The density of gold is approximately. 1785 g/L. What is the mass of a sample of helium that occupies 50.0 L of space? Round your answer to the correct number of significant figures. 1.00 g 9.00 g 50.0 g 280. g

How many atm are in 1520mmHg

Write 4 testable questions that doesn't involve living animals?

which two statements explain how the uneven heating of the earths surface affects earths weather patterns

The radioisotope cesium-137 has a half-life of 30 years. a sample decayed at the rate of 544 counts per minute in the year 1985. in what year will the decay rate be 17 counts per minute?

After having harvested a wild turkey, what is the best and safest way to carry out of the woods? A. Covered up with a Black plastic bag B. Uncovered and held by its feet C. Wrapped in camouflage colored cloth D. Wrapped in an orange bag or cloth

The rate constant of a reaction is 4.7*10-3 s-1 at 25°C, and the activation energy is 33.6 kJ/mol. What is k at 75°C?

What are the pros of using steel?

Cation a has a + 3 charge and is small. cation b has a + 1 charge and is large. which is more likely to occupy negatively charged sites on a clay mineral given equal concentrations in solution? cation a cation b they are the same

Show your work, including units, for the following series of calculations: a. How many moles of Al are in 1.25 g of Al? b.

An aqueous solution at 25 °C has a pOH of 12.42. Calculate the pH. Round your answer to 2 decimal places