An unknown element has an atomic number of 6 and an atomic mass of 13. based on this information what is the identity of this unknown element

Why there are only seven crystal systems? why not other number

Why does analyzing character motivation matter?

A 22.5-g sample of ice at - 10.0°C is mixed with 110.0 g water at 85.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities for H₂O (l) and H₂O (s) are 4.18 J/g･°C and 2.

Which of the following is a characteristic of reliable scientific study? It is based on others' experience. It is based on personal experience. It is supported by a large media house. It is supported by empirical evidence.

Convert 345 cm2 to the equivalent number of square feet (ft2)

For the separation of the unknown mixture, you are instructed to isolate the amine followed by the acid and finally the neutral. Does the order matter? If not, what other orders could be followed?

As ice melts and changes from solid to liquid, A) entropy increases. B) kinetic energy decreases. C) an exothermic reaction occurs. D) the random movement of molecules remains constant.

What volume of 0.480 m koh is needed to react completely with 15.8 ml of 0.150 m h2so4? assume the reaction goes to completion?

Which sample of water contains particles having the highest average kinetic energy?

Use the terms magnetic field and magnetic pole in a sentence