The answers are:
Reflecting telescopes are less expensive, the materials are not costly.
Reflecting telescopes can gather light from objects. This becomes basis the system to see Celestial objects.
Reflecting telescopes uses mirrors and Refracting telescopes use lenses. It is also much bigger in size because of the mirrors placed inside.
B is the answer
<span>least 20 characters </span>
Answer:
The reaction begins and builds up heat. This heat causes the aluminum to melt and float on top of the liquid bromine (which is producing a cloud of vapor because the heat is also boiling it). Wherever the two elements meet, sparks, heat, and light are given off.
Explanation:
be more specific
when its placed in the stomach it will raise
Answer: Molarity of a physiological saline solution is 0.15 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
n = moles of solute
=volume of solution in ml
Given : 0.89 g of sodium chloride in 100 ml of solution.
To calculate the moles, we use the equation:
Volume of solution = 100 ml
Molarity of physiological saline solution is 0.15 M
