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kifflom [539]
3 years ago
14

Distinguish air mass and a front

Chemistry
1 answer:
Readme [11.4K]3 years ago
3 0
Air mass is how much matter is in air. Front is the side that something faces forward with.
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What mass of HBO2 is produced from the<br> combustion of 139.5 g of B2H6?<br> Answer in units of g.
aliina [53]

Answer:

m_{HBO_2}=441.8gHBO_2

Explanation:

Hello there!

In this case, since the combustion of B2H6 is:

B_2H_6+3O_2\rightarrow 2HBO_2+2H_2O

Thus, since there is 1:2 mole ratio between the reactant and product, the produced grams of the latter is:

m_{HBO_2}=139.5gB_2H_6*\frac{1molB_2H_6}{27.67gB_2H_6} *\frac{2molHBO_2}{1molB_2H_6} *\frac{43.82gHBO_2}{1molHBO_2}

m_{HBO_2}=441.8gHBO_2

Best regards!

5 0
2 years ago
If a drop of blood is 0.05 mL, how many drops of blood are in the blood collection tube that holds 2 mL?
Irina18 [472]
40 drops of blood in a tube that holds 2 mL
5 0
3 years ago
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a company has designed a new product and tested the porotype which is the next step in product development
Masja [62]
I’d say market and distribution would be the next step
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What contains most of earths water
nikitadnepr [17]
The ocean hold 97 percent of earths water.
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What can you infer about aspirin’s ester group?
Reil [10]

Answer:

Option B, aspirin’s ester group provides greater digestibility to aspirin

Explanation:

Aspirin ester group has three parts

  1. carboxylic acid functional group (R-COOH)
  2. ester functional group (R-O-CO-R')
  3. aromatic group (benzene ring)

Aspirin is a weak acid and hence it cannot dissolve in water readily. The reaction of Aspirin ester group with water is as follows -

aspirin

(acetylsalicylic acid) + water → salicylic acid + acetic acid

(ethanoic acid)

Aspirin passes through the stomach and remains unchanged until it reaches the intestine where it hydrolyses ester to form the active compound.

8 0
3 years ago
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