Which physical property is used to identify a mineral based on it's resistance to being scratched?

The reaction between ethyl bromide (C2H5Br) and hydroxide ion in ethyl alcohol is shown below at 330 K. C2H5Br (alc) + OH - (alc) → C2H5OH (l) + Br - (alc) The reaction is first order each in ethyl bromide and hydroxide ion. When [C2H5Br] is 0.

Define the term relative atomic mass

Calculate the enthalpy of combustion of 1 mol decane, C10H22, (l), to form CO2 and H2O. ∆Hf0 for decane is - 300.9 kJ/mol using the balanced chemical equation and Appendix Table B-14.

An oxidation-reduction reaction involves the (1) sharing of electrons (2) sharing of protons (3) transfer of electrons (4) transfer of protons

How many rundlets are there in 218 in3? Some conversion factors that may be useful are given below: 1.00 barrel = 42.0 gal 1.00 gal = 231 in3 1.00 gal = 3.78 L 1.00 rundlet = 6.81 * 104 mL 1.00 L = 1000.0 mL 1.00 barrel = 4.00 firkins

How much heat (energy) would need to be absorbed by 1.5 g of liquid water to cause a temperature change of 30.45 °C? The specific heat of water is 4.18 J/gºC.

What happens when electrons are passed from one atom to a more electronegative atom?

Calculate the k sp for zinc hydroxide if the solubility of zn (oh) 2 in pure water is 2.1 * 10-4 g/l. calculate the k sp for zinc hydroxide if the solubility of zn (oh) 2 in pure water is 2.1 * 10-4 g/l. 2.9 * 10-3 1.5 * 10-3 9.9 * 10-18 3.8 * 10-17

What is the importance of the coefficients in a balanced chemical reaction?

The process that changes the identity and number of protons in a nucleus is