A 4
B 6
C Be
D 10
E 22
F Ne
Explanation:
From the given table, we can simply complete the given table by identifying the meaning of each column header.
- Number of protons in an atom is the number of positively charged particles in the nucleus of the atom. Protons are positively charged particles in an atom.
- The number of neutrons are the number of neutrally charged particles occupying the nucleus of an atom.
- Atomic number is another term for the number of protons in an atom.
- Mass number is the sum of protons and neutron in an atom.
- The symbol of an element is used represent a particular atom.
Mass number = number of protons + number of neutrons
Atomic number = number of protons = number of electrons in atoms.
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Mass number brainly.com/question/2597088
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The initial number of moles of the unknown acid (HA) is equal to the final amount of the number of moles of the known base (NaOH) because they fully consumed each other.
<h3>What is neutralization reaction?</h3>
Neutralization reactions are those reactions in which acids and bases reacts with each other for the formation of water and salt.
Acids reacts with base to form salt means all gets consumed by each other so the initial moles of an unknown acid is equal to the final moles of the known base.
And reaction between them is shown as:
HA + NaOH → NaA + H₂O
Hence acids and bases fully consumed each other that's why we can calculate the moles of unknown substance.
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Answer: Please see answer below
Explanation:
Mecury vapor lamp is better to use than Sodium vapor light, this is because because
---The Filaments of the lamp in sodium emit fast moving electrons, which causes valence electrons of the sodium atoms to excite to higher energy levels which when electrons after being excited, relax by emitting yellow light which concentrates on the the monochromatic bright yellow part of the visible spectrum which is about 580-590 or about (589nm) which will fall incident on the calibrations making it difficult to see
While
In Mercury vapor lamp, The emitted electrons from the filaments, after having been excited by high voltage, hit the mercury atoms but the excited electrons of mercury atoms relax and emits an ultraviolet uv invisible lights falling on the mecury vapour lamp to produce white light covering a wide range of (380-780 nm) which is visible that is why it is used for calibrations purposes in lightening applications.
I only identify decomposition
The most accurate way to measure a dry ingredient like flour, sugar or chocolate chips is in terms of its weight, which is measured in regular ounces.
