Chemistry, 18.03.2021 04:40 genyjoannerubiera
1. How many grams are there in 4.50 moles of Na2SO4
2. What is the volume of 13.20 grams of N2 at STP
3. What is the mass, in grams of 100.0 liters of O2 at STP
4. What is the mass in grams H2 in 7.52*10^24 molecules of H2
5. How many molecules are in 1.39 liters of CH4 at STP
Answers: 2
Chemistry, 21.06.2019 23:00
The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .
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Chemistry, 22.06.2019 00:00
Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what
Answers: 3
Chemistry, 22.06.2019 09:00
If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?
Answers: 1
Chemistry, 22.06.2019 10:00
Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer
Answers: 1
1. How many grams are there in 4.50 moles of Na2SO4
2. What is the volume of 13.20 grams of N2 at S...
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