QUESTION 2
A group of grade 11 students decide to have a party at the end of the school year. In order to decorate the
venue, they fill balloons with hydrogen gas and helium gas. Hydrogen filled balloons took 28.4 hours to go flat. How
long would it have taken the helium filled balloons to go flat?
Answers: 3
Chemistry, 21.06.2019 23:20, anggar20
Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night. when he took it out, its new volume was 322 milliliters, but its pressure was the same. if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is kelvins.
Answers: 2
Chemistry, 22.06.2019 09:00, krystalhurst97
How are isotopes of the same chemical element alike? how are they different?
Answers: 1
Chemistry, 22.06.2019 09:30, raizagisselle1694
Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?
Answers: 3
QUESTION 2
A group of grade 11 students decide to have a party at the end of the school year. In or...
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