What is the measure of how hot or cold the air is

A particular nuclide has a mass number of 21 and contains 11 neutrons. What element is it? a. hydrogen b. neon c. sodium d. scandium

When the particles of two objects have the same average kinetic energy, what do we know about those objects?

Which sequence describes the result of increasing the number of gas particles in a container

It requires1200 kg of coal to produce the energy needed to make 1.0 kg of aluminum metal. If a single soda can requires approximately 15 g of Al, what mass of coal would be needed to produce a 6-pack of cans?

When using the ideal gas constant value, R = 0.0821, in an ideal gas law calculation, the units of pressure may be expressed in units of atmospheres or kilopascals. TRUE FALSE

How might you identify hydraulic system

About how many elements are found on the periodic table? Question 8 options: 25 50 110 200

If JM = 5x - 6 and LM = 2x - 6, which expression represents JL?

5. The air rising cools as it reaches the top of which atmospheric layer? Troposphere Metrosphere Thermsphere none of the above

Looking at a net ionic equation how can i tell with reactant ions were oxidized