2 years ago

1) 50.0 mL of water is measured out in a graduated cylinder. A rock with the mass of

Chemistry

1 answer:

SashulF [63]2 years ago

7 0

Volume=Rised height-Measured height=60-50=10mL
Mass=20.3g

$\\ \tt\longmapsto Density=\dfrac{Mass}{Volume}$

$\\ \tt\longmapsto Density=\dfrac{20.3}{10}$

$\\ \tt\longmapsto Density=203g/mL$

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Marrrta [24]

Answer: A. 1.60 liters

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44.8 L of $CO_2$ will produce 22.4 L of $O_2$

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Answer:

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2 years ago

What mass of cu(s) is electroplated by running 26.5 a of current through a cu2+(aq) solution for 4.00 h?

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T = 14400 s
26.5 x 14400=381600 C
381600/96500=3.95 Faradays
Cu2+ + 2e- = Cu
3.95 faradays ( 1 mol/ 2 Faradays) = 1.97
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3 years ago