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Dafna11 [192]
3 years ago
15

A cast fossil is formed when

Chemistry
1 answer:
Liono4ka [1.6K]3 years ago
8 0
The answer is D)
<span>when the remains of a living thing are preserved and turned into rock </span>
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Consider the hypothetical serine protease, which shows the specificity pockets. The S1 pocket has a glutamic acid in the bottom,
BigorU [14]

Answer:

See explaination

Explanation:

Hydrophobic literally means “the fear of water”. Hydrophobic molecules and surfaces repel water. Hydrophobic liquids, such as oil, will separate from water. Hydrophobic molecules are usually nonpolar, meaning the atoms that make the molecule do not produce a static electric field.

Please see attachment for the step by step solution of the given problem.

8 0
3 years ago
A buffer solution is composed of 4.00 4.00 mol of acid and 3.25 3.25 mol of the conjugate base. If the p K a pKa of the acid is
Reika [66]

<u>Answer:</u> The pH of the buffer is 4.61

<u>Explanation:</u>

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

pH=pK_a+\log(\frac{[\text{conjuagate base}]}{[\text{acid}]})

We are given:

pK_a = negative logarithm of acid dissociation constant of weak acid = 4.70

[\text{conjuagate base}]} = moles of conjugate base = 3.25 moles

[\text{acid}]  = Moles of acid = 4.00 moles

pH = ?

Putting values in above equation, we get:

pH=4.70+\log(\frac{3.25}{4.00})\\\\pH=4.61

Hence, the pH of the buffer is 4.61

8 0
3 years ago
How many sig fig does 0.000925g have
Assoli18 [71]

Answer:

Sig fig 3 decimal 6

Explanation:

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8 0
3 years ago
What is the original source of most energy used on Earth?
ser-zykov [4K]

Answer:

the sun Solar energy

Explanation:

Energy from the sun. Solar energy is the original source of most energy on Earth. There are many ways we use energy from the Sun.

3 0
3 years ago
Read 2 more answers
I need help with 17,18,19,&amp; 21
valentinak56 [21]

Answer:

17. tie hair up

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19. you light it on the side of the box

20. it should be orange because that is the safest.

21. you turn down the electricity thing

3 0
3 years ago
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