Which of the following is the best description of a chemical reaction

What mass of sucrose (C12H22O11) should be combined with 488 g of water to make a solution with an osmotic pressure of 8.00 atm at 290 K? (Assume the density of the solution to be equal to the density of the solvent.)

What will be the product (s) of a single replacement reaction in which the reactants are Fe and 2 HCl? A. H2Cl2Fe B. FeCl2 + H2 C. FeH2 + Cl2 D. Fe + H2 + Cl2

What process puts water vapor into the atmosphere?

The accepted value for the heat of combustion of methane is 890 kJ/mol. Explain why the experimental data might differ from the theoretical value.

Choose all that correctly complete the statement. Chemical reactions can ... A. create products more complex than the reactants. B. break down reactants into simpler products. C. give off energy as heat ... D. change one element into another element.

Q5.6. if calcium ions, each of which has a charge of + 2 (ca2+), moved out of a neuron, and no other ions were moving, what would be true?

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.

What is the intermolecular Force that causes water molecules to be attracted to each other? Ionic Bond Polar covalent bond Nonpolar covalent bond Hydrogen Bond What is the molecular geometry of a water molecule?

Justin Bleeber is a lazy young man and decides to burn a pile of leaves instead of bagging it. The pile of leaves weighed three pounds before being burned. After the leaves are burned the leftover ash weighs half a pound.

A diatomic gas has the molar mass 38.00 g/mol. What is a possible formula