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Define an alkali and an acid

Monica Acha asked Dec 24, 2024

by Monica Acha

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What are the five dominant chemical species in the troposphere?

Nabil Djarallah asked Dec 24, 2024

by Nabil Djarallah

7.9k points

1 answer

2 votes

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This act requires chemical companies to research the effects of new chemicals and notify the EPA before they are manufactured: a) Clean Air Act b) Toxic Substances Control Act (TSCA) c) Emergency Planning

TheVillageIdiot asked Dec 24, 2024

by TheVillageIdiot

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1 vote

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Identify the valence and core electrons.

Sandro Rey asked Dec 24, 2024

by Sandro Rey

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Which of the following elements have the same number of valence electrons? Ne Li F Ar

Leland Hepworth asked Dec 24, 2024

by Leland Hepworth

8.0k points

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1 vote

177k views

If the observed [product]/[reactants] is greater than Keq then: 1) The reaction is at equiLiBrium 2) The reaction is not at equiLiBrium 3) The reaction is spontaneous 4) The reaction is non-spontaneous

Joe Ijam asked Dec 24, 2024

by Joe Ijam

8.9k points

1 answer

3 votes

61.5k views

if 12.5 g of iron(iii) oxide (rust) is produced from 8.74 g of iron, how many grams of oxygen are needed for this reaction?

Wouter Van Nifterick asked Dec 24, 2024

by Wouter Van Nifterick

7.5k points

1 answer

0 votes

71.3k views

Hydrazine reacted with oxygen how many kilograms of NO2 are produced from the reaction of 75.0 kg of the limiting reagent a) 61.0 kg b) 75.0 kg c) 107.4 kg d) 150.0 kg

Pyriku asked Dec 24, 2024

by Pyriku

8.1k points

1 answer

1 vote

163k views

7.23 moles of CH4 is equal to _____grams of CH4.

Andreas Bilger asked Dec 24, 2024

by Andreas Bilger

7.7k points

1 answer

1 vote

93.2k views

Activation energy (Eₐ) and rate constant (k₁) and (k₂) of a chemical reaction at two different temperatures (T₁) and (T₂) are related by - A. ln k₂/k₁=Eₐ/R(1/T₁−1/T₂) B. ln k₂/k₁=-Eₐ/R(1/T₁−1/T₂) C. ln

Rgfvfk Iff asked Dec 24, 2024

by Rgfvfk Iff

7.7k points

1 answer

3 votes

194k views

How many kilograms of liquid bromine would fit in a 0.345-gallon container? The density of bromine is 3.119g/mL. a. 4.67 kg b. 5.87 kg c. 6.12 kg d. 7.21 kg

Goto asked Dec 24, 2024

by Goto

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0 votes

118k views

A solution of 4 g of organic compound X in 300 mL of water was extracted with 300 mL of ethyl acetate. At equilibrium the concentration of X in the two phases was: 4.6 g / 100 mL of ethyl acetate; 0.8

Babygau asked Dec 24, 2024

by Babygau

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210k views

calculate a value for the equilibrium constant for the reaction below. (hint: when reactions are added together, the equilibrium expressions are multiplied.)

Joris asked Dec 24, 2024

by Joris

8.3k points

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2 votes

121k views

Which of these pairs of atoms are isotopes? 1. Atom A: 13 protons, 12 neutrons and 12 electrons. Atom B: 12 protons, 12 neutrons and 12 electrons 2. Atom A: 12 protons, 12 neutrons and 12 electrons. Atom

Darbid asked Dec 24, 2024

by Darbid

7.9k points

1 answer

1 vote

28.7k views

Which of the following isnot an example of a physical property The boiling point of liquid nitrogen is 77 K. Nitrogen is a gas at room temperature. Nitrogen is colorless. Nitrogen gas is less dense than

Sanjivr asked Dec 24, 2024

by Sanjivr

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1 answer

1 vote

159k views

What is the best explanation of why iron requires a Roman numeral when naming an ion of iron, but zinc does not? A) Zinc is monovalent B) Iron is divalent C) Iron forms multiple ions D) Zinc is a transition

Djasper asked Dec 24, 2024

by Djasper

8.5k points

1 answer

2 votes

217k views

Which one of the following is not an organic compound? Why? a) CH₄ b) C₂H₆O c) CaO d) C₆H₁₂O₆

Kul asked Dec 24, 2024

by Kul

7.8k points

1 answer

0 votes

669 views

After adjusting the density of the liquid to 1.00 g/mL, does the liquid now match the density of water? a) Yes, the density of the liquid matches that of water. b) No, the density of the liquid remains

Christianah asked Dec 24, 2024

by Christianah

8.7k points

1 answer

0 votes

107k views

How many atoms of each element are contained in a single formula unit of cerium(IV) sulfate, Ce(SO4)2·4 H2O? What percentage by mass of the compound is water?

David Lozzi asked Dec 24, 2024

by David Lozzi

8.7k points

1 answer

5 votes

233k views

What changes must a SOLID undergo to become a LIQUID

Jamie Howarth asked Dec 24, 2024

by Jamie Howarth

8.1k points

1 answer

2 votes

105k views

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