Recent questions in Chemistry

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A chemical agent used to disinfect must be able to kill________

Heels asked Oct 12, 2024

by Heels

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If you know that a reaction is reversible, and know its change in entropy value, how can you determine its change in enthalpy?

JensS asked Oct 12, 2024

by JensS

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3 votes

217k views

What are the two principal differences between nuclear reactions and ordinary chemical changes? a) Nuclear reactions involve changes in the nucleus, release more energy; chemical changes involve electrons,

Manfcas asked Oct 12, 2024

by Manfcas

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5 votes

131k views

Mechanisms of side-chain oxidation by radicals: a. aliphatic b. residues

Ankit Srivastava asked Oct 12, 2024

by Ankit Srivastava

7.3k points

1 answer

0 votes

12.5k views

Gamma and tau have same ___ but diff___

Shridhar Gupta asked Oct 12, 2024

by Shridhar Gupta

8.1k points

1 answer

4 votes

7.8k views

Rutherford’s theory was identified by using a beam of particles and detecting the scattering of the particles after they hit gold foil. holding a magnet next to a beam of electrons and carefully analyzing

Skillit Zimberg asked Oct 12, 2024

by Skillit Zimberg

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1 answer

1 vote

185k views

1s², 2s², 2p⁶, 3s², 3p⁶ ,4s¹, 3d⁵ can chromium form an with th + 3 charge?

Bosniamaj asked Oct 12, 2024

by Bosniamaj

8.4k points

1 answer

1 vote

110k views

Molecular formula of certain ionic compound is A₂B3 and A is a metal. State the valency and group of A and B in the modern periodic table. hagin of chemical reaction

Mastazi asked Oct 12, 2024

by Mastazi

8.8k points

1 answer

1 vote

130k views

Predict what happens to the temperature in the cooler bag containing dry ice and ice cream. Explain your answer. Hint : Look at the transfer of thermal energy when dry ice sublimes.

Sparrowt asked Oct 12, 2024

by Sparrowt

8.3k points

1 answer

0 votes

132k views

If a sample of butane, C₄H₁₀, contains a total of 8.0 × 10³ atoms of carbon, how many molecules of butane are in the sample? A. 6.0 × 10³ B. 3.0 × 10³ C. 8.0 × 10³ D. 1.1 × 10⁴ E. 2.0 × 10³

Babatunde Mustapha asked Oct 12, 2024

by Babatunde Mustapha

8.0k points

1 answer

0 votes

147k views

Which element has the core electrons 1s22s22p6? He O Be Na

Albert James Teddy asked Oct 12, 2024

by Albert James Teddy

8.1k points

1 answer

5 votes

172k views

How many grams of KCl dissolve in 100 g H20 at 60 C?

Luca Ghersi asked Oct 12, 2024

by Luca Ghersi

6.9k points

1 answer

0 votes

151k views

Which substance undergoes oxidation in the chemical reaction Fe₂O₃ + 3CO → 2Fe + 3CO₂? A) Fe₂O₃ B) CO C) Fe D) CO₂

Absessive asked Oct 12, 2024

by Absessive

8.9k points

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2 votes

56.5k views

Refer to your properly drawn Lewis Dot structure. Then identify the type(s) of bond(s) present in the following molecule: CH₃OH a. Nonpolar Covalent Bonds b. lonic Bonds c. Polar Covalent Bonds

Chi Zhang asked Oct 12, 2024

by Chi Zhang

8.6k points

1 answer

0 votes

107k views

An element's unique chemical properties result from (the various combinations of protons, neutrons, and electrons) (the various types of protons, neutrons, and electrons making up the atoms of the element).

Firas Dib asked Oct 12, 2024

by Firas Dib

7.8k points

1 answer

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13.7k views

How many moles are present in 2.45 x 10^31 molecules of CO₂ ?

Rompetroll asked Oct 12, 2024

by Rompetroll

7.7k points

1 answer

5 votes

90.7k views

How many pumps are used for a Large Scratch Blend? A) 3 pumps B) 4 pumps C) 5 pumps D) 6 pumps

Jcromanu asked Oct 12, 2024

by Jcromanu

7.6k points

1 answer

2 votes

36.5k views

How did Anders Celsius create the temperature scale?

Bhamlin asked Oct 12, 2024

by Bhamlin

8.3k points

1 answer

2 votes

113k views

for a first order reaction A - B the dependence of rate constant Kon temperature is given Dyogok = 23 02-810 where T is in Kelvin 20% solution of A by mass decomposes to the extent of 25% in 20 minutes

Rashane asked Oct 12, 2024

by Rashane

7.7k points

1 answer

5 votes

72.9k views

What mass of NaOH is needed to precipitate the Cd2+ ions from 38.0mL of 0.520 M Cd(NO3)2 solution?

Betohaku asked Oct 12, 2024

by Betohaku

8.1k points

1 answer

3 votes

174k views

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