stoichiometry
How many grams of carbon are in 2.5 moles?
30g
which one is Decomposition?
A + B → AB or AB → A + B?
AB → A + B
What is the electron configuration of Phosphorus?
1s2 2s2 2p6 3s2 3p6 4s2 3d5
Find the step that is not include in Scientific Method 1.Analyze data 2.Construct research 3.Draw conclusion 4.Test the hypothesis
Answer is Construct research
Moles provide a bridge from the molecular scale to the real-world scale
what is acetic acid (HC2H3O2)+copper --->?
2 Cu+2HC2H3O2--->2CuC2H3O2+H2
what element is [Ar] 4s1?
Potassium
What do you explain for Draw conclusion?
Draw Conclusions form an opinion
What reaction is combustion reaction?
Reactions that have oxygen as a reactant
nonane(C9H20)+oxygen gas--->
CaH20+O2=CO2+H2O
Atomic number of element symbol K
19
What questions can you ask for scientific method?
Something that is the way it is
What are stoichiometry formula?
Formulas that are balanced chemical equation identifies the maximum amount of product that can be obtained.
HNO3 + Ba(OH)2 is synthesis
True or False
False because it's double replacement
Write a noble gas electron configuration of Barium
[Xe] 6s2
Where can we use Scientific Method in our lives?
It can be use cooking and budgeting.
Which one is a double replacement
Pb(NO3 )2 (aq) + K2CrO4 (aq) → PbCrO4 (s) + 2KNO3 (aq)
Al + CuCl2 🡪 Cu + AlCl3
Pb(NO3 )2 (aq) + K2CrO4 (aq) → PbCrO4 (s) + 2KNO3 (aq)
Find electron configuration of Zirconium?
a.1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6
6s2 4f14 5d10 6p4
b.1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p2
c.)1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
b. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p2
Why is Scientific Method important so important?
It's important to best-known way to discover how and why the thingsworks