An electric clock in a classroom will not run if it not plugged into an electric outlet what does the clock get from the electric current from the outlet?

A) batteries

B) chemicals

C) energy

D) time of day

What types of questions can be answered through science and what questions are beyond the boundaries of science? Be specific and give examples to support your answer.

Calculate ΔrG∘ at 298 K for the following reactions. CO (g) + H2O (g) →H2 (g) + CO2 (g) 2-Predict the effect on ΔrG∘ of lowering the temperature for the reaction above.ΔrG∘ will decrease with decreasing temperature.

What are the two ways to measure the sand in a sand castle?

What is the pH of 1.5x10^-3M of NaOH?

Aluminium and phosphorus are close to one another in the Periodic Table but the P3 - ion is much larger than the Al3 + ion. Explain the reason for this change in size.

2. A compound with the following composition by mass: 24.0% C, 7.0% H, 38.0% F, and 31.0% P. what is the empirical formula

Why does the burning of magnesium ribbon start the reaction between iron oxide and aluminium when making iron?

Select all the elements that are in the same period as calcium potassium magnesium bromine scandium

Gas y effuses half as fast as o2. what is the molar mass of gas y?

A sample of gas has a mass of 0.555g. volume is 117 mL at a temperature of 85 degrees Celsius and a pressure of 0.99 atm. What is the molar mass of the gas?