1 lb=453.592 grams
So he gained 453.592 pounds
True. Water is a neutral substance so nothing should react to it, this makes it so that no matter how basic a metal is, it reacts the same to water.
Answer:
C. When two substances are combined, but are not chemically
Explanation:
Compound is result of chemical combination of two or more than two substance. When substances chemically combine thier properties change.
When substance are mixed in such a way that they donot react with each other such combination results in mixture. In mixture their properties do not change.
Explanation:
Overpopulation of phytoplankton results in a formation of algal bloom which is harmful because these algal blooms produce highly toxic and harmful compounds that affect the population such as birds, fish, mammals, and also people.
Excessive growth of phytoplankton affect the concentration of carbon dioxide, deplete the oxygen present in water and also results in unavailability of food that affects the marine organisms,
Answer:
Option-D (Piece of Wood) is the correct answer.
Explanation:
Density is related to mass and volume as,
Density = Mass / Volume
For Wood,
Density = 42.5 / 50
Density = 0.85
You can calculate remaining densities by yourself. Among all the density of Piece of Wood is the least.