Answer:
b option
Explanation:
H2O has a tetrahedral arrangement of molecules or an angular geometry. This is mainly because the repulsion from the lone pair combination is more than bond-pair repulsion.
Answer:
A. They must be kept separate from moisture and oxygen
Explanation:
Alkali metals refers to a group of chemical elements in the periodic table. It is the common name given to Group 1 elements (excluding hydrogen). They are generally metallic in nature with physical properties like shining lustre, silvery in appearance etc. Alkali metals include lithium, Pottasium, Sodium, Rubidium etc.
One important chemical property of alkali metals is their high reactivity i.e. they tend to react quickly with other substances. For example, alkali metals react vigorously with water to form hydroxides. They also react with oxygen to form oxides. Due to this highly reactive properties, they are kept or stored away from moisture (water) and oxygen (present in air).
Answer:you killed a person
Explanation:that is a example
Answer:
C3H3O
Explanation:
Now, what we need to do is to divide the percentage compositions by the relative atomic masses.
The relative atomic mass of carbon 12, the relative atomic mass of hydrogen is 1 while the atomic mass of oxygen is 16.
We now do the divisions as follows:
Carbon = 63.15/12 = 5.2625
Oxygen = 31.55/16 = 1.971875
Hydrogen = 5.30/1 = 5.30
Now,we now divide by the smallest I.e that of oxygen.
Carbon = 5.2625/1.971875 = 2.668
Oxygen = 1.971875/1.971875 = 1
Hydrogen = 5.3/1.971875= 2.688
We can round up the ratio of carbon and hydrogen to 3.
Thus, the empirical formula is C3H3O
The answer is cumulus.
Stratus clouds often low and sometimes confused for fog. Cirrus clouds are thin and wispy.
