They are all covalent compounds as they are made up of nonmetals. Ionic compounds are made up of a nonmetal and a metal. Some of the compounds are organic because they contain carbon so they cannot all be classified as inorganic. CH4, which is methane is reactive so this makes D false.
The correct answer is B) covalent bonds.
Answer:
The mass of the cat is 4.534 kg
Explanation:
Given
gravitational potential energy 
= 88.9 J
Height h = 2.0 m
To find: mass of the cat
We know that the gravitational potential energy is given by
= mgh, where
m = mass of body
g = acceleration due to gravity = 9.8 m/
h = height above ground
Hence , mass m = 
= 
= 4.534 kg
Hence the mass of the cat is 4.534 kg
Answer:
a. burning of fossil fuel
Explanation:
Greenhouse effect is the trapping of the sun infrared rays in the outermost layer of the earths atmosphere due to the accumulation of some harmful gasses. This gases depletes the ozone layer
The major contributor of greenhouse gases is the burning of fossil fuels. Carbon dioxides are released into the atmosphere and leads to global warming and climatic changes per time
We have the following values used to solve this:
For ⁴₂He:
No of protons: 2
No of neutrons : 2
Mass of proton: <span>1.00728 amu
Mass of neutron: </span><span>1.00867 amu
Atomic mass: </span><span>4.002603 amu
The formula to solve for the mass defect is:
md = (mp + mn) - mo
md = (2x</span>1.00728 + 2x1.00867) - 4.002603
md = 0.029297
Therefore, the mass defect is 0.029297 amu
