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3 years ago

ANSWER ASAP AND I WILL GIVE BRAINLYEST!!!!

Chemistry

1 answer:

Vlada [557]3 years ago

6 0

Answer:

20m

Explanation:

mark brainliest

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Please help, I’m a bit confused, lol

Mashutka [201]

Explanation:

option A skeleton system is correct option

hope this helps you !

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2 years ago

Please give me the reasons of the solution!

irinina [24]

1. The answer is option E, that is None of the above is correct.

As a polymer becomes more crystalline,

its melting point doesn't decreases, its density doesn't decreases, its stiffness doesn't decreases and its yield stress doesn't decreases.

2. The answer is option B, that is the molecules are arranged in sheets, with their long axes parallel and their ends aligned as well.

In the smectic A liquid-crystalline phase, molecules are arranged in sheets, with their long axes parallel and their ends aligned as well.

3. For a substitutional alloy to form, the two metals combined must have similar atomic radii and chemical bonding properties.

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3 years ago

If 200 mg of HCl is added to water to achieve a final volume of 1L, what is the final pH?

Anvisha [2.4K]

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8 0

3 years ago

Read 2 more answers

Given the unbalanced equation below, answer the following: Calculate the number of liters of 3.00 M lead (II) iodide solution pr

mr_godi [17]

The number of liters of 3.00 M lead (II) iodide : 0.277 L

<h3>Further explanation</h3>

Reaction(balanced)

Pb(NO₃)₂(aq) + 2KI(aq) → 2KNO₃(aq) + PbI₂(s)

moles of KI = 1.66

From the equation, mol ratio of KI : PbI₂ = 2 : 1, so mol PbI₂ :

$\tt \dfrac{1}{2}\times 1.66=0.83$

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

$\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}$

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

So the number of liters(V) of 3.00 M lead (II) iodide-PbI₂ (n=0.83, M=3):

$\tt V=\dfrac{n}{M}\\\\V=\dfrac{0.83}{3}\\\\V=0.277~L$

5 0

3 years ago

A "fizz-keeper" is a small air pump that you can place on an opened soda bottle. When operated the pump is used to pressurize th

AnnZ [28]

Answer: increase

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

As soda contains carbon dioxide dissolved in water.

The equation given by Henry's law is:

$C_{CO_2}=K_H\times p_{CO_2}$

where,

$C_{CO_2}$ = solubility of carbon dioxide in water

$K_H$ = Henry's constant

$p_{CO_2}$ = partial pressure of carbon dioxide

Thus on increasing the pressure, the solubility of carbon dioxide also increase.

3 0

3 years ago