Chemistry, 01.12.2019 09:31 lordcaos066
Sunita carries out an experiment to investigate diffusion. she uses water and a food dye to find out how the volume of water used affects the time the dye takes to spread evenly through the water. her prediction is that the more water she uses, the longer the time needed for the dye to spread through it. which variable will she change?
Answers: 2
Chemistry, 22.06.2019 10:30
Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88
Answers: 1
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 19:50
What is the wavelength of a wave with a velocity of 50 m/s and a frequency of 5hz a 250 m b 0.1 m c 10m d 0.01 m
Answers: 2
Chemistry, 22.06.2019 22:00
The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?
Answers: 2
Sunita carries out an experiment to investigate diffusion. she uses water and a food dye to find out...
Mathematics, 01.07.2020 15:01
Mathematics, 01.07.2020 15:01
English, 01.07.2020 15:01
Mathematics, 01.07.2020 15:01
Business, 01.07.2020 15:01
Mathematics, 01.07.2020 15:01
Health, 01.07.2020 15:01
Mathematics, 01.07.2020 15:01
English, 01.07.2020 15:01
Mathematics, 01.07.2020 15:01