Answer:
c
Explanation:
the shell is where the electrons are located and or orbit in a atom
Answer:
Water has strong hydrogen bond dipole-dipole intermolecular forces that give water a high surface tension and a high heat of vaporization and that make it a strong solvent.
Explanation:
<span>Biological specimens have been preserved in alcohol and formalin for many years.This could damage the specimen and change the colour of the fluid.Engineered fluids are now used as a substitute for formalin as it is a more sustainable medium..Novec fluids which are low in toxicity are also used.</span>
Given parameters:
Mass of rectangular block of copper metal = 2695g
Dimensions of the block = 4.8cm x 5.5cm x 6.4cm
Unknown;
Density of the copper = ?
To solve this problem, we apply the density formula.
Density is an intensive property of all matter. It is defined as the mass per unit volume of any substance.
Mathematically,
Density =
The unit is usually in kg/m³ or g/cm³
Now, we need to derive the volume since mass is given already.
Volume of the rectangular block = length x width x height
= 4.8cm x 5.5cm x 6.4cm
= 168.96cm³
Let's solve for the density now;
input the parameters and solve;
Density of rectangular copper block =
= 15.95g/cm³
The density of the copper rectangular block is 15.95g/cm³
3H2 + 3Cl2 —> 6HCl
As long as we have 3 in front of the compound so u have to multiple it by the number of the elements that are in the compound
We have 6 H
And 6Cl
So we need 6 HCl to balance the equation.
Hope that it helps