Answer:
yes it is true.
Ice floats on the surface of water because ice is less dense than liquid water
Explanation:
Explanation:
Reaction rate is a measure of speed of a chemical reaction.
Usually, based on rates, reactions can be divided into two parts:
- Slow reactions which usually takes a long time.
- Fast reactions which takes place completely in seconds or microseconds.
Reaction rate can be defined as a change in the concentration of a reactant or product per unit time:
The unit is mol dm⁻³ s⁻¹
Reaction rate = 
The measurement of the reaction rate is based on the disappearance of a reactant or appearance of a product with increasing reaction time.
Learn more:
Reaction rate brainly.com/question/9642960
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When earth turns once it's a day
Answer: The concentration of the weak acid in the sample is 0.1224 M
Explanation:
The balanced chemical reaction is :

To calculate the volume of acid, we use the equation given by neutralization reaction:

where,
are the n-factor, molarity and volume of acid which is 
are the n-factor, molarity and volume of base which is NaOH.
We are given:

Putting values in above equation, we get:

Thus the concentration (in M) of the weak acid in the sample is 0.1224
Answer:
the cell membrane is outside the cell wall