Recent questions in Chemistry

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Give appropriate description for this enzyme immunoassay (EIA). Noncompetitive EIA

Futureal asked Dec 27, 2024

by Futureal

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What is the valence shell? 1) The outermost shell of an atom 2) The innermost shell of an atom 3) The middle shell of an atom 4) The shell with the highest energy level

Tejaswini Teju asked Dec 27, 2024

by Tejaswini Teju

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1 answer

2 votes

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The law of constant composition applies to ______. A. solutions B. compounds C. solids D. heterogeneous mixtures E. homogeneous mixtures

Elimination asked Dec 27, 2024

by Elimination

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3 votes

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Determine which base will work to deprotonate each compound in an acid/base extraction? 1) Sodium hydroxide (NaOH) 2) Potassium hydroxide (KOH) 3) Ammonium hydroxide (NH₄⁺OH) 4) Calcium hydroxide (Ca(OH

Brett Caswell asked Dec 27, 2024

by Brett Caswell

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1 answer

3 votes

147k views

An example of a reduced organic compound that may be produced during fermentation is: A. Lactic acid B. Ethanol C. Acetic acid D. Pyruvate

Trumank asked Dec 27, 2024

by Trumank

8.3k points

1 answer

3 votes

192k views

Please think about a reaction that is important to a system that you may have explored in a different class. These can be systems inside a cell, the ocean, the air, an engine, etc. Be creative and curious.

Nick Coons asked Dec 27, 2024

by Nick Coons

7.6k points

1 answer

3 votes

29.8k views

Can any two atomic orbitals combine to form two molecular orbitals True or false?

Oybek asked Dec 27, 2024

by Oybek

7.4k points

1 answer

1 vote

220k views

Propane (C₃H₈), the fuel commonly used in gas grills, is one of the lighter compounds obtained from petroleum. Calculate the percent composition of propane.

Sunn asked Dec 27, 2024

by Sunn

8.9k points

1 answer

2 votes

216k views

If Earth rotated from north to south, the North Star would appear to

Dvhamme asked Dec 27, 2024

by Dvhamme

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1 answer

3 votes

171k views

What is happening at the molecular level to explain your observations? In other words, what's a scientific model that's representative of your data? The lab experiment instructs you to react 0.21 g of

Marcus K asked Dec 27, 2024

by Marcus K

7.6k points

1 answer

0 votes

85.7k views

Cation and anion if FeF2

Alireza Ghanbarinia asked Dec 27, 2024

by Alireza Ghanbarinia

7.8k points

1 answer

2 votes

195k views

Write your answers on the lines below. 5. An object that floats will displace its_____ in water, while an object that sinks will displace it's_____ in the water. 6. Why are metals good conductors?__________

Chris Zeh asked Dec 27, 2024

by Chris Zeh

8.2k points

1 answer

3 votes

92.0k views

What occurs at the lower critical change line with a dropping temp in an alloy of 3% carbon in iron that is significant in forming cast iron?

Samer asked Dec 27, 2024

by Samer

7.6k points

1 answer

4 votes

21.5k views

What does photoelectron spectroscopy show with molecular orbitals?

Twk asked Dec 27, 2024

by Twk

7.7k points

1 answer

3 votes

101k views

how the Sun is responsible for most of the energy on Earth by explaining it's connection to photosynthesis and fossil fuels.

Tushar H asked Dec 27, 2024

by Tushar H

9.1k points

1 answer

5 votes

78.2k views

What are 18-year-olds more likely than 15-year-olds to mention when describing romantic relationships? A) Physical attraction B) Emotional intimacy C) Parental approval D) Financial stability

Naama Katiee asked Dec 27, 2024

by Naama Katiee

8.6k points

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3 votes

114k views

Identify the net ionic equation for the following reaction: 2NaCl(aq) + Hg₂(NO₃)2(aq) + 2NaNO₃(aq) + Hg₂Cl₂(S) A) 2Hg⁺(aq) + 2Cl⁻(aq) → 2HgCl(s) B) Hg₂²⁺(aq) + 2Cl⁻(aq) → Hg₂Cl₂(s) C) Hg₂²⁺(aq) → Hg₂(s)

Janusz Lenar asked Dec 27, 2024

by Janusz Lenar

7.9k points

1 answer

1 vote

74.6k views

In digestion system ,evidence of a chemical change can be observed when

Mismas asked Dec 27, 2024

by Mismas

8.2k points

1 answer

0 votes

65.4k views

Calculate the concentration of Tl+ when TlCl just begins to precipitate from a solution that is 0.0250M in Cl−. a) 1.25×10−2M b) 2.50×10−2M c) 5.00×10−3M d) 1.00×10−3M

Peter Szekeli asked Dec 27, 2024

by Peter Szekeli

7.9k points

1 answer

2 votes

203k views

For each of the following gemstones, determine the mass of compound present in the given moles of each compound. The chemical formula for garnet is MgAl₂(SiO₄)₃. What is the mass in grams of garnet that

Vicente Reig asked Dec 27, 2024

by Vicente Reig

8.3k points

1 answer

3 votes

213k views

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