What is the purpose of water in the tray of an API 20E system?

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∙ 13y ago

Updated: 5/25/2024

Providing a moist condition for bateria

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∙ 13y ago

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Could you balance N2H4 plus O2-NO2 plus H2O?

How can balance NH3 plus O2 - NO plus H2O? NH3 + O2 → NO + H2O The easy way is to balance the most unbalanced atoms first. 3 H on left side, 2 H on right, make 6 H on both sides by multiplying 2 * NH3 and 3 * H2O 2 NH3 + O2 → NO +3 H2O 2 N on left, 1 N on right, make 2 N on right, 2 NO 2 NH3 + O2 → 2 NO +3 H2O 2 O on left, 5 O on right, make 10 O on both sides, 4 NO + 6 H2O 2 NH3 + 5 O2 → 4 NO +6 H2O 4 N on right, 2 N on left, make 4 N on left, 4 NO 4 NH3 + 5 O2 → 4 NO +6 H2O Check 4N = 4N 12 H = 12 H 10 O = (4 + 6) 10 O Ok Now let me show a method that always works and is more organized. Determine the charge of each atom. If necessary, check the electronegativity of an atom to determine if it is negative or positive. For example in NH3, the N is on the left and the H is on the right, so you might think the N is positive and the H is negative. However the EN of H = 2.20 and the EN of N = 3.04. Since the EN of N is greater than the EN of H, the N has a stronger attraction for the pair of bonding electrons. So the N is considered negative and the H is positive. H only has 2 electron, so it can only donate 1 electron to the N atom, so the charge on the H atom = +1, making the charge on N = -3. N = -3 H = +1 ,as usual N^-3(H^+1)3 When you write the charges, write them as superscripts! The 3 at the end is a subscript. Yahoo answers will not recognize and transmit superscripts of subscripts. O2 O2 = (O^0)2 O2 = 0 charge Any free (unbonded element) or one bonded to itself has a charge = 0. NO EN of O = 3.44 EN of N = 3.44 So O = -2 N = +2 N^+2 O^-2 H2O O has greater EN, so O = -2 H = +1 (H+1)2 O-2 Determine which element's atoms have changed charge as they changed from reactant to product.(left side to right side) To change charge, an atom either supplies electrons or attracts (gains) electrons NH3 + O2 → NO + H2O N^-3 → N^+2 in NO To change from -3 to +2, the N atom gains 5 e-. (O^0)2 → 2 O-2 in NO For two O atoms to change from 0 to -2, each O atom must supply 2 e-, so O2 supplies 4 e-. Here are the half-equations that show the electron exchange. N^-3 → N^+2 + 5e- (O^0)2 + 4 e- → 2 O-2 Notice N supplies 5 e- each time an N atom changes from -3 to +2. Notice O gains 2 e- each time an O atom changes from 0 to -2, so O2 gains 4 e- each time an O2 changes from 0 to -2. Like common denominators, for this exchange to occur one time. 20 e- most be exchanged. So, the N exchange occurs 4 times to supply enough e- for the O exchange to occur 5 times. See the equations below: 4 N^-3 → 4 N^+2 + 20e- 5 (O^0)2 + 20 e- → 10 O-2 This 4 N's must appear in the original equation. This 10 O's must appear in the original equation. ……….10 O……..4 O.+….6 O …………..↓………...↓………↓ 4 NH3 + 5 O2 → 4 NO +6 H2O …↑……………...↑ 4 N ………..….4N

What is the advantage of API 20E system over the Enterotube II systeme?

API 20E system is advantageous over Enterotube II system for bacterial identification in clinical laboratories because it can provide a more comprehensive identification of Enterobacteriaceae and non-fermenting gram-negative bacteria. It is also known for its user-friendly format and interpretation system, making it easier for technicians to use. Additionally, API 20E system is more standardized and has a higher accuracy rate compared to the Enterotube II system.

What country is located at 25N and 20E?

The country located at coordinates 25N, 20E is Egypt. It is situated in North Africa and bordered by the Mediterranean Sea to the north.

What country is located at 55N and 20E?

The country located at 55N and 20E coordinates is Finland.

What country is located 60N and 20E?

The country located at approximately 60N and 20E is Finland.

What continent is at 0 20E?

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What city is 50N 20E?

Kraków

What continent is in 20n 20e?

gjbjbjb

What nation is at 35N 20E?

Russia

What country does 40N and 20E pass through?

The coordinates 40N and 20E pass through Greece.

What are the results for Api 20E system E. coli?

The Api 20E system can identify E. coli based on the biochemical reactions it produces. Results may include positive reactions for indole production, glucose fermentation, and citrate utilization, among others. It is important to interpret the full profile of reactions to accurately identify E. coli.

What is the capital of the country though which 40N and 20E past?

The coordinates 40N 20E pass through Albania. Tirana is the capital and most populous city of Albania a country in southeastern Europe.

What continent is located 60N 20E?

North America