N an exothermic reaction, what is true of the enthalpy?

A. It has increased.

B. It has decreased.

C. It has remained unchanged.

D. It has, at minimum, doubled.

555.0 g of KNOwas used to create a 2.7M solution. What is the volume of the solution?

Which of the following organelles is best compared to a post office? 1. Endoplasmic reticulum 2. Golgi apparatus 3. Nucleus 4. Cell wall

A student is designing a device that can be used for communication. Which TWO waves on the electromagnetic spectrum should the student use? gamma rays X-rays ultraviolet waves microwaves radio waves

Enter an equation to show how HC2O4- H C 2 O 4 - can act as an acid with HS- H S - acting as a base.

Illustrate the phases in a homogeneous solution. A) Both solute and solvent are in the same phase in a homogeneous solution. Eliminate B) In a homogeneous solution, the solute and solvent are in different phases.

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