Answer: option a: 1,1,1
Explanation:
1) The chemical equation given is wrong. This is the right chemical equation
<span>CaCO3(s) → CaO(s) + CO2(g)?
2) To balance you start by counting the number of atoms of each element on both sides
element number of atoms conclusion
reactant side product side
Ca 1 1 balanced
C 1 1 balanced
O 3 1+2 = 3 balanced
3) Therefore all the elements are balanced and the coefficients are 1, 1, and 1.
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Answer: Either A or D
Geologists and paleontologists constructed the geologic table based on the relative positions of different strata and fossils, and estimated the time scales based on studying rates of various kinds of weathering, erosion, sedimentation, and lithification.
Answer: Refraction of light in water. When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction.
Explanation:
Answer:
"This conversions relies on the fact that a mole of gas at STP has a volume of 22.4 L. It is important to note, however, that if the conditions of the gas are different this conversion will NOT work. Under those conditions you must use the ideal gas law to convert between moles and liters."
Answer:
ii.
Explanation:
Isoelectric species are the species which have same number of electrons.
From the given options:-
are the isoelectric species.
All the three species have same number of electrons which is equal to 6.
Carbon has 6 electrons.
has 6 electrons.
has 6 electrons.