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frutty [35]
3 years ago
7

A good way to organize and record your results and observations is

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
5 0
It is a graph. It shows observations and then you record your results with any of the graph types.
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How many hydrogen grams can be obtained if
kipiarov [429]

hi im breanna

Answer:

The mole is simply a very large number that is used by chemists as a unit of measurement.

Explanation:

The mole is simply a very large number,  

6.022

×

10

23

, that has a special property. If I have  

6.022

×

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hydrogen atoms, I have a mass of 1 gram of hydrogen atoms . If I have  

6.022

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H

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molecules, I have a mass of 2 gram of hydrogen molecules. If I have  

6.022

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C

atoms, I have (approximately!) 12 grams.

The mole is thus the link between the micro world of atoms and molecules, and the macro world of grams and litres, the which we can easily measure by mass or volume. The masses for a mole of each element are given on the periodic table as the atomic weight. So, if have 12 g of  

C

, I know, fairly precisely, how many atoms of carbon I have. Given this quantity, I know how many molecules of  

O

2

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C

, which I could measure by mass or by volume.

5 0
3 years ago
Which of the following shows the correct order of the levels of classification form Largest to smallest
DerKrebs [107]
Could you put the answee choicesv
6 0
3 years ago
MARKING BRAINLIEST! please help asap, i need a and b, thank you
defon

The time required to reduce the concentration from 0.00757 M to 0.00180 M is equal to 1.52 × 10⁻⁴ s. The half-life period of the reaction is 9.98× 10⁻⁵s.

<h3>What is the rate of reaction?</h3>

The rate of reaction is described as the speed at which reactants are converted into products. A catalyst increases the rate of the reaction without going under any change in the chemical reaction.

Given the initial concentration of the reactant, C₀= 0.00757 M

The concentration of reactant after time t is C₁= 0.00180 M

The rate constant of the reaction, k = 37.9 M⁻¹s⁻¹

For the first-order reaction: C_t =C_0-kt

0.00180 = 0.00757 - (37.9) t

t =  1.52 × 10⁻⁴ s

The half-life period of the reaction: t_{\frac{1}{2} } =\frac{C_0}{2k}

t_{\frac{1}{2} } =\frac{0.00757}{2\times 37.9}

Half-life of the reaction = 9.98 × 10⁻⁵s

Learn more about the rate of reaction, here:

brainly.com/question/13571877

#SPJ1

5 0
1 year ago
LINKS WILL BE REPORTED PLEASE HELP
erastovalidia [21]

C. the denser the plants the better.

Answer:

C

7 0
3 years ago
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What is a mol in chemistry
Snowcat [4.5K]
Molecular weight it stands for molecular weight






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3 years ago
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