Answer:
C.
Explanation:
We are given that
Initial concentration,
First half life, minutes
Second half life, minutes
We have to find K.
The given reaction is zero order reaction.
We know that for zero order reaction
Using the formula
Hence, option C is correct.
Answer : The volume of 6 M HCl needed is, 10 mL
Explanation :
Formula used :
where,
are the initial molarity and volume of diluted HCl.
are the final molarity and volume of HCl.
We are given:
Now put all the given values in above equation, we get:
Hence, the volume of 6 M HCl needed is, 10 mL
Both are considered mixtures - that is, they are made up of two or more pure substances. ... A heterogeneous mixture appears to be made of different substances. A solution appears the same throughout. In the fluid phase (gas or liquid, or any combination of those) a solution is transparent (thought not colourless).
Depending on the chemical, these longer-term health effects might include:
- organ damage.
- weakening of the immune system.
- development of allergies or asthma.
- reproductive problems and birth defects.
- effects on the mental, intellectual or physical development of children.
- cancer.