Alll are correct. Matter is literally everywhere
Answer:
6.214 degrees-mL/gdm
Explanation:
The specific rotation α' = α/LC where α = observed rotation, L = length of tube and C = concentration of solution.
Given that α = 1.74, L = length of cell = 50 mm = 0.50 dm and C = m/V where m = mass of glyceraldehyde = 5.60 g and V = volume = 10 ml
So, C = m/V = 5.60 g/10 ml = 0.560 g/ml
Since α' = α/LC
substituting the values of the variables into the equation, we have
α' = α/LC
α' = 1.74/(0.50 dm × 0.560 g/ml)
α' = 1.74/(0.28 gdm/l)
α' = 0.006214 °mL/gdm
α' = 6.214 °mL/gdm
α' = 6.214 degrees-mL/gdm
Answer:
31.75 amu
Explanation:
Using Graham's equation of effusion as depicted below:
V1/V2 = √m2/√m1
Where; v1 = speed of neon gas
V2 = speed of unknown gas
m1 = molar mass of neon gas
m2 = molar mass of unknown gas
According to this question: v1 = 1.26x, m1 = 20amu, v2 = 1x, m2 = ?
Hence,
1.26x/1x = √m2/√20
1.26/1 = √m2/4.472
√m2 = 4.472 × 1.26
√m2 = 5.635
m2 = 5.635²
m2 = 31.75 amu
Therefore, the molar mass of the unknown gas is 31.75 amu.
Ammonia is a molecule that consists of a single nitrogen atom and three hydrogen atoms. The chemical formula is NH4. The atoms within the molecule have covalent bonds. The main type of attractive force between ammonia molecules are hydrogen bonds due to the three nitrogen-hydrogen bonds.
