How is heat transferred when a person holds a pen that is already at body

temperature?

Describe the number of neutrons in atom of cl-37

The combustion reaction described in part (b) occurred in a closed room containing 5.56 10g of air originally at 21.7°C. Assume that all of the heat produced by the reaction was absorbed by the air (specific heat = 1.005 J / (g. °C)) in the room.

Systematic or Random Error? - This type of error affects overall accuracy but does not necessarily affect precision. This type of error affects precision but does not necessarily affect overall accuracy.

According to periodic table which elements has seven valence electrons

How many neutrons does sodium have? What is the chemical symbol for sodium? How many protons does sodium have? How many electrons does it have in the n = 2 orbit?

Why won't water reform to an ice cube if you freeze it?

For what reasons can a theory be changed

Explain how changes in pressure affect the rate and yield of ammonia produced

What volume of 20 mg/L dye would be required to make 50. mL of. 10 mg/L dye?

A weather balloon at Earth's surface has a volume of 3.9 L at 299 K and 763 mmHg. If the balloon is released and the volume reaches 4.13 L at 720 mmHg, what is the temperature? Answer in units of K.