Recent questions in Chemistry

Question

What is the order of nucleophilic addition when working with a good nucleophile?

Arup Rakshit asked Dec 25, 2024

by Arup Rakshit

8.0k points

1 answer

4 votes

93.2k views

you have a drug solution at a concentration of 64 um. if your goal is to make a 100 ul dilution at a final concentration of 16 um, how much volume of your initial stock do you need?

Zion Ben Yacov asked Dec 25, 2024

by Zion Ben Yacov

7.6k points

1 answer

0 votes

88.7k views

I recently did this reaction according to a protocol: And although the product formation was monitored via NMR and IR techniques, I am unable to comprehend how the product3was formed. It should be an elimination

Mewc asked Dec 25, 2024

by Mewc

8.4k points

1 answer

1 vote

8.5k views

How has the increase in human population impacted earths resources?

Andy Dobedoe asked Dec 25, 2024

by Andy Dobedoe

8.4k points

1 answer

0 votes

60.4k views

Will the organic phase be the upper (top) or lower (bottom) layer when methylene chloride is mixed with water? (d=1.33 g/mL)

Rubndsouza asked Dec 25, 2024

by Rubndsouza

8.1k points

1 answer

0 votes

36.1k views

Soil nitrification refers to which process? A: conversion of NO to NO2 B: conversion of nitrogen oxides to nitric acid C: conversion of N2 to NO-2 D: conversion of NH4+ to NO3-

Brsbilgic asked Dec 25, 2024

by Brsbilgic

8.6k points

1 answer

5 votes

184k views

Why doesn't methane dissolve in water? A) Methane is highly polar B) Methane lacks a charge C) Water is repelled by methane D) Methane undergoes hydrolysis

Dylan Morley asked Dec 25, 2024

by Dylan Morley

8.7k points

1 answer

0 votes

45.2k views

What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction? V2O5(s) + 5Ca(l) = 2V(l) + 5CaO(s) A) 5.

Mukti asked Dec 25, 2024

by Mukti

7.4k points

1 answer

2 votes

98.9k views

The reaction that differs from the rest of the reactions given is (A) Formation of calcium oxide from limestone (B) Formation of aluminium from aluminium oxide (C) Formation of sodium carbonate from sodium

Tegan Snyder asked Dec 25, 2024

by Tegan Snyder

7.3k points

1 answer

5 votes

7.6k views

Question 1 of 10 Choose the one statement that is true of the noble gases. OA. They react with all other elements. OB. They have a full outer shell. C. They are solids at room temperature. OD. They are

Pfctgeorge asked Dec 25, 2024

by Pfctgeorge

8.0k points

1 answer

0 votes

108k views

Which of the compounds on this table can be used as a high energy compound for substrate-level phosphorylation?

Henklein asked Dec 25, 2024

by Henklein

8.5k points

1 answer

5 votes

222k views

upon heating, 517. ml of water was evaporated from 834. ml of 0.655 m c6h12o6(aq). what is the resulting concentration of this solution? g

James Andres asked Dec 25, 2024

by James Andres

8.4k points

1 answer

4 votes

16.4k views

A certain organic acid has a ka of 5.01 × 10−4. what is its pka?

Brian Hong asked Dec 25, 2024

by Brian Hong

8.2k points

1 answer

0 votes

79.7k views

Using the Ideal Gas Law, PV = nRT, where R = 0.0821 L atm/mol K, calculate the volume in liters of oxygen produced by the catalytic decomposition of 25.5 g potassium chlorate according to the following

Narayan Akhade asked Dec 25, 2024

by Narayan Akhade

8.0k points

1 answer

1 vote

221k views

What is the correct whole number coefficient for lead(II) nitrate? A. 0 B. 1 C. 2 D. 3

PhABC asked Dec 25, 2024

by PhABC

7.7k points

1 answer

0 votes

195k views

Calculate the molarity of a solution made by dissolving 3.0 g of calcium chloride (CaCl2) in enough water to make 300 mL of solution. A) 0.2 M B) 0.4 M C) 0.6 M D) 0.8 M

Kalee asked Dec 25, 2024

by Kalee

8.6k points

1 answer

4 votes

113k views

How many days does penicillin solution last in the refrigerator?

DZenBot asked Dec 25, 2024

by DZenBot

7.0k points

1 answer

3 votes

57.2k views

What is the key factor needed to solve all stoichiometry problems?

Anuja asked Dec 25, 2024

by Anuja

8.5k points

2 answers

1 vote

149k views

A group of 15 students are hard at work studying their chemistry on a Friday night when they decide to take a pizza break. One pizza containers 9 pieces and each students wants 3 pieces. How many pizzas

CruftyCraft asked Dec 25, 2024

by CruftyCraft

8.0k points

1 answer

4 votes

187k views

How long will it take a substance with a half-life of 20 years to decompose to 10% of the original substance? A. 40 years B. 60 years C. 80 years D. 100 years

Balwant asked Dec 25, 2024

by Balwant

8.5k points

1 answer

4 votes

174k views

Page:

« prev
1
...
34
35
36
37
38
39
40
...
1000
...
next »

Ask a Question

Recent questions in Chemistry

Other Questions