The correct option is B.
Isotopes refers to those chemical compounds which have the same number of protons and electrons but different number of neutrons, so they end up having different mass numbers. The diagram given above is that of beryllium, which has atomic number 4 and it has 2 electrons in its outermost shell. It has four protons [same as the number of electrons] and 5 neutrons. Beryllium 10, which is its isotope has four electrons, four protons and 6 neutrons. To get the number of neutron, remove the number of electrons from the number given in the option, that is, 10 - 4 = 6.
Answer:
The correct answer is option B.
Explanation:
When we increase number of molecules of reactant frequency of the molecular collision increases due to which effective collision between reactant molecules to form a product also increases, With this overall rate of the reaction increases.
Where as:
When we increase the temperature of the reactant molecules increase in average kinetic energy of the molecules is observed.
When we increase the activation energy of the reaction rate of the reaction slows down,
Experimental errors can be of two kinds: human error and analytical error. Analytical error can be corrected easily. You just have to use instruments that are of high precision. For example, instead of using the platform balance, use the analytical balance which displays 4 decimal places to be highly accurate. For the human error, this is subjective. The only way to correct human error is to be more meticulous on your data measurements.
Answer:
We have the final answer as
<h2>9.85 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of substance = 223.5 g
volume = final volume of water - initial volume of water
volume = 68.3 - 45.6 = 22.7
volume = 22.7 mL
It's density is
We have the final answer as
<h3>9.85 g/mL</h3>
Hope this helps you
