Answer:
Applications of a ph scale
It can be used in a wide variety of applications
- ph scale can be used in agriculture
- it can be used in treatment of waste water
- it can be used in industrial processes
- it can be used in environmental monitoring
- it can also be used in researches and development
Explanation:ph scale is a used to measure the acidity or alkalinity of a given solution
Answer:
12.044 ×10²³ molecules of HCl
Explanation:
Given data:
Number of moles of MgO = 1 mol
Number of molecules of HCl react = ?
Solution:
Chemical equation:
MgO + 2HCl → MgCl₂ + H₂O
with 1 mole of MgO 2 moles of HCl are react.
Number of molecules of HCl react:
1 mole contain 6.022×10²³ molecules
2 mol × 6.022×10²³ molecules / 1 mol
12.044 ×10²³ molecules
Answer:
cellular respiration is needed for our cells to get energy from our food.
Explanation:
Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
Calcium will lose 2 electrons to gain a full outer shell.
This will form a positive ion.
