Chemistry, 29.01.2020 05:01 moneybaggzay123
Asample of iron has a volume of 10.0 ml. the density of iron is 7.87 g/ml. which is the correct expression to calculate the mass of the sample using dimensional analysis?
10.0 ml ã (7.87 ml/1 g)10.0 ml ã (1 ml/7.87 g)10.0 ml ã (1 g/7.87 ml)10.0 ml ã (7.87 g/1 ml)
Answers: 1
Chemistry, 21.06.2019 23:10, ChloeLiz7111
Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.
Answers: 1
Chemistry, 22.06.2019 06:00, kylieweeks052704
Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.
Answers: 2
Chemistry, 22.06.2019 17:00, calmicaela12s
Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.
Answers: 1
Asample of iron has a volume of 10.0 ml. the density of iron is 7.87 g/ml. which is the correct expr...
History, 18.07.2019 03:30
Computers and Technology, 18.07.2019 03:30
Social Studies, 18.07.2019 03:30
Computers and Technology, 18.07.2019 03:30