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What is the pkb value (without looking it up) for the ethoxide ion?

Akmad asked Oct 1, 2024

by Akmad

8.4k points

1 answer

4 votes

72.5k views

Calculate the mass percent of 0.485 g of hydrogen, which reacts with oxygen to form 2.32 g of H2O. a) 4.6% b) 9.4% c) 13.5% d) 17.2%

Antoine Gamond asked Oct 1, 2024

by Antoine Gamond

8.1k points

1 answer

2 votes

132k views

What is the enthalpy change when 41.8 mL of 0.530 M sulfuric acid reacts with 21.5 mL of 0.175 M potassium hydroxide? a) ΔH = -111.6 kJ/mol b) ΔH = (-111.6 kJ/mol) * Number of moles reacted c) Insufficient

Irene Ling asked Oct 1, 2024

by Irene Ling

8.2k points

1 answer

3 votes

85.6k views

Draw the lewis dot structure for thiophene: C4H4S

Jonhtra asked Oct 1, 2024

by Jonhtra

8.3k points

1 answer

1 vote

157k views

Trees that had made way for Gatsby’s house. A) Were chopped down B) Were replanted C) Were preserved D) Were pruned

Vegas asked Oct 1, 2024

by Vegas

7.9k points

1 answer

2 votes

170k views

What is the molarity of a solution with 15.0 grams of NaOH dissolved in 200.0 mL of water?

Stephen Fuhry asked Oct 1, 2024

by Stephen Fuhry

8.3k points

1 answer

0 votes

214k views

Each of the following is a step in the degradation of fatty acids except A) hydration. B) activation. C) thiolysis. D) acylation. E) oxidation.

Jrmgx asked Oct 1, 2024

by Jrmgx

8.4k points

1 answer

1 vote

149k views

Write the ground state electron configuration for each atom or ion: a. Ni, Ni²⁺ b. Mn, Mn⁴⁺ c. Y, Y⁺ d. Ta, Ta²⁺

Abigale asked Oct 1, 2024

by Abigale

8.6k points

1 answer

4 votes

189k views

A certain drug is made from only two ingredients compound a and compound b. There are only 7 mL of Compound a used for every 4 mL of Compound B if a chemist wants to make 748 mL of the drug how many

Danjuggler asked Oct 1, 2024

by Danjuggler

7.9k points

1 answer

3 votes

166k views

Which of the following compounds consists of molecules? (there can be more than one answer) a. LiOH b. Ba(NO₃)₂ c. HNO₃ d. CH₃(CH₂)₃OH

Alexei Zababurin asked Oct 1, 2024

by Alexei Zababurin

7.7k points

1 answer

5 votes

24.5k views

What is causing the increasing amount of CO2 in the atmosphere? What could be done about it?

DaClown asked Oct 1, 2024

by DaClown

7.8k points

2 answers

0 votes

20.8k views

If 4.04 g of nitrogen combine with 11.46 g of oxygen to produce a compound with a molar mass of 108.0 g. What is the molecular formula of this compound?

Bbrumm asked Oct 1, 2024

by Bbrumm

8.6k points

1 answer

5 votes

17.1k views

3. 0.325 L of a 6.0 M solution of calcium hydroxide has how many moles of calcium hydroxide?

Carlos Cuesta asked Oct 1, 2024

by Carlos Cuesta

8.8k points

1 answer

0 votes

208k views

What depolarizes the adjacent area due to an influx of sodium ions from the current action potential? 1) Voltage-gated potassium channels 2) Voltage-gated calcium channels 3) Voltage-gated sodium channels

Arturkin asked Oct 1, 2024

by Arturkin

8.7k points

1 answer

5 votes

80.1k views

What are the factors that affect sn2 rate? in what way(s) do these factors affect the reaction rate?

JanithaR asked Oct 1, 2024

by JanithaR

8.6k points

1 answer

1 vote

227k views

How many grams of O are in a 100.0 g sample of the unknown? Your answer should have the appropriate number of significant figures. Only give the numeric value of your answer. Don't include the units.

Naddy asked Oct 1, 2024

by Naddy

7.2k points

1 answer

2 votes

45.7k views

Which of the following statements about constitutional isomers is not true? A) Constitutional isomers have the same molecular formula. B) Constitutional isomers have the same connectivity of atoms. C)

Daniel Laurindo asked Oct 1, 2024

by Daniel Laurindo

8.0k points

1 answer

5 votes

83.2k views

The ________ _______ exert the strongest controls on the properties of an atom. A. Electrons in the outer shell B. Neutrons in the nucleus C. Protons in the nucleus D. Isotopes in the environment

Uhlen asked Oct 1, 2024

by Uhlen

8.5k points

1 answer

1 vote

155k views

The Ksp for Mn(OH)2 is 2.0 x 10⁻¹³. What is the pH of the solution that is saturated with Mn(OH)2?

Sachchidanand asked Oct 1, 2024

by Sachchidanand

8.4k points

1 answer

0 votes

5.0k views

How many moles of Cl⁻ are in 560 ml of 0.24 M FeCl₃?

Nlern asked Oct 1, 2024

by Nlern

8.7k points

1 answer

0 votes

234k views

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