Looks good to me but re review the 8 and make sure it's correct
Answer:
1. What is a substance that CANNOT be chemically broken down into simpler substances?
2. What type of change is one that produces new substances like burning wood to make ashes or mixing mentos and coke. You can't get the wood or the mentos back.
3. What is a change from a solid directly to a gas
4. What is a change from a gas to a liquid
5. What are nonmetals in group 7A of the periodic table?
1. An element
2. Chemical change
3. sublimation
4. condensations
5. Halogens
I think there is 3 moles of carbon atoms in 3 moles of methane. This is so as the chemical formula for methane is CH4, which means that for every 1 mole of methane molecule you have 1 mole of carbon atom as in each molecule of methane there's one carbon atom.
Data Given; T = 306 K
M.mass of CO = 28 g/mol = 0.028 Kg/mol
M.mass of CO₂ = 44 g/mol = 0.044 Kg/mol
M.mass of SO₃ = 80 g/mol = 0.080 Kg/mol
Gas Constant = R = 8.314 J/mol.K
Formula used; Vrms =
Putting values for CO; Vrms =
Vrms = 477 m.s⁻¹
Putting values for CO₂; Vrms =
Vrms = 380 m.s⁻¹
Putting values for SO₃; Vrms =
Vrms = 282 m.s⁻¹
Kinetic Energy;
K.E = 1/2 mv²
Putting values,
For CO,
K.E = 1/2 (0.028 Kg/mol) (477 m/s)²
K.E = 1/2 (0.028 Kg) (227529 m²/s²)
K.E = 3185 Kg.m².s⁻²For CO₂
,
K.E = 1/2 (0.044 Kg/mol) (380 m/s)²
K.E = 1/2 (0.044Kg) (144400 m²/s²)
K.E = 3176 Kg.m².s⁻²For SO₃
,
K.E = 1/2 (0.080 Kg/mol) (282 m/s)²
K.E = 1/2 (0.080 Kg) (79524 m²/s²)
K.E = 3180 Kg.m².s⁻²
Answer:
1.29 M
Explanation:
since it's a dilution, the new concentration must be less than 2.1 M
c1V1 = c2V2
c2 = c1V1/V2 = (2.1 M×215 mL)/350 mL = 1.29 M