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3 years ago

Describe the difference between the normal and mutated hemoglobin amino acid sequences:

Chemistry

1 answer:

astraxan [27]3 years ago

3 0

Answer:

The chain of colored boxes represent the first eight amino acids in the beta chain of hemoglobin. The sixth position in the normal beta chain has glutamic acid, while sickle beta chain has valine. This is the sole difference between the two

Explanation:

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At which volume of base added was all the acid neutralized?

Scilla [17]

Answer: The answer is A

im 86% sure

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2 years ago

Calculate the density of nitrogen gas, in grams per liter, at stp.

lesantik [10]

Standard temperature is 273 K

Standard pressure is 1 atm

We use the ideal gas equation to find out density of nitrogen gas in g/L

Ideal gas equation:

$PV = nRT\\ PV = (\frac{Mass}{Molar mass)}RT\\ P(Molar mass) = (\frac{Mass}{Volume})RT\\ \frac{Mass}{Volume}=\frac{P(molar mass)}{RT} \\ Density = \frac{P(Molar mass)}{RT}$

Molar mass of $N_{2} = 28 g/mol$

Pressure = 1 atm

Temperature = 273 K

$Density = \frac{(1atm)(28 g/mol)}{(0.08206 \frac{L.atm}{mol.K})(273 K)}$

= 1.25 g/L

Therefore, density of nitrogen gas at STP is 1.25 g/L

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3 years ago

Calculate the volume of the gas, in liters, if 1.35 mol

Alina [70]

Answer:

22.8 L

Explanation:

Step 1: Given data

Moles of the gas (n): 1.35 mol

Pressure of the gas (P): 1.30 atm

Temperature (T): -6°C

Ideal gas constant (R): 0.0821 atm.L/mol.K

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15 = -6 + 273.15 = 267 K

Step 3: Calculate the volume of the gas

We will use the ideal gas equation.

P × V = n × R × T

V = n × R × T / P

V = 1.35 mol × (0.0821 atm.L/mol.K) × 267 K / 1.30 atm

V = 22.8 L

7 0

3 years ago

How many moles of hci are needed to form 230 moles of ci2?

LekaFEV [45]

<span>The answer is 335 dm³.</span>

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3 years ago

Is this correct pls answer as soon as possible

Lunna [17]

Answer: Yes

Explanation:

I just know it is.

4 0

3 years ago