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yan [13]
3 years ago
5

Idk how to do this, if you know the answer plz explain

Chemistry
2 answers:
KatRina [158]3 years ago
7 0
The temperature is constant which makes it the independent variable
Sedbober [7]3 years ago
5 0
The temperature because it changes according to the heat that you put in
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How many molecules of water can fit in one teaspoon?
34kurt
About 5 millimeters which weighs about 5 grams. Hope this helps! ^-^

4 0
3 years ago
what is the order of decreasing bond length for a C-C bond composed of the following molecular orbitals?I. sp^3 - sp^3II. sp^2 -
skelet666 [1.2K]

Answer:

The decreasing order of bond length in the carbon - carbon bonds will be:

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

Explanation:

Bond length is defined as average distance between two nuclei of  bonded atoms in a molecule.Bond length is inversely  proportional to the number of bonds present between two atoms.

\text{Bond length} \propto \frac{1}{\text{Number of bonds}}...[1]

Bond energy is defied as amount of energy required to break apart the bond of 1 mole of molecule into their individual atom. Bond energy is directly proportional to the number of bonds present between two atoms.

\text{Bond Energy} \propto \text{Number of bonds}..[2]

From [1] and [2]:

\text{Bond length} \propto \frac{1}{\text{Bond energy}}

C-C: sp_3 hybridized

C=C: sp_2 hybridized

C\equiv C: sp hybridized

Extent of overlapping of orbitals in these hybridization;

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

Higher the overlapping of orbital more closer will be both atoms to each other and shorter will be the bond lenght.

So, the decreasing order of bond length in the carbon - carbon bonds will be:

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

8 0
2 years ago
Who were Watson and crick and what important contribution to DNA science did they make?
Leto [7]
 Watson and Crick first contribution to DNA science was they proposed the theory of the structure of DNA. Watson  and Crick's model DNA In the shape of a double helix.  they determined the structure of DNA, it is a double helix. DNA molecule that helped scientist better understand the structure of DNA. 
7 0
3 years ago
How many moles of pcl5 can be produced from 23.0 g of p4 (and excess cl2)?
Masja [62]
The balanced equation for the above reaction is as follows
P4 + 10Cl2 —> 4PCl5
P4 is the limiting reactant. Stoichiometry of P4 to PCl5 is 1:4
The mass of P4 reacted = 23.0 g
Number of P4 moles = 23.0 g/ 124 g/mol = 0.185 mol
According to the stoichiometry the number of PCl5 moles produced are 4 times the amount of P4 moles reacted
Therefore PCl5 moles = 0.185 x 4 = 0.74 mol
3 0
3 years ago
If an athlete weighs 133 lb and has 15.0 % body fat by weight, how many pounds of fat does the athlete's body contain?
vredina [299]
To get the weight of the body fat, you multiply the percentage of body fat (as a decimal) by the total body fat:
133x0.115=19.95
The athlete's body contains 19.95 pounds of fat. 
7 0
3 years ago
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