Answer:
A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements.
Explanation:
If only one atom of a specific type is present, no subscript is used. For atoms that have two or more of a specific type of atom present, a subscript is written after the symbol for that atom
We can use the following formula when making diluted solutions from concentrated solutions
c1v1 = c2v2
where c1 is concentration and v1 is volume of the concentrated solution
and c2 is concentration and v2 is final volume of diluted solution
substituting the values in the equation
18.4 M x V = 0.1 M x 600 mL
V = 3.26 mL
volume of 3.26 mL of 18.4 M sulfuric acid solution should be taken and diluted upto 600 mL
The enthalpy of the reaction is 100 kJ and the reaction is endothermic in nature.
<u>Explanation:</u>
Enthalpy of any chemical reaction is the measure of the difference in the energy utilized for performing a reaction. As in the present case, it is stated that the initially, a chemical reaction has 356 kJ of energy and after ending the chemical reaction has 456 kJ of energy.
This means the energy is increased after the chemical reaction. So the heat energy is absorbed during the reaction. This kind of chemical reaction where the products are formed by absorbing energy from the surrounding is termed as endothermic reaction.
Enthalpy = Energy absorbed = 456-356 =100 kJ.
So, the enthalpy of the reaction is 100 kJ. And as the enthalpy is positive which means the energy is absorbed from the surroundings, so the reaction is endothermic in nature.
Answer:
epidermal! hope this helps u!
If the reaction is a chemical change, new substances with different properties and identities are formed. This may be indicated by the production of an odor, a change in color or energy, or the formation of a solid.
