24
12
Just divide the number of hours by 24, to get the number of days. Then, divide the number of days by 7, to get the number of weeks. You can also divide the number of hours directly by (24 x 7).
Just multiply the number of days by 24.
Divide the number of yours by 24.
24
Eight of them.
24 times Avogadro's number (6.022 x 10 to the 23).
61
24
12
A Chromium atom with the atomic number 28 has 28 protons, and a Chromium atom with the atomic number 24 has 24 protons. The number of protons in an atom is equal to its atomic number.
There are infinitely many of them: all integers which are less than 24.
Divided by, is like saying how many groups are there. E.g. 24 divided by 4 = how many groups of 4 are there in 24, so a smaller number would equal more groups to fit into the larger number.
Number of neutrons = Mass number - atomic number = 63 - 24 = 39
Just divide the number of hours by 24, to get the number of days. Then, divide the number of days by 7, to get the number of weeks. You can also divide the number of hours directly by (24 x 7).
12 and 24 have an LCM of 24. There are many other possibilities.