1.)CaCO3→CO2+CaO
A scientist heats 30 grams of calcium carbonate (CaCO3) in the chemical reaction shown. What is the total mass of the products?(1 point)
A.)10 grams
B.)15 grams
C.)60 grams <<<<
D.)30 grams
2.)Fe+O2→Fe2O3
What happens to atoms of Fe and O2 during the reaction?(1 point)
A.)They are lost.
B.)They are rearranged.<<<<
C.)They maintain their properties.
D.)They gain mass.
3.)What is most likely to occur during a chemical reaction?(1 point)
A.)New atoms are created.
B.)Mass is conserved.<<<<
C.)The original substance maintains its properties.
D.)Molecules of the original substance are lost.
{4.}NaHCO3+HC2H3O2→NaC2H3O2+H2O+CO2
A student mixes baking soda (NaHCO3) and acetic acid (HC2H3O2) to produce a chemical reaction shown. Which statement about the reaction is correct?(1 point)
A.)Atoms of Na are destroyed during the reaction.
B.)Some atoms gain mass after the reaction.
C.)There are more H atoms after the reaction.
D.)The atoms of the reactants are regrouped during the reaction.<<<<
{5.}2H2+O2→2H2O
There are four atoms of hydrogen (H) before the reaction. How many atoms of hydrogen are present after the reaction?
(1 point)
A.)8
B.)2
C.)5
D.)4<<<<
The answers to the Chemical Reactions quiz are:
1. 30 grams
2. They are rearranged
3. Mass is conserved
4. The Atoms of the reactants are regrouped during the reaction
5. 4
Hope I could help:)
Karen chill,all we are doing is
1.checking
or
2.borrowing answers
KAREN!!!
1. 30 grams
2. They are rearranged
3. Mass is conserved
4. The Atoms of the reactants are regrouped during the reaction
5. 4
If you every need me always say #Lost also spread love not hate!
LoL karen does needs to chill
trust me is correct make sure to read the answer they might be wrong
Trust me is right
that girl and i don't cheat, if you don't cheat then why are you here and how do you know about this website. Also we are here because our answer need checked or we need to borrow one if we got some wrong so before accusing us of cheating make sure you have all the facts. Your welcome ;)
@Trustme is right
Thank you