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3 years ago

4.1 kg of a plastic, used to make plastic bottles, has a carbon footprint of 6.0 kg of carbon dioxide.

Chemistry

1 answer:

Debora [2.8K]3 years ago

4 0

Answer:

The carbon footprint of one plastic bottle of mass 23.5 g is 34.390 g.

Explanation:

The carbon footprint of one plastic bottle can be estimated by simple rule of three. That is:

$x = \frac{23.5\,g}{4100\,g}\times 6000\,g$

$x = 34.390\,g$

The carbon footprint of one plastic bottle of mass 23.5 g is 34.390 g.

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(a)-Use Lewis symbol store present there action that occurs between Ca and F atoms. (b)-What is the chemical formula of the most

Charra [1.4K]

Answer:

(a) The Lewis structure is shown in the image below.

(b) $CaF_2$

(c) Calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond.

(d) Calcium atom loses electrons.

Explanation:

Calcium is the element of second group and forth period. The electronic configuration of Calcium is - 2, 8, 8, 2 or $1s^22s^22p^63s^23p^64s^2$

There are 2 valence electrons of Calcium.

Fluorine is the element of group 17 and second period. The electronic configuration of the element fluorine is - 2, 7 or $1s^22s^22p^5$

There is 1 valence electron of fluorine.

The Lewis structure is drawn in such a way that the octet of each atom is complete.

Thus, calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.

Thus, the formula of calcium chloride is $CaF_2$ .

<u>(a) The Lewis structure is shown in the image below.</u>

<u>(c) Calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond.</u>

<u>(d) Calcium atom loses electrons.</u>

5 0

3 years ago

Which energy resource causes the most safety concerns?.

Vlad [161]

Answer:

Based on safety and carbon emissions, fossil fuels are the dirtiest and most dangerous, while nuclear and modern renewable energy sources are vastly safer and cleaner.

4 0

2 years ago

Question is in picture! Due at 3:45!!!

olga nikolaevna [1]

The answer is D.2HCl

6 0

3 years ago

What is the maximum kinetic energy of an ejected electron if silver metal is irradiated with 224 nm light? The

Genrish500 [490]

Answer:The maximum kinetic energy KEe of ejected electrons (photoelectrons) is given by KEe=hf−BE KE e = h f − BE , where hf is the photon energy and BE is the binding energy (or work function) of the electron to the particular material.

Explanation:

3 0

3 years ago

If the half-life of C-14 is 5730 years, how much C-14 would be left from a 5000 year-old sample that started as 150 grams?

serious [3.7K]

<h3>Answer:</h3>

81.9 grams

<h3>Explanation:</h3>

From the question we are given;

Half-life of C-14 is 5730 years
Original mass of C-14 (N₀) = 150 grams
Time taken, t = 5000 years

We are required to determine the mass left after 5000 years

Using the formula;

N = No(1/2)^t/T, where N is the remaining mass, N₀ is the original mass, t is the time taken and T is the half-life.

t/T = 5000 yrs ÷ 5730 yrs

= 0.873

N = 150 g ÷ 0.5^0.873

= 150 g × 0.546

= 81.9 g

Therefore, the mass of C-14 left after 5000 yrs is 81.9 g

5 0

3 years ago