How many valence electron do xenon have

All of the following are possible sources of error in a scientific investigation except for O measuring materials such as mass and volume incorrectly. o recording experimental data incorrectly. o having a constant in your experiment.

Which structures are the basis of life for all living things? A. nuclei B. muscle tissues C. cell walls D. cells

Determining nitrogen balance in the clinical setting can be very valuable. To determine a client's state of nitrogen balance, a 24-hour urinary urea nitrogen collection is done. What do you also need to do?

Which force keeps the planets revolving around the Sun? A. weak nuclear force B. gravitational force C. electromagnetic force D. strong nuclear force

Data that shows consistent, regular, repetitive form displays a pattern?

12.23 g of ammonia (NH3) are dissolved in enough water to make 560.0 mL of solution. How many moles of NH3 are added to the water?

According to the ph scale, what is the approximate ph of acid rain? a. 4.0 b. 4.5 c. 5.0 d. 5.5

You find a little bit (0.150g) of a chemical marked Tri-Nitro-Toluene, and upon combusting it in oxygen, collect 0.204 g of CO2 and 0.030 g H2O (we'll assume that these are the products, along with nitrogen).

What reaction occurs when two amino acids are put together?

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains of water at. During the reaction of heat flows out of the bath and into the flask. Calculate the new temperature of the water bath.