Bill dropped in to see Sarah. How long is it appropriate for him to stay?

15 minutes

30 minutes

one hour

A sample of a compound contains only the elements sodium, sulfur, and oxygen. it is found by analysis to contain 0.979 g na, 1.365 g s, and 1.021 g o. determine its empirical formula.

15. Which is not a zone in the three-layered structure of the ocean relating to density? īptive) O surface mixed zone O intertidal zone O deep zone O transition zone

The Atomic Mass of Al is 26.98154 g/mol. Is it possible to have 5.0 * 10^-25 g of Al? Explain.

Give an example of how a functional group can affect the properties of an organic compound.

3. The light given off by an electric discharge through sodium vapor is O of a single wavelength O an emission spectrum O a continuous spectrum O white light

Given 4.8 moles of a gas in a 1.8 L container, if the temperature is found to be 31 degrees Celsius, what is the pressure of the gas? (The ideal gas constant is 0.0821 L · atm/mol · K and 1 atm = 760 torr.) 6.79 torr 66.55 torr 6.79 x 100 atm 6.

Write this number to two significant figures in scientific notation. Use the "^" character to indicate the exponent. 4.253

AN atoms nucleus contains it's protons and electrons true or false

What is the difference between parent geometry and actual geometry

The volume of a gas is halved and the temperature is unchanged. The pressure of the gas is