Which variable in unknown until the expirement is performed?

When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round your answers to two decimal places.) (a) What is the temperature of the drink after 40 minutes? 12.

What are the oxidation numbers of potassium, sulfur, and oxygen, respectively, in k2so4?

Which physical method can separate a mixture of steel ball bearings and marbles

0 L of a gas is at a temperature of 78°C. Find the volume of the gas at standard temperature.

Why is it o2 and not o? and what does the 2 stand for?

N2 (g) + 3H2 (g) - > 2NH 3 (g) Calculate the mass in g of Ammonia (NH3) if you react 10.0g of hydrogen with excess nitrogen. a.) 17.04 g b.) 84.4 g c.) 56.2 g d.) 85.2 g

Explain how you figure out the number of neutrons in Tellurium-128.

Water has a density of 1g/ml. what is the mass of the water if it fills a 10ml container?

The diameter of a carbon atom is approximately 144 pm. Assuming a nanocontainer has a simple cubic structure and have an edge length of 25 nanometers, how many carbon atoms are there on a single edge of a nanocontainer?

How can molecules with polar bonds be nonpolar?