A chemical reaction occurred in a closed container. Which is true of the equation of the reaction as shown below? N2 + 3H2 -> 2NH3 A. The mass and molecules of the reactants equal the mass and molecules of the products.

B. The volume and mass of the reactants equal the volume and mass of the products.

C. The molecules and atoms of the reactants equal the molecules and atoms of the products.

D. The atoms and mass of the reactants equal the atoms and mass of the products.

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

Which other elements contain the same number of outer electrons as sodium

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.