Its white
It has temperature
It has density and
It has volume! :)
Answer:
a Control Variable in an experiment remains the same.
Strategy: with the volume, pressure and temperature you can find the number of moles.
With the number of moles and the mass in grams you can find the molar mass of the gas, and with the molar mass you can figure out the gas.
1) pV = nRT => n = pV / RT
R = 0.082 atm*liter / mol*K
T = 62 + 273.15 = 335.15 K
p = 1.98 atm
V = 0.752 liter
n = (1.98 atm * 0.752 liter) / [0.082 atm* liter / (mol * K) * 335.15K] = 0.05418 mol
2) molar mass = mass / n = 2.49 g / 0.05418 mol = 45.96 g/mol ≈ 46.0 g/mol
So, now you must compare this molar mass with the molar masses of the list of choices.
For example, for NO2 the molar mass is 14 g/mol + 2 * 16 g/mol = 14 g/mol + 32 g/mol = 46 g / mol.
Given that NO2 is in the list of choices, you can conclude that the gas is NO2.
E. solid, hard yet brittle, very high melting and boiling point
Answer:
When aqueous solutions of silver(I) acetate and manganese(II) iodide are combined, an insoluble precipitate of silver(I) iodide is formed
Explanation:
- It is an example of precipitation reaction.
- When aqueous solutions of silver(I) acetate and manganese(II) iodide are combined, an insoluble precipitate of silver(I) iodide is formed.
- Precipitation of silver(I) iodide is confirmed by it's yellow color.
- Hence a reaction is observed.
- Molecular reaction: