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Radioactive decay is: A) temperature-independent B) a second-order process C) a zero-order process D) a process with a large activation energy

Ahmad Sharif asked Oct 6, 2024

by Ahmad Sharif

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Which one of the following salts in insoluble in water? a. CrCl₃ b. AgF c. PbSO₄ d. Mn(NO₃)₂ e. Cu(ClO4)₂

Yoonsun asked Oct 6, 2024

by Yoonsun

9.0k points

1 answer

3 votes

54.1k views

The activation energy for the reaction NO₂(g)+CO(g)⟶NO(g)+CO₂(g) is 125kJ/mol, and ΔE for the reaction is −216kJ/mol. What is the activation energy for the reverse reaction [NO(g)+CO₂(g)⟶NO₂(g)+CO(g)]?

AVEbrahimi asked Oct 6, 2024

by AVEbrahimi

9.2k points

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0 votes

218k views

What is the amount of a radioactive substance left at the end of year 4 if it initially started with 150,000 grams and decays at a rate of 1% per month? A) 94,902.44 grams B) 96,041.23 grams C) 98,052.

Poiz asked Oct 6, 2024

by Poiz

7.9k points

1 answer

5 votes

198k views

In a reaction, 20.50g of NaOH is reacted with excess Cu(NO3)2. 2 NaOH(aq) + Cu(NO3)2(aq) → Cu(OH)2(s) + 2NaNO3(aq) a. What is the theoretical yield of Cu(OH)2? b. If the actual yield of copper(II) hydroxide

Inspired asked Oct 6, 2024

by Inspired

7.4k points

1 answer

5 votes

68.4k views

What is a mass number? How is this different from the average atomic mass on the periodic table?

StefanH asked Oct 6, 2024

by StefanH

8.1k points

1 answer

2 votes

235k views

Yield and Selectivity in a Dehydrogenation Reactor The reactions C₂H₆ → C₂H₄ + H₂ C₂H₆ + H₂ → 2CH₄ take place in a continuous reactor at steady state. The feed contains 85.0 mole% ethane (C2H6) and the

Rohit Funde asked Oct 6, 2024

by Rohit Funde

7.0k points

1 answer

3 votes

60.5k views

A connection between IC50 and Michaelis-Menten constant by the Cheng-Prusoff equation Kᵢ=IC₅₀/1+[S]Kₘ where Kᵢ is the binding affinity of the inhibitor,IC₅₀ is the functional strength of the inhibitor,

Plog asked Oct 6, 2024

by Plog

8.6k points

1 answer

1 vote

55.5k views

During a titration involving 1.852 g of khp powder, the amount of naoh in a buret started at a reading of 3.56 ml. What is the amount of NaOH in moles?

Chris Wolf asked Oct 6, 2024

by Chris Wolf

8.6k points

1 answer

2 votes

29.8k views

An element in its ground state has the following electron configuration, 1s^2 2s^2 2p^6 3s^2. How many energy levels of the atom are completely filled? A) 1 B) 2 C) 3 D) 4

Ari asked Oct 6, 2024

by Ari

8.0k points

1 answer

3 votes

210k views

Two firms, gene's gloves and wally's wallets, have factories near a lake. Both firms use a chemical for tanning leather. Some of this chemical runs into the lake. Each year gene's gloves dumps 15,000 gallons

Sebastian Nowak asked Oct 6, 2024

by Sebastian Nowak

8.3k points

1 answer

0 votes

201k views

K(s)+Cr3+(aq)→Cr(s)+K+(aq) Express your answer as a chemical equation. Identify all of the phases in your answer.

Void Ray asked Oct 6, 2024

by Void Ray

8.4k points

1 answer

2 votes

218k views

True/false. molarity is the number of grams of solute dissolved per one liter of solution..

VoiceOfUnreason asked Oct 6, 2024

by VoiceOfUnreason

8.2k points

1 answer

2 votes

73.8k views

What fungus is used for Martian alcohol? a) Red Moss b) Green Mold c) Blue Lichen d) Purple Fungus

Anurag Deokar asked Oct 6, 2024

by Anurag Deokar

8.0k points

1 answer

5 votes

207k views

Calculate the ionic strength of 0.15 M solution of Fe₂(SO₄)₃

David Demetradze asked Oct 6, 2024

by David Demetradze

7.5k points

1 answer

2 votes

219k views

The following are properties of various elements. Drag each property into the correct box in order to identify the element as a metal or a nonmetal. 1. Element 1: - Gas at room temperature 2. Element 2:

Jason Rikard asked Oct 6, 2024

by Jason Rikard

7.8k points

1 answer

4 votes

122k views

Which particles have a mass of 1AMU each?

Zurechtweiser asked Oct 6, 2024

by Zurechtweiser

7.8k points

1 answer

3 votes

31.7k views

If a laxative manufacturer has 3.6x10^5 grams of Mg, how many grams of water must be used to have all of the Mg react to form Mg(OH)2? A) 3.6x10^5 grams of water B) 1.8x10^5 grams of water C) 7.2x10^5

Ivon asked Oct 6, 2024

by Ivon

8.5k points

1 answer

0 votes

146k views

20.0 ml of a 0.0985 M solution of sodium hydroxide is added to 18.0 ml of a 0.103 M solution of hydrochloric acid. What is the pH of the final solution? a. 1.98 b. 7.00 c. 1.42 d. 14.00

Stefano Siano asked Oct 6, 2024

by Stefano Siano

8.2k points

1 answer

4 votes

151k views

Between ICl and Br_2 which of the following would have the higher boiling point? A. ICl B. B_2 C. Both will have the same boiling point. D. It cannot be determined from the information given.

Aleclarson asked Oct 6, 2024

by Aleclarson

8.2k points

1 answer

5 votes

9.8k views

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