Chemistry, 20.12.2021 08:50, JJ143899

9. How many moles of Ca are in 7.6 x 10^22 atoms of calcium?

Answers: 3

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 10:40, trinityanne1738

Asolid that forms and separates from a liquid mixture is called

Answers: 2

continue

Chemistry, 22.06.2019 17:50, kaylamount

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

Answers: 2

continue

Chemistry, 22.06.2019 22:30, vhife4901

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.

Answers: 1

continue

Chemistry, 22.06.2019 22:40, lindseyklewis1p56uvi

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization. a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution. part bcalculate the percent ionization of ha in a 0.010 m solution