Chemistry
Chemistry, 25.01.2021 09:50, sydneylocascio26

Need help urgently!! If samples of two different elements each represent one mole,

a
heir molar masses are equal.
b
they contain the same number of atoms.
c
they are equal in mass.
d
they have the same atomic mass.

answer
Answers: 2

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 23:00, sophiaa23
50 pts plz what is the physical state of matter of baking soda.
Answers: 1
image
Chemistry, 22.06.2019 08:00, katelyn0579
Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely. analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and β€œsynthetic” salicylic acid is 151-154oc?
Answers: 1
image
Chemistry, 22.06.2019 14:30, joejoefofana
Consider the reduction reactions and their equilibrium constants. cu+(aq)+eβˆ’β†½βˆ’βˆ’β‡€cu(s)pb2+(aq)+2eβˆ’β†½βˆ’βˆ’β‡€ pb(s)fe3+(aq)+3eβˆ’β†½βˆ’βˆ’β‡€fe(=6.2Γ—108=4. 0Γ—10βˆ’5=9.3Γ—10βˆ’3 cu + ( aq ) + e βˆ’ ↽ βˆ’ βˆ’ ⇀ cu ( s ) k =6.2Γ— 10 8 pb 2 + ( aq ) +2 e βˆ’ ↽ βˆ’ βˆ’ ⇀ pb ( s ) k =4.0Γ— 10 βˆ’ 5 fe 3 + ( aq ) +3 e βˆ’ ↽ βˆ’ βˆ’ ⇀ fe ( s ) k =9.3Γ— 10 βˆ’ 3 arrange these ions from strongest to weakest oxidizing agent.
Answers: 3
image
Chemistry, 22.06.2019 23:00, ceejay8005
The data below were determined for the reaction shown below. s2o82– + 3i – (aq) β†’ 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 Γ— 10 – 5 m/s 2 0.076 0.060 2.8 Γ— 10 – 5 m/s 3 0.076 0.030 1.4 Γ— 10 – 5 m/s the rate law for this reaction must be:
Answers: 1
Do you know the correct answer?
Need help urgently!! If samples of two different elements each represent one mole,

a

Questions in other subjects: