3 years ago

Define empirical formula and molecular formula with example of each

Chemistry

1 answer:

Arlecino [84]3 years ago

5 0

Hi -----):):$/$:); wyd n

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2C2H6 + 8O2 = 4CO2 + 6H2O

Neporo4naja [7]

Answer:

4 moles of carbon

6 moles of water

Explanation:

I think as there no data given u have to is the numbers infront of the equation e.g 4CO2 so 4.

hope this helps :)

4 0

2 years ago

Determine the total time that must elapse until only ¼ of an original sample of the radioisotope Rn-222 remains unchanged.

Arte-miy333 [17]

Answer:

7.6 days

Explanation:

Radon is a radioactive element and Radon-222 is it's most stable isotope. The half-life of Radon-222 has been found to be approximately 3.8 days.

Let, the initial amount of the Rn-222 = 1 = A

Final amount = $\frac{1}{4}$ = A'

We will use the following relation for calculating time elapsed in the decay

$A' = A(\frac{1}{2} )^\frac{t}{t_1_/_2} }$

Thus,

$\frac{1}{4} =1(\frac{1}{2} )^\frac{t}{3.8}$

We can write is as,

$(\frac{1}{2} )^2=(\frac{1}{2} )^\frac{t}{3.8}$

Since the base in both sides are equal, powers can also be equal and thus,

$2=\frac{t}{3.8}$

So, t = 7.6 days

5 0

3 years ago

In a position time graph, a steep slope indicates _____.

sweet-ann [11.9K]

Im pretty positive its A , hope this helps!

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3 years ago

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The elements in group 17 of the periodic table are all called halogens. All halogens have the same

Nataly_w [17]

Answer:

number of valence electrons

Explanation:

All of the elements in group 17, also known as group 7A, have 7 valence electrons.

No two elements have the same atomic number nor atomic mass in elemental form.

Halogens may have any number of isotopes.

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3 years ago

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What is the molecular geometry of F2?

Taya2010 [7]

Not Sure Let Me Review My Answer

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3 years ago

Define empirical formula and molecular formula with example of each​

Define empirical formula and molecular formula with example of each