Using the periodic table entry below, match the phrases with their corresponding values. 1. atomic number 96 2. atomic mass 54 3
2 answers:
1. Curium
2. xenon
3.the element with valance electron 4 and 2 is Tin and lead
4. Nickel . if when n=3 , the number of electrons is 18 , then the total number of electrons will be 28 ; because there will be 2 electrons in n=1 and 8 electrons when n=2 using the equation .Thus atomic number will be 28. The element with atomic number 28 is Nickel
5. Deuterium .Its an isotope of hydrogen. it has only one neutron
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Answer:
Explanation:
The definition of angular velocity is as follows:
where is the angular velocity, and
is the frequency.
Frequency can also be represented as:
where is the period, (the time it takes to conclude a cycle)
with this, the angular velocity is:
The period T of rotation around the sun 365 days, thus, the angular velocity:
if we want the angular velocity in rad/second, we need to convert the 365 days to seconds:
Firt conveting to hous
then to minutes
and finally to seconds
thus, angular velocity in rad/second is:
Answer:
Explanation:
One mole of a substance contains the same amount of representative particles. These particles can be atoms, molecules, ions, or formula units. In this case, the particles are atoms of titanium.
Regardless of the particles, there will always be <u>6.02*10²³</u> (also known as Avogadro's Number) particles in one mole of a substance.
Therefore, the best answer for 1 mole of titanium is D. 6.02*10²³ atoms.