Number of electrons in n=3

The isomerization reaction, ch3nc → ch3cn, is first order and the rate constant is equal to 0.46 s-1 at 600 k. what is the concentration of ch3nc after 0.20 minutes if the initial concentration is 0.30 m?

Given the thermochemical equation for photosynthesis, 6h2o (l) + 6co2 (g) → c6h12o6 (s) + 6o2 (g) δh = + 2803 kj/mol calculate the solar energy required to produce 5743 g of c6h12o6.

When positive externalities are present in a market?

The density of ice is 917 kg/m3. The density of salt water is 1029 kg/m3. A mass of ice is 2.55 x 1013 kg. Calculate the volume of salt water that has the same mass as 278 km3 of ice.

Calculate the volume of a 1.850 mol gas sample in a closed container that is at a temperature of 22.25oC and a pressure of 225.4 kPa

What is an isotope? Give an example of an element with isotopes.

Consider the reaction between liquid water and aqueous magnesium nitride to form solid magnesium oxide and ammonia gas. If magnesium nitride is present in excess, how many moles of water are needed to form 9.17*1023 ammonia molecules?

The properties of elements are arranged by ... A. mass numbers B. atomic masses C. atomic radii D. atomic numbers

When a tire is inflated with air is it a chemical or physical change?

Which isotope is used to date ancient artifacts such as fossils? carbon-12 carbon-14 uranium-238 oxygen-16