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3 years ago

True or false. Gas particles never touch each other.

Chemistry

1 answer:

Sati [7]3 years ago

6 0

Answer:

False. In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.

Explanation:

Hope this helps! :)

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I mix 30 grams of a solid, 30 grams of another solid, and 5 milliliter of water together in a sealed container. A chemical react

jok3333 [9.3K]

The same because it cant losers anything

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3 years ago

How many grams of water would require 2200 joules of heat to raise it’s temperature from 34 degrees Celsius to 100 degrees celsi

Arada [10]

Answer:

Mass, m = 7.97 grams

Explanation:

We have,

Initial temperature was 34 degrees Celsius

Heat produced in it is 100 calories of heat

The specific heat capacity of water is 4.18 J/g °C

The heat produced due to change in temperature is given by :

$Q=mc(T_f-T_i)$

m is mass of water in grams

$m=\dfrac{Q}{c(T_f-T_i)}\\\\m=\dfrac{2200}{4.18\times (100-34)}\\\\m=7.97\ g$

So, 7.97 grams of water is required to produce heat of 2200 joules.

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3 years ago

What is the energy of a photon that emits a light of frequency 4.47 x 10^14 Hz?

Anarel [89]

Answer:

2.96 x 10^-19 J

Explanation:

I just took the test

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3 years ago

N yogurt de 125 g muestra en su etiqueta el contenido de algunas de sus sustancias nutricionales:¿Cuál es la composición en tant

poizon [28]

Answer:

Sustancia Masa (g) Composición (% m/m)

Proteínas 5,5 4,4

Azúcares 5,0 4,0

Sodio 0,06 0,048

Potasio 0,15 0,12

Explanation:

Para calcular la composición porcentual en masa de las sustancias debemos usar la siguiente ecuación:

$\%_{m/m} = \frac{m_{s}}{m_{sol}} \times 100$

En donde:

$m_{s}$ es la masa de la sustancia

$m_{sol}$ es la masa del yogurt = 125 g

Para las proteínas:

$\%_{m/m} = \frac{m_{s}}{m_{sol}} \times 100 = \frac{5,5 g}{125 g} \times 100 = 4,4 \%$

Para los azúcares:

$\%_{m/m} = \frac{5,0 g}{125 g} \times 100 = 4,0 \%$

Para el sodio:

$\%_{m/m} = \frac{0,06 g}{125 g} \times 100 = 0,048 \%$

Para el potasio:

$\%_{m/m} = \frac{0,15 g}{125 g} \times 100 = 0,12 \%$

Espero que te sea de utilidad!

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3 years ago

What would be the composition and ph of an ideal buffer prepared from lactic acid (ch3chohco2h), where the hydrogen atom highlig

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Answer:

the answer is 10

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3 years ago