Answer: B.
The rate of the nuclear reaction increases, but the rate of the chemical reaction remains the same
Explanation:
1) As pebbles are solid compounds, pour it into filter, it would extract every particle of pebbles.
2) Then, with the use of filter, we need to extract pepper from the compound.
3) Now, Add water 'cause we need to dissolve salt with it.
Hope this helps!
Answer:
1.6605 × 10⁻²³ g / atom , 9.99 amu
Explanation:
Atoms present in 1 mole = 6.022 × 10²³ atoms
Given that
Moles of common Eastern mole = 8.3 moles
So,
Atoms in 8.3 moles are:
8.3 moles = 6.022 × 10²³ × 8.3 atoms
Also,
Average mass = Mass of the sample / Number of atoms
Mass of sample = 83 g
Average mass = 83 g / 6.022 × 10²³ × 8.3 atoms = 1.6605 × 10⁻²³ g / atom
In amu :
1 amu = 1.66 × 10⁻²⁴ g / atom
So,
Average mass = 1.6605 × 10⁻²³ / 1.66 × 10⁻²⁴ amu = 9.99 amu
Answer is 5 tho idk why the options so weird. anyways u have to use the periodic table, check for the element which has 8 protons. this will be oxygen.
to calculate electrons, take 16-8 hence u will have 8 electrons.
qn said u have net charge of 3+. this means that u have to minus 3 from the electrons
so 8-3 = 5
