How do you calculate the weight of air in a balloon?
Calculate the mass of air inside a hot air balloon, given the mass of the air balloon at rest is mb=500 kg. To is the temperature outside the air balloon, Ma is the molar mass of dry air. Here Ti is the temperature inside the balloon.
What instrument is used to measure mass of a balloon?
Scientists measure mass with a balance, such as a triple beam balance or electronic balance. In science, the volume of a liquid might be measured with a graduated cylinder.
How much does air in a balloon weigh?
The weight of an empty balloon: Pretty much nothing (scales say “0”). So here is what they did next: They blew up the balloon and weighted it again. My scales say “2 grams”. Weight of a balloon full of air: Still not much, but more than an empty balloon.
Who said that air has weight?
Aristotle
Who first discovered air?
August 1774: Priestley isolates a new “air,” leading to discovery of oxygen. Born in 1733 in a small town near Leeds, Joseph Priestley was the eldest of six children born to Jonas Priestley, a “dresser and finisher of cloth,” and Mary, the daughter of a local farmer.
How did oxygen get its name?
Oxygen’s third discoverer was Antoine-Laurent de Lavoisier, a French chemist who gave the element its name. The word comes from the Greek “oxy” and “genes,” meaning “acid-forming.” Oxygen has eight total electrons — two orbit the nucleus in the atom’s inner shell and six orbit in the outermost shell.
When was breathing invented?
2.5 billion years ago
What air do we breathe out?
When we take a breath, we pull air into our lungs that contains mostly nitrogen and oxygen. When we exhale, we breathe out mostly carbon dioxide. Why do we do this? Our bodies need oxygen to function.
Do we breathe the same air?
It’s not a guarantee that every single breath you’re going to get one. But, on average, it’s inevitable that you’re going to inhale some of those same molecules over the course of a day. At standard room temperature and pressure, you’re breathing in roughly 25 sextillion molecules every time you take a breath.
How much air do we breathe in a day?
The average adult, when resting, inhales and exhales about 7 or 8 liters of air per minute. That totals about 11,000 liters of air per day. Inhaled air is about 20-percent oxygen.
Can we breathe 100% oxygen?
This damages your eyes so you can’t see properly, and your lungs, so you can’t breathe normally. So breathing pure oxygen is quite dangerous. But breathing pure oxygen can sometimes be necessary. Astronauts and deep-sea scuba divers sometimes breathe pure oxygen because they work in very dangerous places.
Does oxygen kill you over time?
Air with 6% of oxygen or less you will die. Source. On the other hand, if you breathe air above the safe zone you are at risk of oxidized free radicals to attack your cells and tissues that appear as muscle twitches. If you experience long exposure, it can lead to death.