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4 years ago

Which line segment on the graph represents boiling

1 answer:

8 0

1. There is no graph given

2. ENERGY LEVELS!!!

Boiling is the process of liquid(middle energy, flat line) turning into a gas(lots of energy, flat line), hope this helps

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MODEL Draw a diagram of the soda can calorimeter as a system with energy inputs and

earnstyle [38]

que ?

ARIGATÕ

I WILL TRY AND GET A FEW THINGS TO BE DONE

4 0

3 years ago

50 grams of acetic acid C2H4O2 are dissolved in 200 g of water. Calculate the weight % and mole fraction of the acetic acid in t

Len [333]

$50g$ $of$ $C_2H_4O_2$ $in$ $200g$ $H_2O$

so:

$\frac{50}{200+50}+100\%= \frac{50*100}{250}\%=20\%$

$MW of acid = 2*C+4*H+2*O = 2*12+4*1+2*16=$

$=24+4+32=60g/mol$

so:

$\frac{50g}{60g/mol}\approx0.83moles$

it means that

in $50g$ of acid there is $\approx0.83$ moles of acid

$MW of H_2O = 2*H+O=2*1+16=2+16=18g/mol$

so:

$\frac{200g}{18g/mol}\approx11.11moles$

it means that:

in $200g$ of water there is $\approx11.11$ moles of water

therefore:

$\frac{0.83mol}{11.11mol+0.83mol}= \frac{0.83mol}{11.94mol}=0.069$

So your answers are:

$20\%$

and the mole fraction is:

$0.069$

6 0

4 years ago

Seawater, which covers the majority of the earth, is composed primarily of molecules of H2O and equal numbers of Na ions and Cl-

Vsevolod [243]

Explanation:

Species present are $H_{2}O(l)$ , $Na^{+}(aq)$ and $Cl^{-}(aq)$ . Now, we will calculate the number of componenets present as follows.

C = n - E

where, E = number of independent equations

n = number of phases present

Therefore, we will calculate the number of components as follows.

C = 3 - 1

= 2

Since, sodium chloride (NaCl) will tend to form a homogeneous mixture in water. Therefore, phase will be equal to 1.

Therefore, it means that there are two components present in one phase.

5 0

3 years ago

PLEASE ANSWER ASAP!!!!!!!!

Ugo [173]

I believe the answer is letter C

3 0

3 years ago

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All are examples of charged particles except _________. a. neutrons b. protons c. electrons

NeX [460]

According to the basic facts, the only one non-charged subatomic particle from the scale is definitely neutrons because protons is always positively charged whereas elecrtons is <span>negatively charged. So, the right answer is A.</span>

4 0

3 years ago

Read 2 more answers