Which half reaction is associated with the anode?

The mass composition of a compound that assists in the coagulation of blood is 76.71% carbon, 7.02% hydrogen, and 16.27% nitroge

brilliants [131]

Answer : The empirical of the compound is, $C_{11}H_{12}N_2$

Explanation :

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of C = 76.71 g

Mass of H = 7.02 g

Mass of N = 16.27 g

Molar mass of C = 12 g/mole

Molar mass of H = 1 g/mole

Molar mass of N = 14 g/mole

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{76.71g}{12g/mole}=6.39moles$

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{7.02g}{1g/mole}=7.02moles$

Moles of N = $\frac{\text{ given mass of N}}{\text{ molar mass of N}}= \frac{16.27g}{14g/mole}=1.16moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{6.39}{1.16}=5.5$

For H = $\frac{7.02}{1.16}=6.0\approx 6$

For N = $\frac{1.16}{1.16}=1$

The ratio of C : H : N = 5.5 : 6 : 1

To make in a whole number we are multiplying the ratio by 2, we get:

The ratio of C : H : N = 11 : 12 : 2

The mole ratio of the element is represented by subscripts in empirical formula.

The Empirical formula = $C_{11}H_{12}N_2$

Therefore, the empirical of the compound is, $C_{11}H_{12}N_2$

4 0

4 years ago

Which quantity is a vector quantity?

yan [13]

The answer is accleration

6 0

2 years ago

High concentrations of carbon monoxide CO can cause coma and possible death. The time required for a person to reach a COHb leve

prohojiy [21]

Answer:

The exposure time that equals 750 is 3.4 hr

Explanation:

The given formula is:

$[tex]T=.0002*x^{2} -.316*x+127.9$ [/tex]

In the formula:

T= exposure time

x= carbon monoxide present in ppm

So, to calculate the exposure time when carbon monoxide is 750ppm, you should replace the "x" by 750.

$[tex]T=.0002*750^{2} -.316*750+127.9$ [/tex]

T=3.4hr

8 0

3 years ago

What are the words that describe how matter changes state

k0ka [10]

<span>"Phase" describes a physical state of matter. The key word to notice is physical. Things only move from one phase to another by physical means. If energy is added (like increasing the temperature) or if energy is taken away (like freezing something), you have created a physical change. </span>

4 0

4 years ago

If heat is supplied to the stillpot too rapidly, the ability to separate two liquids by fractional distillation may be drastical

almond37 [142]

Answer:

Yes, it's temperature dependent

Explanation:

A good fractional distillation depends largely upon maintaining a temperature gradient within the column. Perfectly, the temperature at the bottom of the column should be close or similar to the boiling temperature of the solution in the pot, and it should reduce continuously in the column until it reaches the boiling point of the more volatile component at the top of the column. If the distillation flask is heated too quickly, the whole column will heat up almost distributively and eliminate the desired temperature gradient. The result will be little fractionation and separation of the components.

3 0

3 years ago