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inysia [295]
2 years ago
5

Joaq...

Chemistry
1 answer:
MrRa [10]2 years ago
3 0

Answer:

all the statements are true of chemical changes

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What are the 4 different types of bonds and how are they formed?
miv72 [106K]

There are four types of chemical bonds essential for life to exist: Ionic Bonds, Covalent Bonds, Hydrogen Bonds, and van der Waals interactions. We need all of these different kinds of bonds to play various roles in biochemical interactions. These bonds vary in their strengths.

To play a variety of roles in biochemical interactions, we require all of these diverse sorts of linkages. The tensile strength of these linkages varies. In chemistry, we consider the range of strengths between ionic and covalent bonds to be overlapping. This indicates that in water, ionic bonds usually dissociate. As a result, we shall consider these bonds from strongest to weakest in the following order:

Covalent is followed by ionic, hydrogen, and van der Waals.

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8 0
1 year ago
22.99 on the element sodium means the combined numbers of electrons and protons?
Anika [276]

Answer:

The answer is 11 electron and 11 protons respectively

Explanation:

Since the sodium is in it neutral state, number of electron is the same as the number of proton, which is 11.

8 0
3 years ago
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A chemical bond results from the mutual attrac- tion of the nuclei for
aleksandrvk [35]

for what????? complete the question

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3 years ago
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Calculate the osmotic pressure of a solution containing 24.6g of glycerin in 250ml of solution at 298K
gavmur [86]
The formula to calculate osmotic pressure is 
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M = Molarity
R = Ideal Gas Constant
T = Temperature in Kelvin

So, 
24.6/.2254kg=109.139g /kg  >>>>> Molarity
109.139 x mols/92 g = 1.186 mols kg^-1
1.186 x 0.08134 x 298 K = 28.755 atm
<span>1.06852 x 0.08134 x 298K= 26.5 atm

The answer is 26.5</span>
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3 years ago
How would planting a variety of plants in a vacant (empty) lot help establish an ecosystem in that location?
vichka [17]

the plants would grow  and reproduce working together forming nutrients from their dropped  leaves / branches etc causing insects to come along and do the same  along with animals and a keystone species to form a revolving ecosystem continuing an energy moving process

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