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Chemistry Questions and Answers (Q&A)

CECHS
Answered: Jan 17, 2021
The number of neutrons and the mass number

1 Answer

385 views
I.Elizabeth
Answered: Feb 22, 2018
A. A combination reaction is when two compounds combine to form a single one. A displacement reaction would cause one element to push out or displace another element. And take its place. This...Read More

2 Answers

378 views
CECHS
Answered: Jan 17, 2021
2.91

1 Answer

374 views
Francesca
Answered: Jan 17, 2021
A chemical that turns pink in the absence of oxygen

1 Answer

372 views
Schouweilerd
Answered: Jan 17, 2021
H + Cl

Polar covalent bonds are formed between two nonmetal elements that do not share electrons evenly. In the case of Hydrogen and Chlorine, neither element is electronegative enough to...Read More

1 Answer

368 views
C. Bernthal, Teacher
Answered: Jun 18, 2019
Nostoc and Anabaena are two different types of colonies that may sometimes be interchanged because of their similar features. One of the most noticeable differences that you will see is their...Read More

1 Answer

365 views
Yttrium is one of the elements of the periodic table with an atomic number of 39 (2 – 8 – 18 – 9 – 2) which is the ground state. It is a transition metal; it belongs to...Read More

3 Answers

358 views
John Smith
Answered: Jan 17, 2021
0.183 M

Solving: Initial Final A X X -x B 0 2x = 0.322 x= 0.166 lnX/X-0.166 = kt= 8.75 10?-2 24.2 = 2.1175 X/X-0.166 = e2.1175 =8.31 X = 8.31X 1.38 7.31X = 1.38 X = 0.188M 24. For...Read More

1 Answer

358 views
Ochiengj
Answered: Jan 17, 2021

2.24 0C

Solving: 10.0 g 333 J/g = -25.0 g 4.18 J/g 0C (T 35) 0C, 104.5 T = 3657.5 3330, T = 3.13 0C

1 Answer

355 views
John Smith
Answered: Jan 17, 2021
CH2=CH-ĊH2

An allyl radical is the most stable (even more stable than a 3� radical) because the true structure of the allyl radical is a hybrid of two resonance structures. The...Read More

1 Answer

342 views
Ryanbecker
Answered: Jan 17, 2021
Dinitrogen trioxide

1 Answer

341 views
MaryNoblesHancock
Answered: Jan 17, 2021
C=80% H=20%
Carbon is 80%, Hydrogen is 20%
Carbon = 80% Hydrogen = 20%

1 Answer

339 views
I.Elizabeth
Answered: Feb 02, 2018
Molecules are arranged in specific patterns in all materials. This is the basic theory of matter. These atoms are arranged in the specific manner because of the interconnecting bonds between the...Read More

2 Answers

338 views
Marshall_Bailey
Answered: Jan 17, 2021
Protons and neutrons have most of the mass but occupy very little of the volume of the atom.

1 Answer

338 views
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