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3 years ago

What biological factors and/or actions contribute to increases in entropy?

Chemistry

1 answer:

vlada-n [284]3 years ago

3 0

Answer:

If you increase temperature, you increase entropy. (1) More energy put into a system excites the molecules and the amount of random activity. (2) As a gas expands in a system, entropy increases.

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Assume that a hydrogen atom's electron has been excited to the n ???? 5 level. how many different wavelengths of light can be em

hichkok12 [17]

n = 5 --> n = 4

n = 4 --> n = 3

n = 3 --> n = 2

n = 2 --> n = 1

<span>So we can see that there are 4 different wavelength of light that can be emitted</span>

3 0

4 years ago

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What amount of heat is removed to lower the temperature of 80 grams of water from 75º C to 45º C? The specific heat of liquid wa

Sindrei [870]

Answer:The correct answer option A.

Explanation:

$Q= m\times c\times \Delta T$

Q= heat removed from the water

m= mass of the water = 80 grams

c = heat capacity of water= 4.18 J/g°C

$\Delta T={\text{Change in temperature}}=45^oC-75^oC=-30^oC$

$Q=80g\times 4.18J/g^oC\times(-30^oC)$

Q = -10,032 joules $\approx$ -10,000 Joules

Negative sign indicates that heat was removed from the water.

Heat removed from the water of 80 gram of water is 10,032 Joules.Hence, the correct answer option A.

8 0

3 years ago

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Titration Volume & Concentration

polet [3.4K]

Answer:

18,1 mL of a 0,304M HCl solution.

Explanation:

The neutralization reaction of Ba(OH)₂ with HCl is:

2 HCl + Ba(OH)₂ → BaCl₂ + 2 H₂O

The moles of 17,1 mL≡0,0171L of a 0,161M Ba(OH)₂ solution are:

$0,0171L*\frac{0,161moles}{L}$ = 2,7531x10⁻³moles of Ba(OH)₂

By the neutralization reaction you can see that 2 moles of HCl reacts with 1 mole of Ba(OH)₂. For a complete reaction of 2,7531x10⁻³moles of Ba(OH)₂ you need:

$2,7531x10^{-3}molBa(OH)_{2}*\frac{2molHCl}{1molBa(OH)_{2}}$ = 5,5062x10⁻³moles of HCl.

The volume of a 0,304M HCl solution for a complete neutralization is:

$5,5062x10^{-3}molHCl*\frac{1L}{0,304mol}$ = 0,0181L≡18,1mL

I hope it helps!

4 0

3 years ago

In which type of atom would radioactive decay most likely occur?

Natali5045456 [20]

Answer:

Explanation:

7 0

3 years ago

Hydrogen reacts with oxygen to form only water. if 16 grams of hydrogen is mized with 16 grams of oxygen, how much water can for

olchik [2.2K]

The balanced chemical equation will tell you the molar ratios in which hydrogen and oxygen react to form water:

2H2 + O2 ----> 2H2O

Then the ratio is 2 mol of H2 react with 1 mol of O2 and form 2 mol of H2O:

2 : 1 : 2

Now convert the given data into moles:

16 grams of H2 = 16 g / 2 g/mol = 8 mol

16 grams of O2 = 16 g / 16 g/mol = 1 mol.

Then you have that the 1 mol of oxygen will react with 2 moles of hydrogen and they will form 2 mol of H2O.

And you can calculate the mass of 2 moles of H2O by multiplying by its molar weigth: 18 g/mol.

2 mol H2O * 18 g/mol = 36 grams of water.

Then, the answer is 36 grams of H2O.

7 0

3 years ago

Read 2 more answers