How quickly can bacterial contamination occur?

Chemistry

2 answers:

Svet_ta [14]4 years ago

7 0

Answer:

Bacteria are small microorganisms that split and multiply very quickly. In conditions ideal for bacterial growth, one single-cell bacteria can become two million in just seven hours

Explanation:

NeX [460]4 years ago

5 0

5-10 seconds xxx :) hope this helps

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A 2.144-g sample of phosgene, a compound used as a chemical warfare agent during World War I, contains 0.260 g of carbon, 0.347

Greeley [361]

First convert each mass to moles by dividing by the molar mass.

0.347g Oxygen = 0.022 moles
0.260g Carbon = 0.022 moles
1.537g Chlorine = 0.043 moles

Divide each by smallest mole vale (0.022)

Oxygen = 0.022/0.022 = 1
Carbon = 0.022/0.022 = 1
Chlorine = 0.043/0.022 = 2

Therefore the empirical formula is COCl2

4 0

3 years ago

Draw the structure of the major organic product isolated from the reaction of 1-hexyne with sodium amide in liquid ammonia follo

77julia77 [94]

Answer:check explanation and attached file/picture

Explanation:

Alkynes are hydrocarbons and they are very acidic because of hybridization effect(the more acidic the s-character is, the more acidic it is going to be).

The reaction of 1-hexyne with sodium amide in liquid ammonia is a form of deprotonation 'reaction' to form acetylide. Due to the acidic nature of the terminal hydrogen atom, terminal alkynes do form metallic derivatives by the replacement of the terminal hydrogens. The equation of Reaction is given below.

C6H10 + NaNH2( in liquidNH3) ------------> C6H9Na + H-NH2.

The acetylide is a bae and a very good nucleophile.

The reaction is then followed by the addition of 1-bromobutane. This reaction is used for the production of longer chain alkynes. The equation of Reaction is attached in the picture.

3 0

3 years ago

Read 2 more answers

Need help with this , answers by morning ??

Svetach [21]

275 mm = 27.5 cm
45mg = 4.5g
25cm = 250 mm
Not sure about number 8

4 0

3 years ago

The element carbon is also called the "element of live". Declare.

wel

Answer:

The molecules of all living things contain backbones that consist of carbon atoms.

Explanation:

Millions of carbon-based compounds make up the cells and other structures of living organisms.

Organisms need these compounds to live, grow, and reproduce. Without them, life could not exist,

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3 years ago

What is the chemical composition of bituminous coal?

horsena [70]

Answer: (The composition of a bituminous coal by percentage is roughly: carbon [C], 75–90; hydrogen [H], 4.5–5.5; nitrogen [N], 1–1.5; sulfur [S], 1–2; oxygen[O], 5–20; ash, 2–10; and moisture, 1–10.)

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3 years ago