Which of the following instruments is used to measure air pressure?

a. Barometer

b. Thermometer

c. Anemometer

d. Hygrometer

A teacher wants to figure out the amount of a solution that is needed for a titration experiment in a class lab. The class has 15 students, and each experiment needs 50 mL of solution.

Give an example of a homogeneous mixture and an example of a heterogeneous mixture.

Whitch of the following is a true statement about the magnetic field between two magnets

Of the following examples of matter, which is an amorphous solid?

Hydrocarbons are compounds that contain (1) carbon, only (2) carbon and hydrogen, only (3) carbon, hydrogen, and oxygen, only (4) carbon, hydrogen, oxygen, and nitrogen, only

Using activated charcoal to separate heavy metals from water is a process known as scrubbing. True or False

If 119.5 g of iron is mixed with 279.50 g of copper (II) nitrate, what is the limiting reagent for the reaction?

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

What do a Am radio, Fm radio, television and cell phones have in common. A.) they were all invented in the same year B.) they were all invented by the same scientist C.

Consider the reaction: 2 NO (g) + 5 H2 (g) → 2 NH3 (g) + 2 H2O (g) A reaction mixture initially contains 5 moles of NO and 10 moles of H2. Which set of amounts best represents the mixture after the reactants have reacted as completely as possible?