For a standard H-R diagram, what are the stars in the lower left region of the diagram

Planet z-34 has a mass equal to 1/3 that of earth, a radius equal to 1/3 that of earth, and an axial spin rate 1/2 that of earth.

Calculate the mass of oxygen (in mg) dissolved in a 4.97 L bucket of water exposed to a pressure of 1.08 atm of air. Assume the mole fraction of oxygen in air to be 0.21 and the Henry's law constant for oxygen in water at this temperature to be 1.

For many weak acid or weak base calculations, you can use a simplifying assumption to avoid solving quadratic equations. Classify these situations by whether the assumption is valid or the quadratic formula is required. a. [HA]=0.01M Ka=1x10^ - 4: b.

Your family has planted a garden. You observe that some of the plants in the garden have teeth marks in them. What is eating the plants?

Carbon dioxide makes up approximately 0.04% of Earth's atmosphere. If you collect a 2.7 L sample from the atmosphere at sea level (1.00 atm) on a warm day (25 ∘C), how many CO2 molecules are in your sample?

The relative abundance of the two isotopes is 99.9999 percent and 0.0001 percent, respectively. 1.0066 amu 3.0160 amu 3.5903 amu 4.0026 amu

Which real world scensories below respent physical changes check all that apply

Why are bacteria are able to evolve rapidly

If 20.0 g of Pb transfers 4950 J of energy into 50.0 g of water, how much would the temperature of the water change?

Which examples demonstrate responses to stimuli? Check all that apply. A. A Venus flytrap closes on a fly. B. Large amounts of bacteria are present in a soil sample. C. A plant grows toward the sunlight. D. A rabbit has both white and black fur. E.