Description : During photosynthesis a plant uses energy from the sun to break apart glucose water and carbon dioxide. These molecules are used to make sugar to feed the plant and the plant then releases a by-product oxygen that humans breathe. this example shows that?
Last Answer : energy is not created but transferred to different forms (apex gang ;)
Description : The carbon dioxide content in the air that we exhale is about - (1) 4% (2) 8% (3) 12% (4) 16%
Last Answer : (1) 4% Explanation: The air we breathe in contains about 0.04% carbon dioxide. The air we breathe out contains about 4% carbon dioxide. In other words, exhaled air contains about 100 times the concentration of carbon dioxide that inhaled air does.
Last Answer : (1) 4% Explanation: Carbon dioxide exists in Earth's atmosphere in this state, as a trace gas at a concentration of 0.039 per cent by volume. The air we breathe in contains about 0. ... In other words, exhaled air contains about 100 times the concentration of carbon dioxide that inhaled air does.
Description : The carbon dioxide content in the air that we exhale is about? A. 4% (Answer) B. 9% C. 15% D. 16%
Last Answer : A. 4% (Answer)
Description : The carbon dioxide content in the air that we exhale is about (1) 4% (2) 8% (3) 12% (4) 16%
Last Answer : 4%
Description : It's really only occasional
Last Answer : Hard to advise you. You better go to the doctor.
Description : When vinegar and baking soda are mixed together, w gas is formed? w) oxygen x) nitrogen y) carbon dioxide z) hydrogen
Last Answer : ANSWER: Y -- CARBON DIOXIDE
Description : Is the correct equation for the reaction below. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor?
Last Answer : Yes, it is correct.C3H8 + 5 O2 = 3 CO2 + 4 H2O
Description : What is. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor.?
Last Answer : Propane gas is CH3CH2CH3Oxygen gas is O2Carbon dioxide gas is CO2Water vapor is H2OCH3CH2CH3(g) + 5O2(g) ==> 3CO2(g) + 4H2O(g)
Description : Oxygen comes from the environment and carbon dioxide in the end returns to the environment. How do small animals solve the problem of taking away and bringing these molecules from/to their cells? Why isn't that solution possible for larger animals?
Last Answer : Small animals whose tissues make direct contact or are very close to the environment, like cnidarians and poriferans, make gas exchange by diffusion. Larger animals with cells without direct ... the circulatory systems play this role. Breathing Process Review - Image Diversity: respiratory system
Description : In the first stage of photosynthesis, light energy splits water molecules leaving a by-product which is released. This byproduct is: a) hydrogen b) carbon dioxide c) oxygen d) methane
Last Answer : ANSWER: C -- oxygen
Description : Why do we emit Carbon Dioxide when we breathe?
Last Answer : Because the process of breaking down sugar for energy changes oxygen molecules (O2) into carbon dioxide (CO2), and our bodies can’t use carbon dioxide for anything else.
Description : Do cows exhale oxygen?
Last Answer : Yes cows really exhale oxygen, and so do all the mammals including human beings. Cows do not produce oxygen - they are animals, not plants. Cows, like all other animals, use oxygen and exhale ... , so some oxygen that was not absorbed is exhaled. This is why mouth-to-mouth resuscitation works.
Description : An example of major air pollutant is – (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide
Last Answer : (2) Carbon monoxide Explanation: Carbon monoxide (CO) is a colourless, odorless, non-irritating but very poisonous gas which is a product by incomplete combustion of fuel such as natural gas, coal or wood. Vehicular exhaust is a major source of carbon monoxide.
Description : An example of major air pollutant is (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide
Last Answer : Carbon monoxide
Description : Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen
Last Answer : (3) there is a decrease in air pressure on the hills Explanation: Water boils at a lower temperature on top of a mountain because there is less air pressure on the molecules. Water boils when the ... at high elevations foods that are cooked by boiling take a little longer to cook at high elevation.
Description : Water boils at a lower temperature on the hills because (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen
Last Answer : there is a decrease in air pressure on the hills
Description : If you were to exhale smoke into a perfectly air tight container would it eventualy dissapate or would it stay in there forever?
Last Answer : It would eventually condense into a coating of toxic chemicals on the inside of the container.
Description : Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort? (a) One can breathe out air totally without oxygen. (b) One can breathe out air ... ribs at all. (d) The lungs can be made fully empty by forcefully breathing out all air from them
Last Answer : (b) One can breathe out air through Eustachian tube by closing both nose and mouth
Description : The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to ... to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.
Last Answer : Combustion of fossil fuel
Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different
Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different
Description : Green plants in the sea are useful for the respiration of fish because (a) They give out oxygen (b) They give out carbon dioxide (c) The give out oxygen and carbon dioxide simultaneously (d) They take oxygen and give out carbon dioxide
Last Answer : Ans:(a)
Description : It is not advisable to sleep under a tree at night because of the (a) Release of oxygen in lesser amount (b) Release of oxygen in larger amount (c) Release of carbon monoxide (d) Release of carbon dioxide
Last Answer : Ans:(d)
Description : The open "Sigrees or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the ... 3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material
Last Answer : (1) tendency of carbon dioxide to form a layer along with dust smoke Explanation: Burning coal requires oxygen to chemically react. The availability of oxygen is limited in the furnace by several factors ... dioxide from forming layer along with dust smoke so as to keep the supply of oxygen intact.
Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them
Last Answer : (3) Carbon dioxide Explanation: When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) ... , more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.
Description : Yeast is used in making bread because it produces------? A. Carbon dioxide (Answer) B. Sugar C. Bacteria D. Oxygen E. None of these
Last Answer : A. Carbon dioxide (Answer)
Description : On placing an inverted tumbler over a burning candle, the flame extinguishes after some – time . This is because of non –availability of a) oxygen b)water vapour c)carbon dioxide d)wax
Last Answer : a) oxygen
Description : The open "Sigrees" or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the ... 3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material
Last Answer : tendency of carbon dioxide to form a layer along with dust smoke
Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them
Last Answer : Carbon dioxide
Description : The gas inside an electric bulb is (a) air (b) oxygen (c) nitrogen (d) carbon dioxide
Last Answer : Ans:(c)
Description : Of all the gases present in the air, which one of the following is the highest in percentage? (a) Carbon dioxide (b) Hydrogen (c) Nitrogen (d) Oxygen
Description : Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen
Last Answer : (2) Hydrogen Sulphide Explanation: Silver is a fairly stable metal and under normal circumstances does not corrode quickly. However, it is particularly susceptible to the effects of the sulfide ... atmosphere, especially in marine environment, and readily forms a surface tarnish of silver sulphide.
Description : The major constituent of air is – (1) nitrogen (2) carbon dioxide (3) oxygen (4) hydrogen
Last Answer : (1) nitrogen Explanation: Depending on various geographical locationsthese may change, but for the most part air is made up of 78% nitrogen (N2), 21% oxygen (O2), and trace amounts of ... and mostly inert diatomic gas at standard conditions, constituting 78.09% by volume of Earth's atmosphere.
Description : The main reducing agent in iron blast furnace is(A) Carbon dioxide (B) Carbon monoxide (C) Oxygen (D) Air
Last Answer : Option B
Description : Highest percentage of air consists of A. Oxygen B. Carbon dioxide C. Nitrogen D. Argon
Last Answer : C. Nitrogen
Description : High concentration of which gas will not cause air pollution ? a) oxygen b)nitrogen dioxide c)carbon dioxide d)carbon monoxide
Description : Silver gets corroded due to ___ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen
Last Answer : Hydrogen Sulphide
Description : The major constituent of air is (1) nitrogen (2) carbon dioxide (3) oxygen (4) hydrogen
Last Answer : nitrogen
Description : What is the name of the process where plants use the suns energy to turn water and carbon dioxide into food molecules?
Last Answer : The process of photosynthesis.
Description : Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs (a) as bicarbonate ions (b) in the form of dissolved gas molecules (c) by binding to RBC (d) as carbamino - haemoglobin.
Last Answer : (a) as bicarbonate ions
Description : Which of the following molecules is polar? w) Iodine x) Carbon Dioxide y) Carbon Monoxide z) Chlorine
Last Answer : ANSWER: Y -- CARBON MONOXIDE
Description : When quick lime is mixed with Carbon dioxide it turns into?
Last Answer : Milky colour
Description : How are we able to modulate the temperature we exhale?
Last Answer : answer:I think you're spot on target with your theory @uberbatman. I once knew a clown who could do the same thing with his asshole. It was even more pronounced than from mouth, because he could ... even the cling time, depending upon the wind of course. Dude really knew how to clear a room.
Description : Which two gases do you exhale more than you inhale?
Last Answer : Ans. Carbon dioxide and oxygen
Description : what plants exhale at night
Last Answer : carbondioxide
Description : How long does 1m3 of air be needed?
Last Answer : A person at rest consumes about 300 ml of oxygen per minute. So 1 m3 of air would theoretically be enough for about 700 minutes - but only theoretically, because the accumulating CO2 would suffocate (unless you mean breathing from a tank, such as a respirator).
Description : Or does it need nitrogen?
Last Answer : It does not need nitrogen, but the oxygen itself is "toxic", it must be mixed with another gas - for example, deep divers use helium instead of nitrogen (it does not dissolve in the blood and therefore does not pose a risk of Kesson's disease after emergence.