An independent variable is:

Chemistry

1 answer:

weqwewe [10]3 years ago

6 0

Answer: The variable that you change in an experiment

Explanation: It does not rely on any other factors that deal with the experiment

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On what information did Thomson base his hypothesis that atoms contain positive particles?

ElenaW [278]

Answer:

If you have any more questions text 3856026122

Explanation:

J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged soup

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3 years ago

How is a suspension different from a colloid?

Mashcka [7]

Answer:

Explanation:

Colloidal:

Colloid consist of the particles having size between 1 - 1000 nm i.e, 0.001- 1μm.

The particles in colloid can not be seen through naked eye.

It is homogeneous.

We can not separate the colloidal through the filtration. The pore size of filter paper is 2μm. However it can be separated through the ultra filtration. In ultra filtration the pore size is reduced by soaking the filter paper in gelatin and then in formaldehyde. This is only in case of when solid colloidal is present, if colloid is liquid , there is no solid particles present and ultra filtration can not be used in this case.

Suspension:

The particle size in suspension is greater than 1000 nm.
These particles can seen through naked eye.

It is heterogeneous.
The particles in suspension can be separated through the filtration.

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3 years ago

BaCl2(aq) + Na2CO3(aq) BaCO3(s) + NaCl(aq

Vitek1552 [10]

This is the equation balanced:

<span>BaCl2(aq) + Na2CO3(aq) = BaCO3(s) + 2 NaCl(aq)

Then the coefficient in front of Na Cl is 2.

Answer: 2
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4 years ago

Describe how a chemist should set up his or her stoichiometric calculation to predict the mass of CuSO4 that forms when a specif

DanielleElmas [232]

1) Calculate the number of moles of Cu SO4 . 5H20 by dividing the specified mass by the molar mass.

2) The ratio of production given by the equation is 1 mol of Cu SO4 . 5 H2O to 1 mol of Cu SO4=> 1:1, meaning that the number of moles of Cu SO4 produced is the same number of moles of Cu SO4.5H20 heated.

3) Finally mutiply the number of moles of Cu SO4 by its molar mass and there you have the mass of Cu SO4 produced.

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Which function allows a user to add another item to a list in Python? order() print() sort() append()

vovikov84 [41]

Answer:

Probably (print)

Explanation:

I think

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