Answer:
A reaction that has the same number and type of atoms on each side of the equation
Explanation:
A pec
Answer:
The volume of NaOH used
Explanation:
The tip of the buret is part of its calibration. If this tip is not filled before taking the initial reading, <u>the volume of NaOH used at the end of the titration would be inaccurate. </u>
<em>In order to avoid this, the valve of the buret should be opened and the NaOH allowed to displace whatever air that might have been trapped at the tip before the initial buret reading is taken and the titration is carried out. </em>
Answer: -19 kJ
Explanation:
The change in enthalpy is mathematically expressed as the difference between the the total potential energy of products and the potential energy of the reactants :
Where:
Then:
The negative sign in this result means we have a negative enthalpy, hence an exothermic reaction (where heat is released).
What about it do you want answered
Answer:
elements and compounds can only be liquids or solids, but mixtures can be solids, liquids or gases
Explanation:
Element: A substance that is made up of only one type of atom. Compound: A substance that is made up of more than one type of atom bonded together. Mixture: A combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.