Recent questions in Chemistry

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In the given scenario involving the decomposition of CaCO3, identify the correct statement about the energy required or released. Choose the appropriate option: A) 890 kJ of energy would be released B)

Bart Simpson asked Oct 9, 2024

by Bart Simpson

7.7k points

1 answer

5 votes

78.7k views

How many atoms are in 1.75 moles of CHCl3?

Terrorbox asked Oct 9, 2024

by Terrorbox

8.3k points

1 answer

0 votes

72.2k views

Describe the visual appearance of the DNA you isolated as it precipitated in the ethanol and then after you started dissolving it in TE. How would you describe the appearance of DNA during precipitation

Joey Yi Zhao asked Oct 9, 2024

by Joey Yi Zhao

8.8k points

1 answer

5 votes

160k views

What is the name of HNO₂? -hydronitrous acid -nitrous acid -nitric acid -hydronitric acid -none of the above

Daisy asked Oct 9, 2024

by Daisy

7.9k points

1 answer

4 votes

101k views

Can two objects have the same mass and volume but be made of a different substance?explain.

FunkSoulBrother asked Oct 9, 2024

by FunkSoulBrother

7.8k points

1 answer

0 votes

139k views

What coefficients will balance the following equation: AlBr₃ + K₂SO₄ → KBr + Al₂(SO₄)₃? a) 2, 3, 2, 1 b) 1, 3, 2, 2 c) 2, 1, 2, 3 d) 2, 3, 1, 2

Chx asked Oct 9, 2024

by Chx

7.8k points

1 answer

0 votes

78.6k views

Each deuterium atom is formed from 1 proton, 1 neutron, and 1 electron. How much energy is released by the formation of 1 mole of deuterium (D)? Useful Info: • E = mc² Mass defect: 0.00238 amu • 1 amu

Thesquaregroot asked Oct 9, 2024

by Thesquaregroot

8.2k points

1 answer

3 votes

134k views

given the choice of making a buffer with 1.00 moles each of the conjugate acid base pair or 2.00 moles each of the conjugate acid base pair, what is the advantage of using the greater amounts of material?

DeanSinaean asked Oct 9, 2024

by DeanSinaean

7.9k points

1 answer

4 votes

108k views

What subatomic particles are located in the nucleus of an atom? a) Neutrons and axons b) Quarks and electrons c) Protons and neutrons d) Electrons and protons

Simon Brandhof asked Oct 9, 2024

by Simon Brandhof

7.8k points

1 answer

2 votes

212k views

Indicate whether the following statements are true or false. 1)CO₂ and O₂ are water-soluble 2)molecules that diffuse freely across cell membranes.

Jahmani asked Oct 9, 2024

by Jahmani

7.2k points

1 answer

5 votes

10.6k views

A hydrocarbon compound is burnt completely in air to form 17.6 g of carbon dioxide gas and 7.2 g of water. What is the molecular formula of the hydrocarbon compound? [Given that the relative atomic mass

Carlos Vega asked Oct 9, 2024

by Carlos Vega

9.4k points

1 answer

1 vote

23.7k views

Identify the class of compound produced when a haloalkane undergoes substitution with ammonia (NH3).

Joshua Cauble asked Oct 9, 2024

by Joshua Cauble

7.9k points

1 answer

1 vote

20.5k views

What is required in order for CFCs to break down ozone?

Davyd Geyl asked Oct 9, 2024

by Davyd Geyl

8.0k points

1 answer

5 votes

150k views

Choose all of the nucleophilic centers in the following compound: A) Oxygen B) Hydrogen C) Fluorine D) Carbon

ArtBIT asked Oct 9, 2024

by ArtBIT

8.2k points

1 answer

5 votes

105k views

describe the crystal structure of chromium, which crystallizes with two equivalent metal atoms in a cubic unit cell.

Robins Gupta asked Oct 9, 2024

by Robins Gupta

8.1k points

1 answer

5 votes

233k views

"Based on what you know about the general pattern of electronegativity for the elements on the periodic table, do covalent bonds form between elements with big or smaller differences in electronegativity?

Deniz Beker asked Oct 9, 2024

by Deniz Beker

8.5k points

1 answer

3 votes

83.0k views

Why does fresh zinc oxide cause chills but old oxide does not?

Ravi Yadav asked Oct 9, 2024

by Ravi Yadav

7.8k points

1 answer

0 votes

146k views

For the reaction: 3 O₂ (g) 2O, (g) K=1.8 x 10ˣ. If the equilibrium concentration [O₂] = 0.062 mol/L, calculate the equilibrium O₂ concentration.

Akintunde asked Oct 9, 2024

by Akintunde

9.1k points

1 answer

1 vote

7.9k views

Each of the given names are incorrect. Determine the correct systematic name for each molecule. Spelling and punctuation count 4-methylpentane: 2-ethylbutane: 2-dimethylpropane: 2,3-dichloropropane: 1,

Youbloodywombat asked Oct 9, 2024

by Youbloodywombat

8.2k points

1 answer

0 votes

214k views

For disinfection purposes, salons generally no longer use: 1) Bleach 2) Alcohol 3) Hydrogen peroxide 4) Disinfectant wipes

VirtualValentin asked Oct 9, 2024

by VirtualValentin

8.6k points

1 answer

2 votes

115k views

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