The distance between the Earth and the Sun is approximately 1 AU (Astronomical Unit). Therefore, option D is correct.
One AU is defined as the average distance between the Earth and the Sun, which is about 93 million miles (150 million kilometers). It is a convenient unit of measurement for distances within our solar system.
A parsec is a unit of distance used for objects outside our solar system, equal to approximately 3.26 light-years. One kiloparsec is equal to 1,000 parsecs, or approximately 3,260 light-years. Therefore, neither A nor B is the correct answer.
A light-year is the distance that light travels in one year, which is approximately 5.88 trillion miles (9.46 trillion kilometers). Therefore, C is also not the correct, as the distance between the Earth and the Sun is much less than one light-year.
Therefore, the correct answer is D. 1 AU
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(B) calcium and water
(C) zinc and hydrochloric acid
(D) zinc and concentrated nitric acid
(E) steam and red hot iron
To calculate this, we need the molar mass of water which is obtaine by adding the molar masses of the elements. For H2O, the molar mass is 18.02g/mol. Then, from the amount given which is 1 gram of H2O we divide the molar mass which yields to 0.06 mol of water.
B. What substances make up an eggshell?
C. Which birds have the most beautiful feathers?
D. Which type of bird makes the best pet in an apartment?
After reading a book about parrots, Tani wants to learn more about them. The question that could be answered through scientific investigation is letter B, ‘What substances make up an eggshell?’ The other choices cannot be answered through scientific investigation.
Answer:
B
Explanation:
Answer:
true
Explanation:
The Lewis structure of HOClO consists of a hydrogen atom bonded to an oxygen atom, which is in turn bonded to a chlorine atom. Two chlorine atoms are also bonded to each other in the structure.
The Lewis structure of HOClO can be determined using the concept of valence electrons. Oxygen (O) has 6 valence electrons, Chlorine (Cl) has 7 valence electrons, and Hydrogen (H) has 1 valence electron. Based on this, the Lewis structure of HOClO can be represented as follows:
H - O - Cl - O
Where the oxygen atom is bonded to the hydrogen atom and the chlorine atom, and the two chlorine atoms are bonded to each other, resulting in a single bond and two double bonds.
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