Density = 968 g/cm³
mass = 250 g
Volume = ?
Therefore:
D = m / V
968 = 250 / V
V = 250 / 968 => 0.26 cm³
Answer C
Einstein's theory of special relativity sets of the speed of light, 186,000 miles per second (300 million meters per second). ... The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light.
Answer:
The right answer to this is (b)
The answer would have to be ummm 2
Answer:
19.3 moles
Explanation:
In order to calculate the number of moles of Chlorine gas from the volume, we have to calculate its mass from its known density using the formula:
Density (g/L) = mass (g) /volume (L)
Density of Chlorine gas= 3.2g/L
Volume = 428L
3.2 = mass/428
mass = 428 × 3.2
mass = 1369.6g
Using mole = mass ÷ molar mass
Molar mass of chlorine (Cl2) = 35.5 × 2
= 71g/mol
mole = 1369.6 ÷ 71
mole = 19.2901
mole = 19.3 moles
