Chemistry, 14.02.2021 18:40 haileygrace4154
QUESTION 1
At a birthday party, some balloons were filled with hydrogen and others with helium. The hydrogen filled balloons
fook 16 hours to go flat. How long would have taken for the helium filled balloons to go flat?
Answers: 3
Chemistry, 22.06.2019 05:30
Compare and contrast physical changes with chemical changes.
Answers: 1
Chemistry, 22.06.2019 10:50
How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)
Answers: 2
Chemistry, 22.06.2019 18:30
When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?
Answers: 1
Chemistry, 22.06.2019 19:30
Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.
Answers: 1
QUESTION 1
At a birthday party, some balloons were filled with hydrogen and others with helium. The...
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