Chemistry, 08.12.2021 02:50 dantelin123
Sara sets up an experiment to collect hydrogen gas in a balloon that is fitted over the top of an
Erlenmeyer flask. She records the atmospheric pressure from the barometer as 98.5kPa. When she
returns after lunch, she notices that that volume of the balloon has noticeably decreased. Initially,
Sara think that some of the hydrogen gas has escaped from the balloon. Sara decides she needs to
collect more data to account for her observations. What data would you advise her to collect and
why? (2 marks)
Answers: 2
Chemistry, 22.06.2019 00:00
The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?
Answers: 2
Chemistry, 22.06.2019 10:30
Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o ā k + o2 (b) na + i2 ā nai (c) cu(no3 )2 + naoh ā cu(oh)2 + nano3 (d) kclo3 ā kcl + o2 (e) ca(no3 )2 + hbr ā cabr2 + hno3 (f) sn(oh)2 ā sno + h2 o (g) p4 + n2 o ā p4 o6 + n2 (h) fe + al2 (so4 )3 ā feso4 + al (i) alcl3 + na2 co3 ā al2 (co3 )3 + nacl (j) c3 h6 + o2 ā co2 + h2 o
Answers: 1
Chemistry, 22.06.2019 21:30
If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted
Answers: 3
Sara sets up an experiment to collect hydrogen gas in a balloon that is fitted over the top of an...
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