Chemistry, 23.03.2020 04:57 skyhe34

At 20°C, how many grams of potassium nitrate can be
dissolved in 100 g of water?

Answers: 3

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Answer from: 101EXPERIENCE

32 g of potassium nitrate can be dissolved in 100 g of water at 20°C.

Explanation:

The measure of amount of any kind of solute getting dissolved in any solvent is termed as solubility. The solubility can be measured as the ratio of mass of the solute to the mass of the solvent at room temperature. It is also known that the solubility of any solution depends on the temperature. When the concentration of solute exceeds the solubility limit, the solution becomes saturated.

As it is known from the solubility graph of potassium nitrate salt that at 20°C, 32 g/100 g is the solubility limit of potassium nitrate in 100 g of water.

So this means that 32 g of potassium nitrate can be dissolved in 100 g of water at 20°C.

Answer from: jesus3426

At 20 °C, 30 grams of potassium nitrate can be dissolved in 100 g of water.

Explanation:

When 30 grams of potassium nitrate, KNO3 , is dissolved in 100

grams of water at 20 °C, the solution can be described as saturated.

Answer from: Quest

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

Answer from: Quest

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

$^{m}_{4}x$ and $^{m}_4y$

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

$^{m}_{5}x^{-}$

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be $^{9}_{5}be^{-}$ and $^{9}_{4}be$ .

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.

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