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3 years ago

What element is solid at room temperature shiny malleable and a good conductor of heat

Chemistry

1 answer:

Aliun [14]3 years ago

6 0

Answer:

I believe that it would be copper because copper is all of those things.

Explanation:

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2. Find the molar mass for:<br> FeCl2 • 5H20

riadik2000 [5.3K]

Answer:

Molar mass = 216.8254 (approx.)

Explanation:

Given:

FeCl2 • 5H20

Find:

Molar mass

Computation:

Atomic mass

Fe = 55.845

Cl = 35.453

H = 1.00794

So,

FeCl2 • 5H20

55.845 + 2(35.453) + (2)5(1.00794) + 5(15.999)

55.845 + 70.906 + 10.0794 + 79.995

Molar mass = 216.8254 (approx.)

8 0

3 years ago

Predict the formula for ba 2 and s-2.

Serhud [2]

$Ba^{2+} + S^{2-}$
$BaS$

5 0

4 years ago

Read 2 more answers

What is a substance?

shusha [124]

I think the answer is C. An element or compound that cannot be physically separated. Sorry if im wrong.

7 0

4 years ago

Please explain this to me, it's taking forever for me!

liubo4ka [24]

Answer:

civic cgvvbbbibbbnn bnnnn

5 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