Determining nitrogen balance in the clinical setting can be very valuable. To determine a client’s state of nitrogen balance, a 24-hour urinary urea nitrogen collection is done. What do you also need to do?
Answers
Answer:
We also need the nitrogen intake
Explanation:
The nitrogen balance is the difference between the nitrogen intake and nitrogen excreted. If this calculation is positive, the body grow; if it is negative, the body is decreased.
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A propane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. What condition of the gas remains constant
Answers
N2 + 3H2 -> 2NH3 (Always check if it is balanced).
Ok so we have 2kg of hydrogen conver this to grams and then to moles.
2kg -> 2000g
2000g divide by R.M.M of H2
R.M.M
2H - 2 * 1 -> 2
2000/2 - 1000 moles.
Look at the ratio of H2 to 2NH3.
We see that we get 2NH3 for every H2 therefore the ratio is 1:2.
This means that we HAVE 2000 moles of 2NH3.
At stp. we know that 1 moles = 22.4 Litres
We have 2000 moles that means that we produce 44800 litres of NH3 at stp.
2000 * 22.4 - 44800
Hope this helps :).
Final answer:
The 2.0 kg of H2 after conversion to moles will react according to the balanced chemical equation N2(g) + 3H2(g) → 2NH3(g) to yield roughly 14836 liters of NH3 at standard temperature and pressure (STP). The calculation involves using the principles of stoichiometry and the molar volume of a gas at STP.
Explanation:
The chemistry topic that your question is discussing is known as stoichiometry, which involves the mathematical relationships between reactants and products in a chemical reaction. In this case, we're looking at the reaction of nitrogen gas (N2) with hydrogen gas (H2) to produce ammonia (NH3), which is described with the balanced chemical equation: N2(g) + 3H2(g) → 2NH3(g). This equation tells us that 3 moles of hydrogen react with 1 mole of nitrogen to produce 2 moles of ammonia.
Given that 1 mole of any gas occupies 22.4 liters at standard temperature and pressure (STP), and that we have 2.0 kg or 2000 g of H2, we first need to convert this mass into moles, using the molar mass of hydrogen (1.007 g/mol). So thus, 2000 g /2.014 g/mol gives us approximately 993.5 moles of hydrogen. As per the balanced equation, 3 moles of H2 yields 2 moles of NH3. Therefore, 993.5 moles of hydrogen would yield (993.5 x 2) / 3 = 662.33 moles of ammonia. Multiplying this by the molar volume at STP gives us 662.33 moles x 22.4 L/mol =14836 liters of ammonia.
Learn more about Stoichiometry here:
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The velocity of the gas particles decreases.
The kinetic energy of the particles increases.
An exothermic reaction is more likely to occur.
Answers
Answer: The kinetic energy of the particles increases.
Explanation:
Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system. It is determined by the equation:
From above, it is visible that kinetic energy is directly related to the temperature of the system. So, if temperature is increased, average kinetic energy of the system also increases.
Also the velocity of the particles also increase as .
(2) Energy is created when the gas particles collide
(3) There are no attractive forces between the gas particles
(4) The distance between the gas particles is small, compared to their size.
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-photosynthesis
-exercise
-heterotrophs
-cellular Respiration
Answers
Answer:
cellular respiration
Explanation:
Organisms ingest large molecules, like carbohydrates, proteins, and fats, and convert them into smaller molecules like carbon dioxide and water. This process is called cellular respiration, a form of catabolism, and makes energy available for the cell to use.
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freezing water
melting ice
deposition of CO2 (changing from a gas to solid)
Answers
Among the choices given, the best answer is the third option. Melting ice shows an increase in entropy. Entropy is the degree of disorderliness in a system. Among the phases, solid has the most ordered structure which means it has the least entropy. The ice melting shows a phase change from solid to liquid. Liquid molecules are more disorganized than the solid thus there is an increase in entropy.
Answer: melting ice
Explanation:
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
1. condensation of water : Condensation process is a process where gaseous state changes to liquid state., thus decreasing randomness and decreasing entropy.
2. Freezing water : Freezing process is a process where liquid state changes to solid state, thus decreasing randomness and decreasing entropy.
3. melting ice: Fusion process is a process where solid state changes to liquid state, thus increasing randomness and increasing entropy.
4. deposition of : deposition process where gaseous state changes to solid state by escaping liquid state, thus decreasing randomness and decreasing entropy.