Chemistry, 22.10.2020 01:01, DESI111609
The normal respiratory rate for human being is 15 breaths per minute. if the average volume of air for each breath is 505 cm³ at 20°C and 99.5 kPa, what volume of air, in cubic meters and at STP, does an individual breathe in one day? (hint: 1 m³= 1,000,000 cm³)
Answers: 3
Chemistry, 22.06.2019 01:00, XxrazorxX11
How can you use chemical equations to predict the products of the reaction you can carry out?
Answers: 1
Chemistry, 22.06.2019 12:00, sophiaa23
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
Chemistry, 23.06.2019 02:30, puppylover72
Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .
Answers: 2
The normal respiratory rate for human being is 15 breaths per minute. if the average volume of air f...
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