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3 years ago

Which organic compound is correctly matched with the subunit that composes it?

1 answer:

7 0

It is the Starch-glucose. Glucose is a solitary sugar particle that your body can retain specifically in the digestive system. Sucrose and starches are starches shaped by at least two sugars reinforced together. The sugars in sucrose and starch must be separated into glucose particles in the gastrointestinal tract before your digestive organs can assimilate them.

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What is the density of ammonia gas, nh3, at 31°c and 751 mmhg?

solmaris [256]

First, we will use the general gas formula to get the number of moles.
PV = nRT where:
P is the pressure of gas = 751 mmHg = 100125.096375 Pascal
V is the volume = 1 liter = 0.001 m^3
n is the number of moles we want to calculate
R is the gas constant = 8.314 J/(K. mol)
T is the temperature = 31 degrees celcius = 304.15 degree kelvin

Substitute in the above equation to get the number of moles as follows:
100125.096375 * 0.001 = n * 8.314 * 304.15
n = 0.039595 moles

Now, we will use the number of moles to get the mass as follows:
number of moles = mass / molar mass
mass = number of moles * molar mass
number of moles = 0.039595 moles
molar mass of ammonia (NH3) = 14 + 3(1) = 17 grams
Substitute to get the mass as follows:
mass = 0.039595 * 17 = 0.673122 grams

Last step is to get the density as follows:
density = mass / volume
mass = 0.673122 grams
volume = 1 liter
density = 0.673122 / 1 = 0.673122 grams/liter = 0.000675 kg/L

8 0

3 years ago

N which direction will the net reaction proceed.

finlep [7]

Answer:

1) The correct answer is option b.

2) The correct answer is option a.

Explanation:

$X+Y\rightleftharpoons Z$

At 300 K, the value of the $K_p=1.00$

The $K_c$ and $K_p$ is related by :

$K_p=K_c\times (RT)^{\Delta n}$

where,

$K_p$ = equilibrium constant at constant pressure

$K_c$ = equilibrium concentration constant

R = gas constant = 0.0821 L⋅atm/(K⋅mol)

T = temperature = 300 K

$\Delta n$ = change in the number of moles of gas = 1 - 2 = -1

Now put all the given values in the above relation, we get:

$1.00=K_c\times (0.0821 L atm/(K mol)\times 300)^{-1}$

$K_c=24.63$

The $K_c$ of the reaction = 24.63

Given = [X] = [Y] = [Z] = 1.0 M

Value of reaction quotient = Q

$Q=\frac{[Z]}{[X][Y]}=\frac{1.0 M}{1.0M\times 1.0 M}=1$

$Q$ , the equilibrium will move in forward direction that is in the right direction.

$X+Y\rightleftharpoons Z$

At 300 K, the value of the $K_p=1.00$

Given = $P_x = P_z = 1.0 atm, P_y = 0.50 atm$

Value of reaction quotient in terms of partial pressure = $Q_p$

$Q_p=\frac{P_z}{P_x\times P_y}=\frac{1.0 atm}{1.0 atm\times 0.50 atm}$

$Q_p=2$

$Q_p>K_p$ the equilibrium will move in backword direction that is in the left direction.

6 0

3 years ago

What can an experiment to use to distinguish between a strong acid and a strong base

aivan3 [116]

The pH meter can only be used to differentiate between weak and strong acids providing that the concentrations are known. However, it is convenient to determine the concentration of an acid (or base) by titration.

4 0

4 years ago

In order to prepare very dilute solutions, a lab technician chooses to perform a series of dilutions instead of measuring a very

laiz [17]

Answerit is a

Explanation:

8 0

3 years ago

One type of butterfly has either green and pink wings or solid green wings. One year many more solid green butterflies survived

Orlov [11]

Answer:

Explanation:

C is the only answer that is affected by the color of the wings.

7 0

3 years ago