Answer : The correct option is, C.
Explanation :
pH meter : It is an electric device which measure the concentration of hydrogen-ion in the solution. It also measure the acidity or alkalinity of water in the solution.
Therefore, the purpose of student for testing the lake water is to understand how people use it in their daily-life. As this will help him to analyse the quality of lake water whether, it is fit for use or not.
<h2>Anabolic Reactions and Catabolic Reactions </h2>
Explanation:
Anabolic Reactions -
- Anabolic reactions are reactions that build larger molecules from smaller ones while the catabolic reactions are the reactions that break down molecules into smaller ones.
- Anabolic reactions are also called biosynthetic reactions because they synthesize larger molecules from smaller molecules or constituent parts.
- The energy used by these reactions to proceed is ATP.
- Anabolic reactions occur in cells for the synthesis of new proteins and other reactions.
Catabolic Reactions -
- Catabolic reactions are the reaction that includes the whole pathway of reaction that breaks down larger molecules into smaller units.
- These molecules are oxidized to release energy or sometimes used in other anabolic reactions occurring in the cell.
It would be false because you could hurt yourself while trying to get something I t he drawer
Answer:
7.82*10^5
Explanation:
In scientific notation, there is only one number before the decimal and two numbers after, anything after that is counted towards the exponent next to the 10.
Because you move the decimal to the left 5 times to get one number before the decimal (7) your exponent is 5
Hope this helped,
-Kiddoo :)
Answer: Heat of reaction ∆H = -13.43kJ
Explanation:
The number of moles of NaOH = the number of moles of HCL = N
N = concentration × volume= CV = 0.5M × 500mL/1000ml/L
N= 0.5 × 0.5= 0.25mol
Since the Molar enthalpy is given by Hm = -53.72kJ/mol
Heat of reaction ∆H = N×Hm
∆H= 0.25mol × -53.72kJ/mol = -13.43kJ
Heat of reaction ∆H = -13.43kJ