One similarity and one difference between an element and a mixture of elements

A student mixes 100 ml of 0.50 m naoh with 100 ml of 0.50 m hcl in a styrofoam® cup and observes a temperature increase of at,. when she repeats thisexperiment using 200mlof each solution, she observes a temperature change of at2.

In a particular gravimetric analysis, the precipitate of caso4 was weighed before it was completely dried. the likely impact of this error on the calculated moles of caso4 will be:

Macon is 50 miles from Atlanta. If the time of the trip increases, what happens to the speed? Question 8 options: A:It stays the same because the distance stays the same B: It decreases C: It averages out to the same speed. D: It increase

If you were designing a pot to cook spaghetti in, which parts would you make from good conductors of heat? which parts would you make from insulators? explain your answer.

What overall effect does adding a catalyst have on a chemical reaction? It increases pressure on the system. It increases reactant surface area. It lowers the activation energy that is needed. It lowers the concentration of reactants.

When the name of a molecule ends in - ose, the molecule is a

How many moles are in. 12 grams of gold.

When lithium reacts with bromine to form the compound LiBr, each lithium atom: (1) gains one electron and becomes a negativelycharged ion (2) gains three electrons and becomes a negativelycharged ion (3) loses one electron and becomes a

Based on what you know about matter, explain why the food coloring mixes at different rates

What does the variable A stand for in the Arrhenius equation? A. activation energy B. frequency factor C. rate constant D. reactant concentration