Penguins cannot live in the desert. Which of the following is the most important limiting factor? temperature light soil quality population density

How many particles are in 4.5 moles of beryllium carbonate

A sample of gas occupies a volume of 50.0 milliliters in a cylinder with a movable piston. The pressure of the sample is 0.90 atmosphere and the temperature is 298 K. What is the volume of the sample at STP? a. 41 mL b. 49 mL c. 51 mL d. 55 mL

What is the volume in liters of 48.0g O2? A) 11.2L B) 22.4L C) 33.6L D) 67.2

Why should you avoid touching metal objects during a thunderstorm?

What is the oxidation state of phosphorus in HPO3?

149.3 g of H2O at 95 ◦C is poured over 412 g Fe at 5 ◦C in an insulated vessel. What is the final temperature? The specific heat of H2O is 4.184 J / g· ◦C, the specific heat of Fe is 0.444 J/g · ◦C. Answer in units of ◦C.

The chemical equation of photosynthesis includes 6O2. What does the small number after the O represent?

A sample of copper with a mass of 63.5g contains 6.02 x10 23 atoms calculate the mass of a single copper atom

Explain what is in a buffer. Discuss the function of a buffer. How will pH change when small amounts of acids or bases are added to the buffer solution?

Muscles cells are called?