Answer:
As the kinetic energy of the gaseous solute increases, its molecules have a greater tendency to escape the attraction of the solvent molecules and return to the gas phase. Therefore, the solubility of a gas decreases as the temperature increases.
Explanation:
As the kinetic energy of the gaseous solute increases, its molecules have a greater tendency to escape the attraction of the solvent molecules and return to the gas phase. Therefore, the solubility of a gas decreases as the temperature increases
Answer:
<h3>The answer is 0.81 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of metal = 10.5 g
volume = 13 cm³
We have
We have the final answer as
<h3>0.81 g/cm³</h3>
Hope this helps you
Answer:
12.044 × 10²³ atoms of oxygen
Explanation:
Given data:
Number of atoms of oxygen = ?
Moles of oxygen = 2 mol
Solution:
Avogadro number:
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms of oxygen
2 mole × 6.022 × 10²³ atoms of oxygen / 1 mole
12.044 × 10²³ atoms of oxygen
Answer:
<em>Correct option is D) The neutron has a neutral charge, which made it impossible to discover using previous experiments with positive and negative charges.</em>
Explanation:
The protons are the positively charged particles of an atom. The electrons are the negatively charged particles of an atom. As both the particles carry some kind of charge i.e either positive or negative, hence their discovery was easier.
The neutrons are the part of an atom which are neutral and do not carry any charge. Hence, their discovery took a more longer time as compared to the discovery of electrons and protons.
Answer:
Because our lungs needs oxygen
Explanation:
Carbon dioxide is what we breathe out
