Colors!!
We know about all the colors in the rain bow but do you know how most of them are made?
Red and blue and yellow can make sooooo many different colors if you mix them together.
For example red + blue = purple! This is because red, blue and yellow are primary colors and these colors are colors that can make up other colors.
Answer:
Solids can hold their shape because their molecules are tightly packed together. ... Atoms and molecules in liquids and gases are bouncing and floating around, free to move where they want. The molecules in a solid are stuck in a specific structure or arrangement of atoms.
<em>Hope it helps...</em>
If we knew the number of electrons in the outermost shell, the valence electrons, then we could find the valency of the element by calculating how many electrons need to be gained or lost to achieve stable electronic configuration.
For example, if an element has 7 valence electrons, and requires 8 valence electrons to be stable, then its valency will be -1.
They are the chemical symbol like the ones on the periodic table
Answer:
5 ppb of Cd
Explanation:
Given , Concentration = 0.0050 mg/L
To find this concentration in parts per billion
As,
1 mg per liter = 1 ppm
Parts per billion is defined as the number of the units of the mass of contaminant per thousand million units of the total mass. The relation between ppm and ppb is shown below as:
1 ppm = 1000 ppb
Concluding as:
1 mg per liter = 1000 ppb
So,
0.0050 mg/L = 1000 × 0.0050 ppb = 5 ppb of Cd
