I would say that what conserving mass in a chemical equation means is that C. There is equal number of each type of atom on the reactant side and product side.
The equation is equal and no material is lost or gained.
Answer:
1370 °C
Explanation:
We can use the Ideal Gas Law and solve for T.
pV = nRT
Data:
p = 8.12 atm
V = 36.41 L
n = 2.19
R = 0.082 06 L·atm·K⁻¹mol⁻¹
Calculations
T = (1645 - 273.15) °C = 1370 °C
The temperature of the sample is 1370 °C.
Option numberrrr C I THINK
Square root of 16 is 4 so I assume the answer would just be -4
Answer:
The correct answer is - 3.012×10^23 molecules
Explanation:
The number of molecules is present in any mole of an element or compound are the same. To find the molecules you need to multiply the number of the moles of the compound by Avogadro's number:
Moles are calculated from the molecular weight, for AlF3
= 26.98 + 3×19
= 26.98 + 57
= 83.98
Then moles in 42 grams:
= 42/83.98
= 0.5001190 moles
Now the number of molecules = moles*Avogadro's number
= 0.500110×6.022×10^23
= 3.011×10^23 molecules
