Answer:
Volume = 10 cm3
Density = 2.3g/cm3
Explanation:
volume:
30ml - 20ml = 10ml = 10cm3
density:
density = mass/volume
23/10
2.3g/cm3
Answer:
water is visible to the naked eye
Explanation:
how many things do you have to list
Answer: The helium pressure is 799 torr.
Explanation:
It is known that 1 mm Hg is equal to 1 torr. As we are given an open-ended mercury manometer so, its pressure will also be equal to the atmospheric pressure which is given as 752 torr.
And, it is given that pressure of mercury level in the open arm is 47 mm above that in the arm connected to the flask of helium. Therefore, adding both the pressures we will get the pressure of helium as follows.
(752 + 47) mm Hg
= 799 mm Hg
or, = 799 torr
Thus, we can conclude that the helium pressure is 799 torr.
The frequency of the sound waves travel faster and more effectively in liquids than in air and travel even more effectively in solids.
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).