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alexandr1967 [171]
2 years ago
5

1. A 5.04 mL sample of Cu has a mass of 45 grams. What is the density of Cu? Show units in final answer

Chemistry
1 answer:
babunello [35]2 years ago
4 0
I think the answer is number D…. I think
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A rubber balloon was filled with helium at 25.0˚C and placed in a beaker of liquid nitrogen at -196.0˚C. The volume of the cold
Ksenya-84 [330]

Answer:

The volume of helium at 25.0 °C is 60.3 cm³.

Explanation:

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\frac{V_{1}}{T_{1}} =\frac{V_{2}}{T_{2}} \\V_{1}=\frac{V_{2}}{T_{2}} \times T_{1}=\frac{15.6cm^{3} }{77.2K} \times 298.2K=60.3cm^{3}

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3 years ago
What color is the start of the rainbow?
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So, it would start off with red.

If you want to know why it starts off the rainbow, its because red has the longest wavelength, compared to the rest of the colors. (sorry I'm rambling, I got excited)

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