A scientist performed an experiment using a wax candle and a large airtight glass container filled with oxygen. Nothing could get into or out of the glass container during the experiment. The scientist measured the weight of the unlit candle and the container to be 32 ounces at the beginning of the experiment. Then, she lit the candle. After a short time, the candle stopped burning and it appeared slightly smaller.What will the weight of the candle and the container be now that the experiment is over? A. The weight will be exactly 32 ounces because weight is always conserved in closed systems. B. The weight will be more than 32 ounces because burning the candle creates smoke. C. The weight will be less than 32 ounces because smoke weighs less than wax. D. The weight will be less than 32 ounces because burning the candle turns it into energy.Reset Submit

A scientist had a mixture of water and a liquid called benzene. The mixture had a weight of 5.5 ounces. The scientist used a special process called distillation to separate the water and the benzene into two separate containers. The weight of the water alone was 4.3 ounces. This data is summarized in the table below.Weight MeasurementsBefore Separation After SeparationWeight of Water and Benzene Weight of Water Weight of Benzene5.5 ounces 4.3 ounces not measuredWhat should the scientist expect the weight of the benzene alone to be? A. 5.5 ounces B. 3.1 ounces C. 1.2 ounces D. 4.3 ounces

Some students decided to do an experiment with a can of soda. They opened a 340 g can of soda and left it open for a day. They then measured the soda can and found it was 332 g. The uncertainty in the measurement was 2 g. They then poured some of the soda in a glass and observed that it was no longer fizzy. Which of these statements explain what happened during the experiment?*1 pointBecause the gas in the soda leaves the open soda can, increasing the mass of the systemBecause the gas in the soda leaves the open soda can, decreasing the mass of the systemBecause gases that surrounds the soda can takes in, increasing the mass of the systemBecause gases that surrounds the soda can takes in, decreasing the mass of the system

A student wants to design a simple investigation to prove that mass is conserved during a chemical reaction.Which of the following investigations will provide evidence the student needs to prove the claim that mass is always conserved in a chemical reaction?A Compare the mass of a candle before and after burning it.B Compare the mass of a piece of paper before and after tearing it.C Compare the mass of a piece of copper before and after melting it.D Compare the mass of a cup of water with a sealed lid and an Alka-Seltzer tab before and after adding the Alka-Seltzer tablet to the water.

An object weighs 10 N in air. When fully immersed in water, it weighs only 8 N. The weight of the liquid displaced by the object will be:

Formulate a hypothesis for the student's question."If a candle is contained in a metal holder then the time taken for the candle to burn will ____________ because ______________________________________________________________________ .