There are a total of 11 elements that have a density greater than 0 and less than 1 g/cm³ at standard temperature and pressure. These elements include lithium, sodium, potassium, rubidium, cesium, francium, hydrogen, helium, and a few others in the lighter noble gases. Most of these are alkali metals or noble gases.
Just count them - there are not THAT many of them.
Infinite
Five.
Six
There are 18.
iron is 7.9 times greater than water
You can't do it from this information. You don't know if it is made from elements or compounds, and the density of a compound has nothing to do with that of its elements. Even if you do know it's made from elements there are far too many possible combinations.
calcium
it bonds with many elements but it is less reactive than the rest of the halogens
Many metals such as iron, lead, and gold have a greater density than water and will sink when placed in water. Other examples include platinum, mercury, and uranium.
The question cannot be answered because is does not specify great than what or less than what. Greater then -5 and less then -5 make no sense.
The prime numbers that are greater than 80 and less than 100 are 83, 89, and 97.
Twelve numbers exactly are greater than 76 and less than 89.
Infinitely many.
3 composite numbers, 21, 22, and 24, are greater than 20 but less than 25.
There are 15 composite numbers greater than 50 but less than 70
Oil is less dense Because its particles aren't as close together weighing it down. Water particles (H2O) are closer together (making the substance more dense) because they "want" to hydrogen bond with each other, which