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Afina-wow [57]
4 years ago
8

Please show work

Chemistry
1 answer:
sasho [114]4 years ago
3 0

Answer:

The pressure is 16, 9 atm

Explanation:

We use the formula PV=nRT. The temperature in Kelvis is: 273 + 25 = 298K

PV=nRT  P =(nRT)/V

P= (0, 450 mol x 0,082 l atm/K mol x 298)/0,650 l= 16, 91723077atm

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How many grams of S are in 665 g of SO2
ollegr [7]

Answer: 111g S

Explanation:

SO2 you have = 665 g

SO2 molar mass = 64.066 g/mol

S molar mass = 32.065 g/mol

665g SO2*\frac{1 molSO2}{64.066gSO2} *\frac{1molS}{3molSO2} * \frac{32.065gS}{1molS} = 110.944... ~ 111gS

4 0
3 years ago
Threats faced by the Everglades and the Louisiana wetlands.
Viefleur [7K]

Answer:

Invasive species, runoff pollution, and climate change.

Explanation:

Invasive species, such as Burmese pythons, threaten the Florida Everglades because they are not native to the natural habitat. Pythons eat the native animals, but they don't have any predators.

Pollution from nearby farms and roads enters the water and damages the ecosystem of the Everglades and Louisiana wetlands. Toxic chemicals lead to detrimental effects for both humans and wildlife.

Humans have drained swampy areas to allow for development. However, this has led to the Everglades drying up and even burning in recent years.

6 0
4 years ago
Which transition by an electron will release the greatest amount of energy? answer soon please ​
alexira [117]

Answer:

When electron jumps from high energy level to lower energy level.

Explanation:

The elctronic transition from one energy level to another energy level within the atom, always involve energy transitions.

The energy released or absorbed by electronic transition is always discrete and is called as " Photon". It means when electron jumps from when energy level to another energy level the energy released or absorbed is treated as photon emitted or absorbed.

When an electron jumps from higher energy level to a lower energy level, a photon of specific wavelength and specific energy is emitted in other words we can say that energy is released or emitted.

The energy of photon emitted or absorbed is easily calculated using Rydberg Formula which is simply the energy difference between the two energy levels and is given as under;

Ephoton = Eo ( 1 / n1^2 - 1 / n2 ^ 2)

In the above formula n1 is the initial energy level of electron and n2 is the final energy level of electron.

Eo = 13.6 eV ( Here "o" in Eo is in subscripts)

In n1 and n2 1 and 2 are in the subscripts.

^ represents that the disgits after them are exponents.

So by just putting the values of energy levels n1 and n2 we can easily calculate the value of energy of photon ( energy due to electronic transition) and compare the results that which transition will give high energy photon and which will give low energy photon.

3 0
4 years ago
How many grams do 3.6×10^20 atoms of silicon weigh?
ANEK [815]
3.6*10^20 atoms* (1 mol/ (6.02*10^23 atoms))= 6.0*10^(-4) mol.

6.0*10^(-4) mol* (28.1 g/ 1 mol)= 1.7*10^(-2) g.

Note that the units cancel out so you get the answer.

The final answer is 1.7*10^(-2) g Si.
6 0
3 years ago
How many mols of chlorine are in 120g of chlorine gas
xz_007 [3.2K]

Answer:

Number of moles of chlorine = 3.38 mol

Explanation:

Given data:

Mass of chlorine = 120 g

Moles of chlorine = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of chlorine = 35.5 g/mol

Now we will put the values in formula.

Number of moles = 120 g/ 35.5 g/mol

Number of moles = 3.38 mol

6 0
4 years ago
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