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2 years ago

How long are tortillas good for after expiration date?.

Chemistry

1 answer:

horrorfan [7]2 years ago

8 0

Answer:

Tortillas generally last for a week after their "best by" date on the counter and about a month if placed in the fridge. But it sometimes depends on how they are stored

Explanation:

Hope this helped

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Calculate the pH of the following simple solutions:

IceJOKER [234]

Answer :

(1) pH = 1.27

(2) pH = 13.35

(3) The given solution is not a buffer.

Explanation :

(1) 53.1 mM HCl

Concentration of HCl = $53.1mM=53.1\times 10^{-3}M$

As HCl is a strong acid. So, it dissociates completely to give hydrogen ion and chloride ion.

So, Concentration of hydrogen ion= $53.1\times 10^{-3}M$

pH : It is defined as the negative logarithm of hydrogen ion concentration.

$pH=-\log [H^+]$

$pH=-\log (53.1\times 10^{-3})$

$pH=1.27$

(2) 0.223 M KOH

Concentration of KOH = 0.223 M

As KOH is a strong base. So, it dissociates completely to give hydroxide ion and potassium ion.

So, Concentration of hydroxide ion= 0.223 M

Now we have to calculate the pOH.

$pOH=-\log [OH^-]$

$pOH=-\log (0.223)$

$pOH=0.65$

Now we have to calculate the pH.

$pH+pOH=14\\\\pH=14-pOH\\\\pH=14-0.65=13.35$

(3) 53.1 mM HCl + 0.223 M KOH

Buffer : It is defined as a solution that maintain the pH of the solution by adding the small amount of acid or a base.

It is not a buffer because HCl is a strong acid and KOH is a strong base. Both dissociates completely.

As we know that the pH of strong acid and strong base solution is always 7.

So, the given solution is not a buffer.

5 0

3 years ago

Breaking down earths surface

tino4ka555 [31]

☁️ Answer ☁️

Thats called weathering.

Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth.

Hope it helps.

Have a nice day noona/hyung!~ ￣▽￣❤️

6 0

3 years ago

How do trees stay please help

Amanda [17]

Answer:

Because they have strong roots, they remain stuck in the ground.

Explanation:Because they have strong roots, they remain stuck in the ground.

4 0

3 years ago

Read 2 more answers

What are the oxidation numbers of the atoms in this reaction?

ipn [44]

A, B and D should be the ones you should check

8 0

4 years ago

What is the difference between corrosion and rusting

BartSMP [9]

Answer:

Corrosion is the process of deterioration of materials as a result of chemical, electrochemical or other reactions. Rusting is a part of corrosion and is a chemical process which results in the formation of red or orange coating on the surface of metals. ... Rust or rusting can affect only iron and its alloys.

Explanation:

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3 years ago