All categories

3 years ago

What is the formula of Potassium decahydrate?

1 answer:

6 0

The formula of Potassium decahydrate is (K2CO3.10H2O). It contains two atoms of Potassium,one atom of Carbon, thirteen atoms of Oxygen and twenty atoms of Hydrogen.

It is basic in nature. So, it is called a basic salt. It turns red litmus paper into blue.

You might be interested in

May someone pls help me with this!

icang [17]

Answer:

Explanation:

1. Chemistry

2. Atoms

3. Anode

4. Cathode

4 0

3 years ago

2. What effect does amount of water have on plant growth?

cluponka [151]

Answer:

independent variable:amount of water

dependent variable:plant growth

independent variable:student's bedtime

dependent variable: students energy level

independent variable:exercise

dependent variable: strength

independent variable:persons height

dependent variable:ability to play basketball

Explanation:

8 0

3 years ago

Read 2 more answers

An atom of helium has a radius of 31. pm and the average orbital speed of the electrons in it is about 4.4x 10 m/s Calculate the

otez555 [7]

The question is incomplete, here is the complete question:

An atom of helium has a radius of 31. pm and the average orbital speed of the electrons in it is about $4.4\times 10^6m/s$ . Calculate the least possible uncertainty in a measurement of the speed of an electron in an atom of helium. Write your answer as a percentage of the average speed, and round it to 2 significant digits

<u>Answer:</u> The percentage of average speed is 41 %

<u>Explanation:</u>

We are given:

Radius of helium atom = 31 pm = $31\times 10^{-12}m$ (Conversion factor: $1m=10^{12}pm$ )

So, diameter of helium atom = $(2\times r)=(2\times 31\times 10^{-12})=64\times 10^{-12}m$

The diameter of the atom will be equal to the uncertainty in position.

The equation representing Heisenberg's uncertainty principle follows:

$\Delta x.\Delta p=\frac{h}{2\pi}$

where,

$\Delta x$ = uncertainty in position = d = $64\times 10^{-12}m$

$\Delta p$ = uncertainty in momentum = $m\Delta v$

m = mass of electron = $9.1095\times 10^{-31}kg$

h = Planck's constant = $6.627\times 10^{-34}kgm^2/s^2$

Putting values in above equation, we get:

$64\times 10^{-12}m\times 9.1095\times 10^{-31}kg\times \Delta v=\frac{6.627\times 10^{-34}kgm^2/s}{2\times 3.14}\\\\\Delta v=\frac{6.627\times 10^{-34}kgm^2/s^2}{2\times 3.14\times 64\times 10^{-12}m\times 9.1095\times 10^{-31}kg}=1.81\times 10^6m/s$

To calculate the percentage of average speed, we use the equation:

$\text{Percentage of the average speed}=\frac{\text{Uncertainty in velocity}}{\text{Average orbital speed}}\times 100$

We are given:

Average orbital speed = $4.4\times 10^6m/s$

Putting values in above equation, we get:

$\text{Percentage of the average speed}=\frac{1.81\times 10^6m/s}{4.4\times 10^6m/s}\times 100\\\\\text{Percentage of the average speed}=41.\%$

Hence, the percentage of average speed is 41 %

3 0

4 years ago

During which step in the pcr cycle do primers form bonds with a single-stranded template?.

shutvik [7]

Answer: The first steps

Explanation: science

5 0

3 years ago

What will be the ph of a buffer solution with an acid (pka6. 1) that is exactly half as concentrated as its conjugate base?

anygoal [31]

The pH of a buffer solution with acid that (PKA 6. 1) is exactly half as concentrated as its conjugate base is 6.4.

<h3>What is a buffer solution?</h3>

A buffer solution is a solution that has a maintained pH, not basic or not acidic. Its pH changes when acid or base is added to the solution.

We had to figure out the acid's concentration, which is exactly half that of its potential base.

We know that pH = pH_log

We have less than 6.1 pH so this is a conjugated base.

This will equal to 6.1 + log2 = 6.4

Thus, the pH of a buffer solution with acid is 6.4.

To learn more about buffer solutions, refer to the below link:

brainly.com/question/13169083

#SPJ4

7 0

2 years ago

What is the formula of Potassium decahydrate?​

What is the formula of Potassium decahydrate?