Which element has an ion that is smaller than an ion of calcium? potassium strontium cesium magnesium

The specific heat capacity of concrete is small this means that

0,245 kg of gas with a density of 1,2 kg/m is compressed adiabatically from a pressure of 150 kPa to a pressure of 800 kPa. R = 0,293 kJ/kg. K and Cp = 1,005 kJ/kg. K. Calculate the following: 2.1 The adiabatic index 2.

A substance has a volume of 10.0 cm3 and a mass of 89 grams. What is its density?

The combustion of propane may be described by the chemical equation C 3 H 8 (g) + 5 O 2 (g) ⟶ 3 CO 2 (g) + 4 H 2 O (g) How many grams of O 2 (g) are needed to completely burn 80.9 g C 3 H 8 (g) ?

A base A. has a low pH in solution. B. turns red litmus paper to blue. C. releases hydrogen ions in solution. D. has more hydrogen (or hydronium) than hydrogen ions.

8 l of water at 19 ∘c are mixed with 1.1 l of water at 47 ∘c in an insulated container. what is the final temperature of the system? express your answer in ∘c

How is wind deflation different from wind abrasion?

What is the pH of a solution with a hydronium concentration of 2.88 * 10-2 M?

Which of the following characteristics is fixed, or definite, for all states of matter? volume shape mass energy

Describe a change caused by kinetic energy as well as a change caused by potential energy.