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
AveGali [126]
4 years ago
9

Which formula represents a polar molecule

Chemistry
1 answer:
natita [175]4 years ago
4 0

NH3

well I got this from an old chem test so Im sure its right

You might be interested in
¿Cómo cada una de las siguientes condiciones cambiaría la velocidad de la reacción indicada? Explique
Lubov Fominskaja [6]
Quitar algo de H2 es la respuesta
3 0
3 years ago
A chemistry student needs of acetone for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student dis
galben [10]

Answer:

The answer is "7.90 \ g".

Explanation:

Please finds the complete question in the attached file.

Volume = 10.0 \ mL \\\\Density =0.79 g\  cm^3

\text{Density}=\frac{Mass}{Volume}

Mass = Density \times Volume

         =(0.790 g\ cm^3) \times 10.0 \ mL\\\\=7.90 \ g

The mass of acetone to be weighed is 7.90 \ g

8 0
3 years ago
Which of the following alkyl halides will react fastest with CH3OH in an SN1 mechanism?
yaroslaw [1]

Answer:

IV

Explanation:

The complete question is shown in the image attached.

Let us call to mind the fact  that the SN1 mechanism involves the formation of carbocation in the rate determining step. The order of stability of cabocations is; tertiary > secondary > primary > methyl.

Hence, a tertiary alkyl halide is more likely to undergo nucleophilic substitution reaction by SN1 mechanism since it forms a more stable cabocation in the rate determining step.

Structure IV is a tertiary alkyl halide, hence it is more likely to undergo nucleophilic  substitution reaction by SN1 mechanism.

5 0
3 years ago
Un globo lleno de helio tenia un volumen de 8.5 L en el suelo a 20°C y a una presión de 750 torr. Cuando se le soltó, el globo s
Ray Of Light [21]

Answer:

El volumen del gas era 12.95 L

Explanation:

Se relaciona la presión y el volumen mediante la ley de Boyle, que dice:

“El volumen ocupado por una determinada masa gaseosa a temperatura constante, es inversamente proporcional a la presión”

La ley de Boyle se expresa matemáticamente como:  P*V=k

Por otro lado, la Ley de Charles consiste en la relación que existe entre el volumen y la temperatura absoluta de una cierta cantidad de gas ideal, el cual se mantiene a una presión constante. Esta ley dice que cuando la cantidad de gas y de presión se mantienen constantes, el cociente que existe entre el volumen y la temperatura siempre tendrán el mismo valor:  

\frac{V}{T}=k

Por último, la Ley de Gay Lussac dice que la temperatura absoluta y la presión son directamente proporcionales. Es decir, cuando se mantiene todo lo demás constante, mientras suba la temperatura de un gas subirá también su presión. Y mientras la temperatura del gas baje, lo mismo ocurrirá con la presión:

\frac{P}{T}=k

Combinado las mencionadas tres leyes se obtiene:

\frac{P*V}{T} =k

Cuando se desean estudiar dos diferentes estados, uno inicial y una final de un gas, se puede aplicar:

\frac{P1*V1}{T1} =\frac{P2*V2}{T2}

Recordando que la temperatura debe usarse en grados Kelvin, conoces los siguientes datos:

  • P1: 750 torr
  • V1: 8.5 L
  • T1: 20°C= 293°K (siendo 0°C=273°K)
  • P2: 425 torr
  • V2: ?
  • T2: -20°C= 253 °K

Reemplazando:

\frac{750 torr*8.5 L}{293K} =\frac{425 torr*V2}{253 K}

Resolviendo:

V2=\frac{750 torr*8.5 L}{293K} *\frac{253 K}{425 torr}

V2= 12.95 L

<u><em>El volumen del gas era 12.95 L</em></u>

<u><em></em></u>

5 0
3 years ago
The Law of Conservation of Mass states that mass is neither created nor destroyed during cher
dmitriy555 [2]
The answer is true:)))))))))))))))
8 0
3 years ago
Read 2 more answers
Other questions:
  • Show how to convert the temperature 84.7° C to Kelvin. Please include all steps and label the final
    14·2 answers
  • How are each of these seeds most likely spread from place to place
    6·1 answer
  • Which of the following can take the shape of the container it is in but has a fixed volume? (3 points)
    8·2 answers
  • What type of element looes electrons easily
    6·1 answer
  • In a concentrated solution there is ____.a. no solvent c. a small amount of soluteb. a large amount of solute d. no solute
    10·1 answer
  • PLEASE ANSWER!! BEST ANSWER GETS BRAINLIEST
    8·2 answers
  • 1) How many liters of carbon dioxide gas will be produced at 32°C and 747 mmHg if 1.595 kg of calcium carbonate decomposes? (cal
    15·1 answer
  • 3. Sugar solution(sugar + water) is a homogeneous mixture and sugar can be separated from water through evaporation .Comment.
    13·2 answers
  • Complete the graphic organizer.<br> Basic Parts of an Atom
    15·1 answer
  • Explain why the temperature of distilled water is kept at 37°C ?<br>​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!