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Bond [772]
3 years ago
13

In what state of matter are the particles vibrating at high speeds?

Chemistry
1 answer:
OLEGan [10]3 years ago
3 0
The answer would be C
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Cracking the periodic table code why aren't the elements listed in alphabetical order answer key
finlep [7]

The elements in the periodice table are not listed in alphabetical order, because the arragement in rows (periods) and columns (groups or familes), in increasing order of atomic number (number of protons of the atoms) permits to explain similarities among the elements, trend in some properties, and even predict properties of unknown elements.


For example, the elements of the first group (family), called alkaline metals, all have 1 valence electron, have similar physical properties (ductibility, malleability, luster, thermal and electricity conductivity), react in similar way with water, show a trend in the atomic radii and in the ionization energy.


You can tell similar stories for other groups like, alkalyne earth metals, halogens and noble gases.


You can also tell trends in electroneativities, and atomic radii, for a row of elements, as per the order they are in the row.


So, the current array resulted very helpul for chemists to explain and predict the behavior and properties of the elements.

4 0
3 years ago
Read 2 more answers
Water is called compound why?​
qaws [65]

Answer: because it consists of more than one element, which are hydrogen and oxygen in a covalent bond.

5 0
2 years ago
Read 2 more answers
Consider the reaction cacn2 + 3 h2o → caco3 + 2 nh3 . how much caco3 is produced if 47.5 moles nh3 are produced? 1. 0.950 g 2. 9
zhannawk [14.2K]
The  CaCO3  produced  if  47.5   moles of  NH3  produced  is   calculated  as  follows

CaCN2  +3H2O  = CaCO3  + 2NH3

by  use   of  mole  ratio  between  CaCO3 to NH3  which  is 1:2  the  moles  of  CaCO3  is therefore =  47.5 /2= 23.75  moles

mass of CaCO3   is  therefore = moles  x  molar  mass
= 23.75 moles  x  100g/mol=  2375 grams   which  is approximate   2380  grams(answer 6)
8 0
3 years ago
Label B-L in the diagram below
Debora [2.8K]

Answer:

B. Polar Easterlies

C. Sub polar low

D. Prevailing westerlies

E. Sub tropical high

F. Tropical easterlies

G. Inter tropical convergence zone

H. Tropical easterlies

I. Sub tropical high

J. Prevailing westerlies

K. Sub polar low

L. Polar easterlies

Explanation:

8 0
2 years ago
The partial Lewis structure that follows is for a hydrocarbon molecule. In the full Lewis structure, each carbon atom satisfies
ahrayia [7]

Answer:

C-C> C=C> C\equiv C

So, 2 > 1 > 3

Explanation:

Carbon is a  non-metal and has 6 electrons. In the excited state, it contains 4 electrons in its outermost shell and so 4 electrons take place in covalent bond formation. In a molecule , 2 carbon atoms can be bound by a single bond, the double bond and by a triple bond. Since the bond length of C\equiv C is 120 pm, the bond length of C=C is 134 pm and the bond length of C-C is 154 pm. Thus in the given compound, C= C-C\equiv C , in which C= C is labeled as 1,  C-C is labeled as 2 and C\equiv C is labeled as 3. So the bond length of carbon-carbon bonds in the molecule, in decreasing order is 2 > 1  >3.

8 0
3 years ago
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