3 years ago

What is one example of closed economy

Chemistry

1 answer:

Gre4nikov [31]3 years ago

5 0

Some examples are like Russia, Egypt, China, Brazil

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PLEASE HELP! NO LINKS! CHEMISTRY!

Bingel [31]

Answer:

Solution A is 1,000 times more acidic than Sol. B

Explanation:

for pH values we use scientific notation:

-log10 c (where c is the hydrogen ion concentration) is used to notate pH value (think of it as a unit)

ie:

10^-2 is sol A 10^-5 is sol B

5-2 is 3

10^-3 = 1000

there's a diff of 1,000 between the solutions.

6 0

3 years ago

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Calculate a reasonable amount (mass in g) of your unknown acid to use for a titration. You will want about 30 mL of titrant to g

Vinil7 [7]

Answer:

"0.60 g" is the appropriate solution.

Explanation:

The given values are:

Volume of base,

= 30 ml

Molarity of base,

= 0.05 m

Molar mass of acid,

= 400 g/mol

As we know,

⇒ $Molarity=\frac{Number \ of \ moles \ of \ base}{Number \ of \ solution}$

On substituting the values, we get

⇒ $0.05=\frac{Number \ of \ moles \ of \ base}{30\times 10^{-3}}$

⇒ $Number \ of \ moles \ of \ base=0.05\times 30\times 10^{-3}$

⇒ $=1.5\times 10^{-3}$

hence,

⇒ $Moles \ of \ acid=\frac{Mass \ of \ acid}{Molar \ mass \ of \ acid}$

On substituting the values, we get

⇒ $1.5\times 10^{-3}=\frac{Mass \ of \ acid}{400}$

⇒ $Mass \ of \ acid=1.5\times 10^{-3}\times 400$

⇒ $=0.60 \ g$

8 0

3 years ago

O que é etnocentrismo

Shtirlitz [24]

Answer:

yes and bla bla

........

4 0

3 years ago

Private land is generally used for _______. a. homes b. businesses c. factories d. all of the above Please select the best answe

alekssr [168]

HM, I think the answer would be D. This is just a guess, so please use it if ou want to answer D it's ok :D

5 0

3 years ago

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Should mammoths be re-created and released into the Arctic ecosystem

Maslowich

It honestly depends weather or not they create them the same way

8 0

4 years ago

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