Answer:
transverse waves, motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance.
Cl because it gains electron and become negatively charged
Answer: The mass of 45.0 L of at 87.0° C and 750 mm Hg is 56.605 g.
Explanation:
Given: Volume = 45.0 L
Temperature = = (87.0 + 273) K = 360 K
Pressure = 750 mm Hg (1 mm Hg = 0.00131579 atm) = 0.98 atm
Formula used to calculate moles is as follows.
PV = nRT
where,
P = pressure
V = volume
n = no. of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into above formula as follows.
Moles is the mass of a substance divided by its molar mass. So, mass of (molar mass = 37.99 g/mol) is calculated as follows.
Thus, we can conclude that the mass of 45.0 L of at 87.0° C and 750 mm Hg is 56.605 g.
Answer:
The wavelength of the light passing through it. (Ans B).
Explanation:
The refractive index of a substance is defined as the ratio of the speed of the light present in the vacuum to the speed in the medium. Refractive index of a substance is called as a dimensionless number that helps to describe how fast light will travel through the substance. It is described as:
N = C/V,
Where C is known for the speed of the light in vacuum, and V is known as the phase velocity of light which is found in medium.
Answer:
(NH4)2Cr2O7
Explanation:
Hope this somehow helped.