The two ends of a solenoid act like

a. electrons.

b. a compass needle.

c. a circuit.

d. poles.

You weigh a 24K gold chain and find that it weighs 400 grams. Determine home many moles of gold atoms you have

When sodium metal is added to water, the following reaction occurs: 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g) What is the theoretical number of moles of hydrogen gas should be produced when 0.068 mol of sodium metal reacts? a. 1.0 mol H2 b. 0.

Qué les sucede a las moléculas en el suelo cuando la temperatura del suelo aumenta?

Why do mentos fizz up and pop right out of a coke bottle

When objects like horseshoe are left outside over time, the iron in them will react with oxygen to produce rust. Is this a chemical property of iron?

Several scientists are working together to study the change in the number of whales born each year along the northern coast of California. What is the controlled parameter

Which type of reaction is C12H22O11 → 12C + 11H2O? synthesis decomposition oxidation combustion

At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.184 s^-1? Suppose a vessel contains Cl_2 O_5 at a concentration of 1.16 M. Calculate the concentration of Cl_2 O_5 in the vessel 5.70 seconds later.

When your heart doesn't know what it wants ... what do you do?

Cellulose, chitin, and peptidoglycan function as structural molecules and are extraordinarily resistant to degradation and decay. which structural feature is most directly responsible?