Answer:
A nucleus is a positive charge
Explanation:
A nucleus is made up of protons and neutrons. Protons have a positive charge and neutrons have a neutral charge.
The addition of an electron on to the element of hydrogen and ultimately to the electron carrier is an example of reduction. The molecule is becoming reduced or has electrons, and or hydrogen to help facilitate the addition of the electrons on it.
Answer:
Steps of a scientific investigation include:
1. Identifying a research question or problem
2. Forming a hypothesis
3. Gathering evidence
4. Analyzing evidence
5. Deciding whether the evidence supports the hypothesis
6. Drawing conclusions
7. Communicating the results.
Answer : The molarity of a solution is, 4.88 M
Explanation : Given,
Mass of 
= 325.4 g
Volume of solution = 500.0 mL
Molar mass of = 133.34 g/mole
Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.
Formula used :
Now put all the given values in this formula, we get:
Therefore, the molarity of a solution is, 4.88 M
Answer:
See explanation
Explanation:
When a substance is heated, its average kinetic energy increases as the molecules move faster owing to the supply of energy. The solvent molecules are able to collide more frequently with the solute molecules and dislodge them so that the solute can dissolve in the solvent.
However, when a gaseous solute is dissolved in a liquid; as the temperature is increased and solvent molecules are able to collide more frequently with the solute molecules and dislodge them, gas molecules dissolved in the liquid are more likely to escape to the gas phase and not return due to the increase in their kinetic energy.
Hence, solubility of gas solutes in water decreases as temperature increases.
