We calculate as follows:
We first change <span>the percentages to mole fractions by moving the decimal two places to the left.
</span>N-14 (14.003amu)(0.99632) = 13.9515amu
<span>N-15 (15.000amu)(0.00368) = 0.0552amu
</span>
Total = <span>14.0067 amu -------> OPTION B
Hope this answers the question. Have a nice day.
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Baking soda is a bicarbonate, which means that each molecule of baking soda
contains a sodium atom, a H atom, an O2 atom, and a CO2 molecule.
Vinegar contains acetic acid, and each molecule contains a H atom, and an acetate ion.
When they're combined, the hydrogen atom in the acetic acid meets up with the H and O2 atoms in the baking soda to form a molecule of water, while the acetate ion grabs onto the sodium atom and forms a salt, sodium, acetate. The CO2 molecule, free of its other chemical bonds, can now escape, and bubbles form as a gas.
Answer:
Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.
Explanation:
The mass number is given at the top left of the elements symbol, for example, sodium has a mass number of 23.
Sodium (Na) square from the periodic table. The mass number (23) is top-left. The atomic number (11) is bottom-left.
We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons.
The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).
Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.
Hey there,
119.84 degrees c is your answer.
Hope I Helped!
Have a great day!
Answer:yes because due to ionization atom makes chemical bonds with other atoms, which makes change in the properties of atoms
Explanation:
