4.41 g of propane gas (c3h8) is injected into a bomb calorimeter and ignited with excess oxygen, according to the reaction below. the calorimeter (including the water) has a heat capacity of 97.1 kj/°c. c3h8(g) + 5 o2(g)  3 co2(g) + 4 h2o() (a) if the temperature rose from 25.000°c to 27.282°c, what is the heat of the reaction, qrxn?

Answer :  The heat of the reaction is -221.6 kJ

Explanation :

Heat released by the reaction = Heat absorbed by the calorimeter

where,

= heat released by the reaction = ?

= heat absorbed by the calorimeter

= specific heat of calorimeter =

= change in temperature =

Now put all the given values in the above formula, we get:

As,

So,

Thus, the heat of the reaction is -221.6 kJ

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation: