Question 1

Write the next three numbers in the sequence

2, 10, 50, 250,-

The ability of sodium chloride to dissolve in water is an example of a

Two 20.0-g ice cubes at - 13.0 °c are placed into 255 g of water at 25.0 °c. assuming no energy is transferred to or from the surroundings, calculate the final temperature, tf, of the water after all the ice melts.

A drop of water from a special dropper is 3ml. How many liters is this this. A (30) B (0.3) C (0.03) D (0.003)

What is most believed by most scientists about the age of our solar system.

What type of radiation has the least amount of energy? A. alpha radiation B. Beta radiation C. Gamma radiation D. X-rays

Which trends are observed when the elements in Period 3 on the Periodic Table are considered in order of increasing atomic number? (1) The atomic radius decreases, and the first ionization energy generally increases.

The enthalpy of formation of MX is ΔHf° = - 525 kJ/mol. The enthalpy of sublimation of M is ΔHsub = 139 kJ/mol. The ionization energy of M is IE = 437 kJ/mol. The electron affinity of X is ΔHEA = - 313 kJ/mol. (Refer to the hint).

Which group of elements could you not use in making fireworks?

A 5.0 M solution of HCL in water has a proton concentration of _M

How many moles are in 25.5 grams of Silver, Ag?