Mg UG MCG? The conversion relationship between UG and MCG

You're talking about quality units, right
1 microgram is equal to one millionth of a gram. 1 microgram = 1000 nanograms. 1000 micrograms = 1 mg. 1000000 micrograms = 1 g. 1000000000 micrograms = 1 kg
UG and MCG are both micrograms
MG is mg, a lot in daily life

How to convert mg / L to UG / g
Unit of micro water content in transformer oil

Do you mean "mg / L and UG / L" or "how to convert mg / L and UG / ml"
1mg/L=1000ug/L
1mg/L=1ug/ml

Can ppm and Mg / kg or mg / G be converted? How to convert
It's better to be concise.

Ppm or p.p.m is the acronym of parts per million,
It means "parts per million" or "parts per million, 10 ^ - 6"
Or volume can be used, but not much
On the topic, mg / kg = 1mg / 1kg * 1000g / kg * 1000mg / g = 1mg / 1000 * 1000mg
=1/1000*1000=1/10^6=10^-6=1ppm .
Similarly, mg / g = 1 / 1000 = 1000 ppm

The relationship among mass, volume and density

Density = mass / volume
If the density is constant and the mass is large, the volume will be large
If the mass is fixed and the density is large, the volume will be small
If the volume is fixed and the mass is large, the density will be large

100 square meters - 90 square decimeters =?

10000-90=9810

Jiajia's birthday is coming. Her mother bought a set of "classic Song Ci" and gave it to Jiajia as a gift. It's 20cm long, 25cm wide and 8cm high
(1) When packing, the overlap of the wrapping paper is about 500cm. How many square centimeters of wrapping paper does it take to pack this book?
(2) The length of the tied bow is 30cm. How many cm ribbons are used

1. 20x25x2 + 20x8x2 + 25x8x2 = 1720 square cm, and then 1720-500 = 1220
2.4X8+25X2+20X2=122cm 30+122=152cm

When using 0.3KG empty bottled water, the mass after filling water is 0.5kg. If using this bottle to fill a certain liquid, the mass after filling this liquid is 0.46kg, and the density of this liquid is 0.5kg______ ．

When the bottle is filled with water, the mass of water is: mwater = mtotal 1-m bottle = 0.5kg-0.3kg = 0.2kg, ∵ ρ = MV, ∵ the volume of bottle is: V bottle = V water = m water ρ water = 0.2kg, 1.0 × 103kg / m3 = 2 × 10-4m3. When the bottle is filled with liquid, the mass of liquid is: mliquid = mtotal 2-m bottle = 0.46kg-0.3kg = 0.16kg, the volume of liquid is: v

Gas flow calculation formula
How to calculate the flow when the pipe diameter and pressure difference are known

Q=4.44F*((p2-p1)/ρ）0.5
Flow rate Q, flow area F, pressure difference between front and back p2-p1, density ρ, 0.5 are expressed as 0.5 power. All above are international system of units. Applicable medium is liquid, if gas needs to be multiplied by a factor
From q = f * V, we can calculate the relationship with pipe diameter
The above is the steady flow formula

Mother is going to use colored paper to wrap a gift box, which is 4 decimeters long, 3 decimeters wide and 2 decimeters high. At least how large a piece of colored paper is needed? To tie the gift box, if the joint is 4 decimeters long, how long is the ribbon?

Mother is going to use colored paper to wrap a gift box, 4 decimeters long, 3 decimeters wide and 2 decimeters high
At least what size of colored paper is needed?
（4×3+4×2+3×2)×2
=26×2
=52 square decimeters
To tie this gift box, if the joint is 4 decimeters long, how long is the ribbon?
4×2+3×2+2×4+4
=8+12+8+4
=32 decimeters

When 1mol electron transfer, the volume of chlorine generated under standard condition is 50. What is the oxidized substance mol
The chemical equation of chlorine production by the reaction of potassium chlorate with concentrated hydrochloric acid
Detailed explanation,

ClO3- +5Cl- +6H+=3Cl2+3H2O
So when 1 mol electrons are transferred, 0.6 mol Cl 2 is generated, that is 13.44 L, and the oxidized substance (Cl -) is 1 mol

Mg UG MCG? The conversion relationship between UG and MCG