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lora16 [44]
3 years ago
15

So before i have to do the science fair i have to write 5 questions that will lead me to a hypothesis my project is which substa

nce melts ice the fastest can you help me with that? Sorry for asking im confused and i cant think of anything!
Chemistry
1 answer:
Gnom [1K]3 years ago
4 0

Answer:

Explanation:

The best bet would just be to use filler questions, after all this is one of the least important parts.

Examples would be: Would blank melt ice faster because blank?

and so on

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For a concentration technique, Stotal is given as 19.31 ± 0.035, Smb is 0.22 ± 0.008, and kA is 0.154 ± 0.007 ppm–1, where Stota
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4 years ago
A tank of gas is found to exert 8.6 atm at 38°C. What would be the required
Vesna [10]

Answer:

36.2 K

Explanation:

Step 1: Given data

  • Initial pressure of the gas (P₁): 8.6 atm
  • Initial temperature of the gas (T₁): 38°C
  • Final pressure of the gas (P₂): 1.0 atm (standard pressure)
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Step 2: Convert T₁ to Kelvin

We will use the following expression.

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We will use Gay Lussac's law.

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T₂ = P₂ × T₁/P₁

T₂ = 1.0 atm × 311 K/8.6 atm = 36.2 K

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