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3 years ago

Ok, got it!!! thank you so much

Chemistry

1 answer:

bekas [8.4K]3 years ago

7 0

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What is the effect of tap water, sea water, and rainwater on the rusting rate of iron?

UkoKoshka [18]

Answer:

The more acidic the solution the faster it rusts. More Na = more rust

Explanation:

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3 years ago

A chemical buffer is a solution that increases pH changes when small quantities of an acid or base are added. True False

Alex

Answer:

false

Explanation:

A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small amount of strong acid or base is added to it. A buffer protects from ph increasing.

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2 years ago

BRAINLIESTTT ASAP!! PLEASE HELP ME :)

Ratling [72]

Jot down the formula of the ionic compound. Let's say the ionic compound you're working with is NaCl.

Write the name of the metal.

Add the name of the non-metal with an –ide ending.

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Practice naming more simple ionic compounds.

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3 years ago

calculate the mass of 120cc nitrogen present at STP. how many number of molecules are present in it?

Stells [14]

Answer:

$0.15008\ \text{g}$

$3.23\times 10^{21}$

Explanation:

1 mol of nitrogen at STP = 22.4 L = 22400 cc

n = Mol of $N_2$ = $\dfrac{120}{22400}=0.00536\ \text{mol}$

M = Molar mass of $N_2$ = $28\ \text{g/mol}$

$N_A$ = Avogadro's number = $6.022\times 10^{23}\ \text{mol}^{-1}$

Mass of $N_2$ is

$m=nM\\\Rightarrow m=0.00536\times 28\\\Rightarrow m=0.15008\ \text{g}$

Mass of the nitrogen is $0.15008\ \text{g}$

Number of molecules is given by

$nN_A=0.00536\times 6.022\times 10^{23}=3.23\times 10^{21}\ \text{molecules}$

The number of molecules present in it are $3.23\times 10^{21}$

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3 years ago

Write the structure of the ionized form of phenylalanine

Licemer1 [7]

Amino Acids undergo a kind of acid base reaction within a molecule. The Amino group acts as a base and accepts proton from Carboxylic functional group resulting in formation of Ammonium with positive charge and a negative charge on Carboxylate. Such molecules containing both positive and negative charges are called as Zwittor Ions. Phenylalanine both in Un-ionized and Ionized form is shown below,

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3 years ago