Answer: Heat
Explanation:
when there is enough air in the balloon that is when the crew would blast the burner into the envelope mouth building the pressure until the balloon inflates until it starts to lift off the ground and as the air builds up the balloon will lift right off the ground
Answer:
2.1077×10^25 atoms
Explanation:
Since one molecule of K2SO4 contains 7 atoms {Two Potassium(K), One Sulphur (S) and Four Oxygen (O)}.
Thus in 5 moles there will be,
6.022 × 10²³ × 7 × 5 =
210.77 × 10²³ or 2.1077 × 10²⁵ or 21077 × 10²¹ atoms.
Here, 6.022 × 10²³ is the Avogadro number.
Answer:
Because a redox reaction holds for both oxidation and reduction.
One half equation is of oxidation and the other is of reduction.
When these two half equations are combined, we get an overall equation of the redox reaction.
<u>Answer:</u> The partial pressure of gas A is 6.34 atm and that of gas B is 17.1 atm
<u>Explanation:</u>
To calculate the pressure of the gas, we use the equation given by ideal gas, which follows:
......(1)
where,
P = pressure of the gas
V = Volume of the gas
T = Temperature of the gas
R = Gas constant =
n = number of moles of gas
We are given:
Putting values in equation 1, we get:
We are given:
Putting values in equation 1, we get:
Hence, the partial pressure of gas A is 6.34 atm and that of gas B is 17.1 atm
Answer: (1) It is exothermic and DH equals -91.8 kJ.
Explanation:
There are two types of reactions in terms of heat:
Endothermic reactions are those reactions in which heat is absorbed by the system and exothermic reactions are those reactions in which heat is released by the system.
As the heat is given on the products side, it means the heat is released in the reaction and thus the reaction is exothermic. The enthalpy change for exothermic reaction is written as negative and the enthalpy change for endothermic reaction is written as positive.