \frac{g}{mol}+8\cdot1.00784\frac{g}{mol}=44.096 \frac{g}{mol}

Now that we have the molar mass of propane, we also need to find the total mass of carbon in 1 mole of propane. We know that we have a total of 3 moles of carbon which corresponds to:

M_C=3\cdot12.011 \frac{g}{mol}=36.033 \frac{g}{mol}

Dividing the mass of carbon present by the total mass of the compound will yield the mass percentage as defined by the formula we introduced:

\omega_C=\frac{36.033\frac{g}{mol}}{44.096 \frac{g}{mol}}\cdot 100\%=81.71\%

5 0
3 years ago
Describe the formation of an aqueous libr solution when solid libr dissolves in water
steposvetlana [31]

Answer and Explanation:

The water is a polar solvent which dissolves into the LiBr molecules and converts into Li^+ and Br^- ions far from the solid also into the solution, when they are hydrated.

Now, the complete words are as given below:-

The K^+ and I^- ions at the surface of the solid are pulled into the solution by the polar water molecules, where the hydration process surrounds separate ions with water molecules.

3 0
3 years ago
What is the charge on the Mn ions in Mn2o3? 1+, 2+, 3+,3-,4+?
Allushta [10]
Hey here’s your answer hope this helps you!!!!

6 0
3 years ago
¿Cuáles son las semejanzas y diferencias en las formas de transmisión de enfermedades virales y bacterianas? (Considera tipos de
Mariulka [41]

Answer:

Las semejanzas en la forma de transmisión entre virus y bacterias son:

Ambas transmisiones pueden ser por vectores, estos vectores pueden ser le ser humano e insectos como los artrópodos.

Ambas transmisiones se pueden dar entre humano-humano a causa de que el humano funciona como hospedero de dichos microorganismos.

Ambas transmisiones a veces se suele dar por falta de higiene y cuidado personal.

Los mecanismos de transmisión pueden ser por diferentes vías en ambos casos, es decir por la vía parenteral (inyección o tranfusion de sangre infectada), vertical, o por la vía orofaringea por inhalación o ingestión del microorganismo.

Las diferencias entre la transmisión de los virus y las bacterias son:

Los virus pueden transmitirse de manera masiva y exponencial en poblaciones siendo así mucho mas rápido que las bacterias.

Las bacterias pueden estar inactivas en formas esporuladas en superficies mientras que los virus no presentan este mecanismo de supervivencia a situaciones muy extremas.

Los virus no presentan mecanismos de replicacion propio mientras que las bacterias si, es por eso que el virus solo puede ser multiplicado dentro del organismo humano por medio de la traducción de su ARN o ADN.

Los agentes pueden entrar al organismo por diferentes vías, la vía respiratoria por medio de gotas o inhalación, por medio de la vía digestiva comiendo o bebiendo alimentos contaminados, por medio de la vía ano-mano-boca, es decir  por mala higiene, transmisión sexual,  por medio de la vía vertical que es durante el momento del parto ya que el bebe contacta con la sangre de la madre en el canal de parto y por vía parental que es por inyección del agente por tranfusion mal controlada.

La prevención esta en tomar los recados necesarios como la desinfección de superficies, alimentos, hábitos de higiene y cuidado personal. Ademas de cumplir con el cronograma correspondiente del plan de vacunacion propio de cada país.

Explication:

Los virus y bacterias se diferencian en muchas cosas y aspectos pero lo mas importante es que los virus son proteinas dependientes de un organismo vivo para poder replicarse mientras que las bacterias se pueden replicar por si solas y hasta pueden formar colonias en superficies no vivas o inertes.

6 0
3 years ago
How much Sr(OH)2 • 8 H2O (M = 265.76) is needed to prepare 250.0 mL of solution in which [OH–] = 0.100 M?
attashe74 [19]
The required is the amount of Sr(OH)2·8H2O needed to prepare a solution having a concentration of 0.100 M OH-. We start with the concentration of the hydroxide ion to determine the number of moles hydroxide ion for a given volume of 250.0 mL solution.

0.100 mol/L (0.250 L) = 0.4 mol hydroxide ion needed.

We know that, for every mole of Sr(OH)2·<span>8H2O in solution, two hydroxide ions is formed. Thus,

0.4 mol OH- ( 1 mol </span>Sr(OH)2·<span>8H2O / 2 mol OH-) ( 265.76 g / mol) = 53.152 g 

Thus, 53.152 grams of </span>Sr(OH)2·<span>8H2O is needed to make a solution with 0.100 M OH-.</span>
4 0
3 years ago
Other questions:
  • Can someone please help me
    9·1 answer
  • Determine the number of representative particles in the following: 0.35 mol zinc
    7·1 answer
  • Write the name of any two metalloids ?​
    13·2 answers
  • A gas occupies a volume at 34.2 mL at a temperature of 15.0 C and a pressure of 800.0 torr. What will be the volume of this gas
    10·2 answers
  • Why is it important for DNA to be duplicated before mitosis
    15·1 answer
  • Consider a reaction that has a positive ΔH and a positive ΔS. Which of the following statements is TRUE?A) This reaction will be
    12·1 answer
  • What is the pH of a 3.5 x 10 to the negative 11th M H+ solution
    11·2 answers
  • How many valence electrons does the element with the following electron configuration have? 1s22s22p63s23p64s23d104p4
    9·1 answer
  • What is the volume of 120mg of water
    10·1 answer
  • The same amount of ____ that existed before the change of state
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!