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inessss [21]
2 years ago
9

Match the items to use the analogy of time to the vocabulary of chemistry.

Chemistry
2 answers:
antoniya [11.8K]2 years ago
6 0

Answer:

1 year- 1 mole

time in general- amount of matter

1 second- 1 atom/ particle

Svet_ta [14]2 years ago
6 0

Answer:

1 Year => 1 Mole

Time in General => Amount of Matter

1 Second => 1 Atom/Particle

Explanation:

These pairs make the most sense.

Hope it helps!!!

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What is 6.24x10^-4 in regular numbers
igor_vitrenko [27]

Answer:

0.000624

Explanation:

Since your exponent has a negative sign, the number will get smaller.  The decimal point will move to the left as 4 places.

0.624

0.0624

0.00624

0.000624

8 0
3 years ago
Una piedra es lanzada horizontalmente desde la azote de un edificio de 30 metros de altura, con una velocidad de 12 m/s. Hallar
drek231 [11]

Answer: La piedra tarda 2.47 segundos en caer al suelo, y cae a 29.64 metros de la base del edificio.

Explanation:

Ok, tenemos 2 sistemas de ecuaciones para este problema.

Primero, el vertical:

La aceleración es la aceleración gravitatoria, entonces:

a = -9.8m/s^2

para la velocidad podemos integrar sobre el tiempo y obtenemos

v = (-9.8m/s^2)*t + v0

donde v0 es la velocidad inicial, pero la velocidad inicial es solo horizontal, entonces v0 = 0.

Para la posición integramos de vuelta:

p = (1/2)*(-9.8m/s^2)*t^2 + p0

donde p0 es la posición inicial, en este caso, 30m

p = (-4.9m/s^2)*t^2 + 30m

la piedra va a llegar al piso cuando la posición vertical sea igual a 0m

p = 0m =  (-4.9m/s^2)*t^2 + 30m

de aca podemos despejar el tiempo que la piedra tarda en llegar al suelo.

t = √(30/4.9) segundos = 2.47 s.

Ahora, las ecuaciones para el movimiento horizontal son:

Aceleración nula, pues no hay ninguna fuerza actuando en la dirección horizontal.

a = 0

para la velocidad, integramos sobre el tiempo:

v = 0*t + v0 = v0

donde v0 es la velocidad inicial, en este caso, es 12m/s

v = 12m/s

para la posición integramos de vuelta:

p = 12m/s*t + p0

en este caso podemos asumir que estamos inicialmente en el punto x = x0, asi que la posición inicial es p0 = x0.

p = 12m/s*t + x0

entonces, si queremos calcular la distancia entre la base del edificio y el punto donde cae la piedra, tenemos que calcular:

D = p(2.47s) - p(0s)

D = 12m/s*2.47s + x0 - (12m/s*0s + x0)

D = 29.64m

La piedra tarda 2.47 segundos en caer al suelo, y cae a 29.64 metros de la base del edificio.

3 0
3 years ago
Which element have zero valency
choli [55]
The answer is Helium. hope its helpful (:
4 0
3 years ago
How many ml of 0.500 m naoh would be required to exactly neutralize 220.0 ml of 0.150 m hcl?
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8 0
3 years ago
Someone help me please- Im stuck, will give brainliest
Vladimir79 [104]

Answer:

Option b.) Potassium ion, is written correctly.

Explanation:

Hope this helps! :)

7 0
3 years ago
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