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Aloiza [94]
3 years ago
5

What mass of copper is consumed in the reaction with hydrochloric acid if 10.0 g of gas is collected?

Chemistry
1 answer:
brilliants [131]3 years ago
4 0

Answer:

317 g

Explanation:

Cu + 2HCl --> CuCl2 +H2

1      :     2           1 : 1

1 mole of Cu  = 63.5 g

1 mole of  H2 = 2g

1 mole  Cu produces = 1 mole of H2

63.5 g of Cu produces = 2 g of H2

So

10 g of H2 will be produced from =  (63.5/2)*10 = 317 g of Copper

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belka [17]

Answer:

The final temperature of water = 22.1224 °C

Explanation:

<u>Step 1</u> : defien the formula for heat transfer

q = m*c*ΔT

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with c = specific heat ( of water in this case)

with ΔT = difference between final temperature and initial temperature

In this case :

q=366kJ = 366 *10^3 J

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366000 / (480000 * 4.184) = 1.8224 = (T2 - 20.3)

T2 = 20.3 + 1.82 =22.1224 ° C

The final temperature of water = 22.1224 °C

8 0
3 years ago
Can someone explain to me what numbers are acidic, base, or neutral on a ph scale?
EastWind [94]

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