subject
Chemistry, 10.12.2020 20:30 xojade

Look at the following chemical equation. 2H202 2H20 + O2
Does this equation follow the conservation of mass?
A.
Yes, because the mass of the reactants is greater than the mass of the products.
В.
No, because the mass of the reactants is greater than the mass of the products.
C С
No, because the coefficient of the reactant is less than the coefficient sum of the products.
D
Yes, because each atom that is in the reactants is found in the products.

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 01:00
What is the equilibrium constant of aa+bb=cc+dd
Answers: 1
question
Chemistry, 22.06.2019 06:00
An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.
Answers: 2
question
Chemistry, 22.06.2019 08:00
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 “synthetic” salicylic acid is 151-154oc?
Answers: 1
question
Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
You know the right answer?
Look at the following chemical equation. 2H202 2H20 + O2
Does this equation follow the conser...
Questions
question
Mathematics, 28.01.2020 00:31
question
Mathematics, 28.01.2020 00:31
Questions on the website: 13722360