Answer:
Volcanoes change the earth's surface by allowing molten rock, or magma, to escape the earth and create rock formations or mountains.
Explanation:
please mark me brainiest like my answer and follow me on this ♥️♥️♥️
The mass of CH₄ that is consumed is 10.598 g.
<h3>What is enthalpy?</h3>
The enthalpy of a system is defined as the sum of the internal energy of a system and the energy that is produced due to its pressure and volume.
It is given by
H = U+PV
The following reaction takes place during the combustion of CH₄
Energy evolved during the combustion, E = 587.9 kJ
Enthalpy of combustion of methane, ∆H = 890.3 kJ
= 587.9 /890
Mass of CH₄ that is consumed = no of moles × molar mass of CH₄
= 587.9 /890 × 16
= 10.598 g
The mass of CH₄ which is consumed is 10.598 g
Learn more about enthalpy:
brainly.com/question/14047927
#SPJ4
I uploaded the answer to a file hosting. Here's link:
bit.ly/3a8Nt8n
Answer: 273.15
Explanation: BEng smart lol
<h3>
Answer:</h3>
16.30 %
<h3>
Explanation:</h3>
- The percent by mass is calculated by dividing the mass of solute by the mass of solution and then multiplying by 100.
- That is. Percent by mass = (Mass of solute/Mass of solution) × 100
In this case;
Mass of solute = 14.60 g
Mass of solvent = 74.95 g
But, Mass of solution = mass of solute + mass of solvent
Thus;
Mass of solution = 14.60 g + 74.95 g
= 89.55 g
Therefore;
% mass = (14.60 ÷ 89.55 g) × 100%
= 16.30 %
Hence, the mass percent is 16.30%