Why don't roller coaster cars return to the

same height at which they started?

A. They are broken.

B. They are safer this way.

C. They transfer some of their energy into thermal energy and sound energy.

Digital information is a code consisting of zeroes and ones. what is the term for this type of information.

Scientific inquiry attempts to search out, describe, explain, and predict things that happen in nature. Which of the following best describes how progress is made in scientific inquiry

After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body? Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being transported to her lungs.

For the reaction A + B - ⇀ ↽ - C + D, assume that the standard change in free energy has a positive value. Changing the conditions of the reaction can alter the value of the change in free energy (Δ G).

Predict the formula for a compound made from X and Y2-.

How many mL of 50% (v/v) alcohol should be mixed with 10% alcohol to obtain 50mL of 35% (v/v) alcohol? Round to the hundredths place.

What is an example of a precipitation reaction and addition reaction?

How many grams of nh3 can be produced from 3.72 mol of n2 and excess h2.

Famous New Zealand scientist Ernest Rutherford was awarded a Nobel Prize in which field?

Which molecules is amphoteric? A) NH4+ B) H2O C) H2CO3- D) H2SO4