Answer & explanation:
SI units are the metric system and the most commonly used measurement system in the world. Some examples of these units you may find around your home are:
Pencil lead size measured in millimeters. (Ex. 0.7mm)
Microwaves, you put your food in for a number of seconds. Any other device used to time things also does this, such as a stopwatch.
A ruler or tape measure will measures in centimeters or meters usually.
A balance or scale may be used to measure mass in grams.
Solid products like antiperspirant, lipstick and other solid makeup products are usually measured in grams.
Solid foods such as butter are usually measured in grams.
Information about the contents of food found on the nutrition facts label are usually measured in grams or milligrams. (Ex. 3g of saturated fat)
The viscosity of a liquid is a measure of its resistance to flow. Water, gasoline, and other liquids that flow freely have a low viscosity. ... The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid.
Explanation:
6/t1=4/293= 1750/4 =439.5-273=166.5
Answer: The ratio of the number of oxygen molecules to the number of nitrogen molecules in these flasks is 1: 1
Explanation:
According to avogadro's law, equal volumes of all gases at same temperature and pressure have equal number of moles.
According to avogadro's law, 1 mole of every substance contains avogadro's number 
of particles.
Thus as oxygen and nitrogen are at same temperature and pressure and are in equal volume flasks , they have same number of moles and thus have same number of molecules.
The ratio of the number of oxygen molecules to the number of nitrogen molecules in these flasks is 1: 1
