Recent questions in Chemistry

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How does the use of too little heat affect fractional distillation?

Ben E G asked Oct 11, 2024

by Ben E G

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Provide an equation to show the formation of an amide using butanoic acid and cyclopentamine. a. Butanoic acid + Cyclopentamine â†’ Amide + Water b. Butanoic acid + Cyclopentamine â†’ Ester + Amine c.

EyeQ Tech asked Oct 11, 2024

by EyeQ Tech

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1 answer

5 votes

98.0k views

What two units are concentration expressions that take dissociation of solute into account?

Pakore asked Oct 11, 2024

by Pakore

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4 votes

39.2k views

Which of the following items is an oxidizing agent used with demi-permanent and permanent colors, lighteners, and toners? A) Shampoo B) Developer C) Hairspray D) Leave-in conditioner

Elvedin Hamzagic asked Oct 11, 2024

by Elvedin Hamzagic

7.7k points

1 answer

1 vote

160k views

A 27.8 g sample of nitrogen, N₂, has a volume of 50.0 L and a pressure of 680. mmHg What is the temperature of the gas in kelvins?

Wolfram Rittmeyer asked Oct 11, 2024

by Wolfram Rittmeyer

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1 answer

0 votes

198k views

Atoms of witch two elements have a combined total of 59 portons

Teneisha asked Oct 11, 2024

by Teneisha

8.3k points

1 answer

1 vote

7.0k views

The unstable isotope nickel-59 can be used to date rocks that contain it. Nickel-59 decays into the more stable cobalt-59. The nickel isotope has a half-life of 76,000 years. Which statement about nickel-59

Shobbi asked Oct 11, 2024

by Shobbi

7.4k points

2 answers

1 vote

86.7k views

Most metals are found to occur naturally in their uncombed states 1. True 2. False

BraveSirFoobar asked Oct 11, 2024

by BraveSirFoobar

8.1k points

1 answer

1 vote

202k views

Write the atomic symbol for the isotope with the following: a mercury atom with 122 neutrons

Dolma asked Oct 11, 2024

by Dolma

8.5k points

1 answer

1 vote

64.9k views

What effect did the soap have on the penny in the penny drop experiment? A) Increased cohesion between water molecules. B) Decreased the capillary action between water molecules and the penny. C) Increased

Dipak D Desai asked Oct 11, 2024

by Dipak D Desai

8.6k points

1 answer

5 votes

164k views

What mass of potassium nitrate is needed to generate 239.0 l of gas, composed of 111.0 l of N₂ and 128.0 l of O₂ at 0.720 atm and 287 k, using these two reactions?

Bosco asked Oct 11, 2024

by Bosco

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2 votes

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What is standard cell potential for the reaction 3Ni(s) + 2AI3+ (1M) → 3NI2+ (1M) + 2AI(s)

Casey Kinsey asked Oct 11, 2024

by Casey Kinsey

8.6k points

1 answer

1 vote

94.7k views

How many grams of naoh are needed to give a ph of 11.5 in a 14.5 l tank of water?

Kevin Nelson asked Oct 11, 2024

by Kevin Nelson

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2 answers

2 votes

152k views

Why is calcumun hydroxide

Tfischbach asked Oct 11, 2024

by Tfischbach

8.0k points

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42.7k views

The biological macromolecule that is least soluble in water is a(n): a) Carbohydrate b) Protein c) Lipid d) Nucleic acid

Rgchris asked Oct 11, 2024

by Rgchris

7.8k points

1 answer

2 votes

63.3k views

What is the connection between Hess' law and the fact that H is a state function?

Mohammed Mustafa asked Oct 11, 2024

by Mohammed Mustafa

8.2k points

1 answer

3 votes

472 views

examine the molecule sf4 in the real molecules screen to check your prediction from question c. which interactions (bond-bond repulsion, lone-pair bond repulsion, lone pairlone pair repulsion) are more

Low Yi Xiang asked Oct 11, 2024

by Low Yi Xiang

8.0k points

1 answer

0 votes

163k views

The most important factor in stain removal is: Select the single best answer: A. Soap and water B. Remove before it dries C. Water and ammonia D. Back and forth motion

Mateusz Nowak asked Oct 11, 2024

by Mateusz Nowak

8.0k points

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188k views

Nicknamed quicksilver, which of the following metallic elements is the only one that remains in a liquid state at room temperature? It is employed in thermometers due to its regular expansion upon heating

Medmunds asked Oct 11, 2024

by Medmunds

8.4k points

1 answer

3 votes

28.6k views

A solution containing equal numbers of hydrogen ions and hydroxide ions is a. in equilibrium b. acidic c. basic d. neutral e. alkaline

RufusVS asked Oct 11, 2024

by RufusVS

8.7k points

1 answer

0 votes

56.9k views

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