Which element is classified as a noble gas at STP?

hydrogen

oxygen

neon

nitrogen

Which examples would be found in Earth's biosphere? Check all that apply. bacteria gases oceans plants ponds

Which is an example of negative acceleration?

When is a sample of matter considered a pure substance?

What are the three simplest particles of iron

If 50,000. Joules are added to 5.00 kilograms of water at 12.0 degrees Celsius, what is the final temperature?

The heart is an example of which level of organization within an organism? O cell organ tissue organ system O O

NaOH+HCl--> NaCl+H2O what is the total number of grams of H2O produced when 116 grams of the product, NaCl, is formed?

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.