Answer:
Explanation:
Data:
p₁ = 1.00 atm; V₁ = 350. L
p₂ = ?; V₂ = 2.00 L
Calculation:
Mass of CaCO3= mol x molar mass
= 21.3 mol x 197.335 g/mol
4203.2355g
=4.2032355g
Answer:
By producing identical cells.
Explanation:
Mitosis:
It is a cell division in which DNA of original cell duplicate and produce identical copies The two new cells are called daughter cells having same genetic code to parent nuclei.
Importance of mitosis:
Mitosis play very important role in both unicellular and multicellular organisms.
In unicellular organisms it help in asexual reproduction. It produces identical copies of parent cell. For example in amoeba mitosis help to produce its new individual through cell division.
In case of multicelluar organisms mitosis also play an important role.
Regeneration of injured tissues:
It helps to regenerate and repair the injured cells by producing identical cells.
Growth:
It helps in the growth by producing new cells.
Genetic stability:
In mitosis chromosomes splits and produce identical copies therefore daughter nuclei are identical to their parents. It helps to maintain the genetic stability.
Answer:
132.94 kilo joules
Explanation:
We are given;
- Mass of benzene solution is 850 g
- Temperature change from 95°C to 3° C = 92° C or 92 K
We are required to determine the energy released by the cooling of benzene.
Taking the specific heat capacity of liquid benzene as 1.7 kJ/kg/K
Then we can determine the amount of heat energy released by using the formula;
Heat = Mass × specific heat × change in temperature
= 0.85 kg × 1.7 kJ/kg/K × 92 K
= 132.94 kilo joules
Therefore, the heat released by cooling benzene is 132.94 kilo joules
