So that the experiment can be copied and tested over again
Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom<span> in amu, or </span>atomic mass units. Atomic mass<span> is the average</span>mass of all the isotopes of a certain type. It is a weighted average that takes into account the abundances of all of the different isotopes.The full chemical symbol for an element shows its mass number at the top, and its atomic number at the bottom. This symbol tells you that the chlorine atom<span> has 17 protons. It will also have 17 electrons, because the </span>number of protons and electrons in an atom is the same.The atomic number specifies how many protons an element has in its nucleus. In the periodic table<span> of the elements, elements are arranged in order of ascending atomic number. Isotopes are atoms that have the same number of protons but different numbers of neutrons.</span>
Answer:
40 Cal
Explanation:
Data provided in the question:
Protein present in the broccoli = 2.6 g
Carbohydrates present in the broccoli = 6 g
Fat present in the broccoli = 0.3 g
Now,
We know,
Energy provided by protein and carbohydrates = 4 Cal / g
and,
Energy provided by Fats = 9 Cal / g
Therefore,
Total nutritional energy content = ∑(Amount × Energy provided)
= ( 2.6 × 4 ) + (6 × 4) + (0.3 × 9)
= 10.4 + 24 + 2.7
= 37.1 Cal
rounding off the answer to nearest 5 ≈ 40 Cal
Sea levels<span> drop globally </span>during an ice age<span> (also called a glacial period) as seawater is taken up in the </span>ice<span> sheets. There is decreased evaporation </span>during an ice age<span> and therefore less rain. </span>Ice ages<span> (also called glacial periods) are therefore usually, but not always, associated with an increase in aridity (dryness). So its B. Hope this helps :))</span>
