Answer:
helium , krypton,xenon,radon, argon are noble gasses
In this case a double displacement reaction will take place.
It is really very important to know where the safety equipments are placed in lab because when we know it then accident wont occur in lab . it will also helps us to feel secure while doing any kinds of experiment
Answer:
A. 1 = 3 - 2
Explanation:
What defines an expression?
expression - An expression is a sentence with a minimum of two numbers and at least one math operation. This math operation can be addition, subtraction, multiplication, and division.
So if we look at the letter options we can see that A is the best choice.
Physical properties include: appearance, texture, color, boiling point, melting point, ect.
