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3 years ago

12

Un lunar de Big Macs apilados llegaría de la tierra a la luna y viceversa ¿cuantas veces? ( la distancia a la luna desde la tier

ra es 364.000 km)

1 answer:

Step2247 [10]3 years ago

3 0

No habla espanol. habla ingles?

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A gas has a volume of 250 mL at 0.29 atm. What will its volume be if the pressure is changed to 0.70

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3 years ago

Which is most reactive out of calcium, potassium, and magnesium?

katen-ka-za [31]

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As we have already discussed, reactivity of alkali metals tends to increase as you go down the group. Therefore, sodium is less reactive with water than is potassium, likewise with the alkaline metals; calcium is more reactive than magnesium

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2 years ago

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nydimaria [60]

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3 years ago

Read 2 more answers

Calculate the number of joules of heat energy needed to increase the temperature of 25.0 g of metal from 21.0 ºC to 80.0 ºC. The

Harman [31]

Answer:

Q = 768.47 J

Explanation:

Given that,

Mass of the metal, m = 25 g

Initial temperature, T₁ = 21.0 ºC

Final temperature, T₂ = 80.0 ºC

The specific heat of the metal is 0.521 J/gºC.

We know that the heat released due to the change in temperature is given by :

$Q=mc\Delta T\\\\=25\times 0.521\times (80-21)\\Q=768.47\ J$

Hence, 768.47 J of heat energy will be needed.

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When the water inside a living cell freezes, the ice crystals damage the cell. The wood frog is a unique creature that can survi

professor190 [17]

But i think its B but i need answer too

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3 years ago