2. 4, 6, 8 Represents valence electrons
Answer:
Question:
A spring with a spring constant of 30 N/m is stretched 0.2 m from its equilibrium position. How much work must be done to stretch it an additional 0.1 m?
Elastic Potential Energy:
The work that needs to be done by any object is a form of energy. The work can be defined in terms of the work-energy theorem, which states that the work can either be the difference in the kinetic energy of a system or the difference in the potential energy of a system. There is a special type of potential energy reserved exclusively for
Balanced equation will be as follows
2NaOH + H2SO4=Na2SO4 + 2H2O
from MaVa/MbVb=Na/Nb where Ma is molarity of acid=?
Va is volume of acid=25.0 mL
Mb is molarity of base= 0.05 M
Vb is volume of base=18.3 mL
Nb number of moles of base= 2
Na is number of moles of acid =1
Ma*25 mL / 18.3mL*0.05M = 1/2
Ma=18.3*0.05M / 50 = 0.0183M
The molarity of sulphuric acid = 0.0183M
<span>Elements must be heated before they emit colored light because the heat being added to the elements will allow for a reaction to happen between the element and the oxygen in air. They are endothermic reactions where energy is needed in order for the reaction to proceed.</span>
Answer:
0.00079
When you round 0.000789 to 2 significant figures you would get
0.00079
because the zeros are just place holders if they are right after the decimal and don't have other numbers between them
then 789 rounds up to 790, which is 79
Explanation: