Question

Which chemical equation describes the balanced reaction between magnesium and hydrochloric acid to form magnesium chloride and hydrogen gas?


A.


Mg + 2H2SO4 → MgSO4+ 2H2


B.


Mg + 2HCl → MgCl2+ H2


C.


Mn + HCl → MnCl2+ H2


D.


Mg + H20 → MgO2+ H2

Answer 1

@Princy123

Answer 2

plz help

Answer 3

b

Answer 4

This reaction describes photosynthesis.



6CO2 + 6H2O → C6H12O6 + 6O2



Which compounds are the reactants and which are the products?



A.


reactants: C6H12O6 + 6O2



products: 6CO2 + 6H2O


B.


reactants: 6CO2 + 6H2O



products: C6H12O6 + 6O2


C.


reactants: 6CO2 + C6H12O6



products: 6H2O + 6O2


D.


reactants: 6H2O + 6O26CO2 + C6H12O6



products: 6CO2 + C6H12O6

Answer 5

b

Answer 6

Which is the properly balanced equation for the process in which iron oxide (Fe2O3) and carbon monoxide (CO) react to produce iron (Fe) and carbon dioxide (CO2) gas?



A.


Fe2O3 + CO → Fe + CO2


B.


Fe2O3 + 3CO → 2Fe + 3CO2


C.


2Fe2O3 + 3CO → 2Fe + 3CO2


D.


3Fe2O3 + CO → 3Fe + 2CO2

Answer 7

@Princy123 help again i am in hurry

Answer 8

b

Answer 9

r u guessing

Answer 10

no

Answer 11

cause the pat 3 have been b

Answer 12

ok

Answer 13

Which statement about a compound on this pH scale explains why it is the strongest acid?

Missing Metadata



A.
RbOH is a strong acid because it has the greatest pH.


B.
HCl is a strong acid because its pH is the lowest number on the pH scale.


C.


HIO3 is a strong acid because its pH is closest to 7.


D.
HBr is a strong acid because its pH is less than 7.

Answer 14

http://static.k12.com/calms_media/media/943500_944000/943744/1/51ffdb8518b0029b19ec9661f45e3b641a41ec34/MS2_PHY_03_18_Q.jpg

Answer 15

help plz

Answer 16

lol its b again

Answer 17

one last one plz

Answer 18

Which is the correct chemical formula for sulfur trioxide?


A.


S2O


B.


SO2


C.


SO3


D.


S3O

Answer 19

this time it is c

Answer 20

yay

Answer 21

ok i will have a few in a little i have to go do something

Answer 22

well it is much for today..
i gotta go now...
bye

Answer 23

hich mixture can be separated using filtration?



Choose all answers that are correct.



A.


pebbles and sand


B.


salt and water


C.


sand and water


D.


sugar and water

Answer 24

a

Answer 25

its where u can choose like all of them

Answer 26

right but i think the only answer is a.

Answer 27

actually b works too

Answer 28

o ok srry i was in a class so i didnt answer u asap u know

Answer 29

A student dissolves some solid NaNO3 in a beaker of water.



Which are the solute and the solvent?



Choose all answers that are correct.

Answer 30

A.


solvent: water


B.


solute: NaNO3


C.


solute: water


D.


solvent: NaNO3

Answer 31

c and d