Which is a pure substance?

air

nitrogen

apple juice

tap water

In the formula for the compound XCl4, the X could represent (1) C (3) Mg (2) Η (4) Zn

Nickel can be plated from aqueous solution according to the following half reaction. How long would it take (in min) to plate 29.6 g of nickel at 4.7 A? Ni2 + (aq) + 2 e - - -> Ni (s) 3.5*10^2 min (A) 5.9 * 10^2 min (B) 1.7 * 10^2 min (C) 6.

1. What is the mass of 105.00 moles of H20?

Which of the following is a unit for volume? m3 km cg dkm

The ads informs you of the proper first aid actions needed in case of exposure to chemical

Describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and cause pollution.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?

Jack wants to know if it takes longer for warm water to freeze into ice cubes than cold water, so he performed the following experiment. Jack placed 50 mL of water in the refrigerator and allowed it to cool to a temperature of 4°C.

How to calculate average concentration

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.