The significant figures are always:
Different from zero except there are only zeros before the point.
You can round them to the previous significant.
In scientific notation, you have one figure point two more figures.
Examples:
You have 4.21
All different from zero and only two decimals.
Those are all significant figures.
if you have 000.231555
You will shorten this to two significant figures.
Before the point, you only have zeros, so you need to keep only one of them to say its less than one.
After the point, you have a lot of figures, but you need to round this to two.
Because you have a one before the three, you'll keep the three. If you have a five or bigger number, you round it.
In this case, you'll have 0.23 with two significant figures.
Magnesium silicate is a compound of magnesium oxide and silicon. It is the magnesium salt of silicic acid containing an unspecified amount of water. The molecular formula can be expressed more clearly as MgSiO3.
The answer is A. Nitrogen Oxide
Answer:
Explanation:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Given data:
Mass = 1.060 g
Volume = 1.0 mL
Density in correct number of significant figures= ?
Solution:
d = m/v
d = 1.060 g / 1.0 mL
d = 1.06 g/ mL
The density 1.06 g/mL contain three significant figures Henry should report it 1.1 g/mL having the only one digit after decimal because in given values 1.060 and 1.0 the least number of significant figures after the decimal is 1 that's why the final result must have one significant figure after decimal.
