According to the law of conservation of mass, the mass of reactants will be equal to the mass of the products. The mass of products and reactants will only differ during a nuckear reaction
Changing of the physical state of water is not a nuclear reaction. So becoz of that the mass will remain constant without any change.
Answer:
Explanation:
The relation between frequency and wavelength is shown below as:
c is the speed of light having value
Given, Frequency = 1290 kHz = (As 1 kHz = 1000 Hz )
Thus, Wavelength is:
They use frogs because it easy to get and shows what is going on by what they eat what happened to them and other things.
Avogadro's constant is the number of atoms of carbon-12 in 12g of
carbon-12.
atoms present equals avogadro's constant times number of moles for that substance. Type of substance does not change the number of atoms if you are given the quantity of moles, therefore the fact that it is sodium does not change the value.
<span>atoms present equals avogadro's constant times number of moles
</span>=6.023x10^23 x 4.0
=2.4x10^24
Answer:
Option (c) is correct.
Explanation:
The density of a substance is 0.83 g/mL.
We know that the density of water is 1 g/mL
It means the density of the substance is less that that of density of water. If the density of substance is less that water then it will float on water's surface.
Hence, the correct option is (c) "The substance will FLOAT because it's density is SMALLER than water".