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Aniya Avila
ChemistryChemistry
How many grams of naoh would react with 507 g fecl2 in the reaction fecl2 + 2naoh fe (oh) 2 (s) + 2nacl?
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Bailee Ayers
ChemistryChemistry
Hydrocarbons having the same formula but variations in structure are called isomers.

a. True

b. False
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James
ChemistryChemistry
What are some human activities that could have influenced CO2 levels in this period?
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Quinton Mccarthy
ChemistryChemistry
Give two reasons why a 100% yield is not obtained in actual chemical manufacturing process.
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Paola Lucas
ChemistryChemistry
What's the symbol for nitrogen
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Maci Lamb
ChemistryChemistry
A student performs the reduction of 4-nitrobenzaldehyde (151.12 g/mol) with sodium borohydride (37.83 g/mol) in the presence of ethanol. The student mixes 4.13 g of 4-nitrobenzaldehyde with 0.700 g of sodium borohydride and obtains 1.85 g of 4-nitrobenzyl alcohol (153.14 g/mol). What is the percent yield of this reaction
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Boston Keller
ChemistryChemistry
Which of the following subatomic particles always has a positive charge?
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Helen Mathews
ChemistryChemistry
Which term is described as a long, narrow depression in the ocean floor?
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Kali
ChemistryChemistry
Which is the weakest Bronsted Base?

A) CF3CH2S

B) CH3CH2NH^-

C) CCl3CH2CH2O^-

D) CH3CH2^-
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Clara Rice
ChemistryChemistry
If element A has an ionic charge of + 2 and element B has an ionic charge of - 3, what will be the formula for the compound created by element A and element B?

A2B3

A3B2

AB2

impossible to determine without additional information
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Kirsten Cross
ChemistryChemistry
The equation below shows the reaction of zinc with hydrochloric acid (HCl).

Zn (s) + 2 HCl (aq) - > ZnCl2 (aq) + H2 (g)

What will happen if the concentration of HCl is decreased?

A. More ZnCl2 will be produced.

B. The reaction rate will slow down.

C. The hydrochloric acid will become more acidic.

D. The reaction will produce water instead of hydrogen gas.
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Benson
ChemistryChemistry
Which substance is most likely to heat up the fastest?
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Aylin Moran
ChemistryChemistry
According to Table I, which salt releases energy as it dissolves?

(1) KNO3 (3) NH4NO3

(2) LiBr (4) NaCl
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Imani Dougherty
ChemistryChemistry
Which subshell is likely to be filled after the rest of the subshells at a particular energy level?
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Trevor Dominguez
ChemistryChemistry
The constellations seem to move as the seasons on Earth change. What causes this?
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