What is the name for the elevation difference between two adjacent contour lines

The following forces act on an object: 3N left, 2N up, 1N right, 2N down. What is the total force on the object? Give the size and direction.

Which is the correct description of a molecule? it contains two or more elements bonded together. it is an electrically charged atom. it contains more than one atom bonded together by shared electrons. it is the smallest unit of matter?

Examine the reaction. NH4OH (aq) →H2O (l) + NH3 (g) What coefficients will balance the equation? A) 1, 1, 1 B) 3, 3, 4 C) 2, 1, 2 D) 1, 2, 2

Three solutions have the following pH values: Solution A: pH = 11 Solution B: pH = 10.4 Solution C: pH = 8.2 Which solution has the smallest Kb? a) A b) B c) C d) Impossible to determine

How can sulfur acid be both a result and a cause?

Calculate the moles of new H₂ O₂ using the balanced formula below and the average moles of KMnO₄ from calculation #2. The average moles of KMnO₄ is 0.90mol. 2KMnO₄ + 5H₂O₂ + 3H₂SO₄ → K₂SO₄ + 2MnSO₄ + 8H₂O + 5O₂ Edit: I got 2.

How many grams of CaC2 would make 23.6g C2H2?

Shane performed the following trials in an experiment. Trial 1: Heat 30.0 grams of water at 0 °C to a final temperature of 40.0 °C. Trial 2: Heat 40.0 grams of water at 10.0 °C to a final temperature of 40.0 °C.

According to the law of conservation of ___ in an isolated system the initial total momentum before a collision equals the final total momentum.

What is the correct name fore this formula Al2O3