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bija089 [108]
2 years ago
6

The law of definite proportions helps us explain why water will always        A. break down into gas when heated.   B. be releas

ed or used up in a chemical reaction.   C. be used as a solvent to dissolve other compounds.   D. consist of a particular proportion of hydrogen and oxygen.
Chemistry
2 answers:
NikAS [45]2 years ago
8 0
... liquid water are two different forms of the same chemical substance, water. A chemical substance is a form of matter that has constant chemical ...
defon2 years ago
6 0

The correct answer is:

D.  consist of a particular proportion of hydrogen and oxygen.


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OlgaM077 [116]

Answer:

Experiment Question, Independent & Dependent Variable, Null & Alternate Hypothesis

Explanation:

Experiment Question : Whether fine cloth coverage over chicken jars effect flies & their eggs in ambience ?

Independent Variable : The causal variable, ie cloth cover existence on the chicken jar

Dependent Variable : The resultant variable, ie presence of flies & their eggs near jar, meat

Null Hypothesis [H0] : Cloth cover on chicken jar doesn't effects flies' & eggs' presence around jar, chicken.

Alternate Hypothesis [H1] : Cloth cover on chicken jar effects flies' & eggs' presence around jar, chicken.

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The composition of perchloric acid (71.6%) and water boils at 203°c. Pure iron solution weights about 10g is placed in a beaker, hydrochloric acid and nitric acid mixtures are added and heated to dissolve. Add perchloric acid until it evaporate and produces white smoke.cool it down add water and dissolve the salt.

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3 years ago
why is it necessary to adjust the height of the graduated cylinder when measuring the volume of co2 (g) produced? group of answe
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3. The height of the graduated cylinder when measuring the volume of co2 (g) produced is adjusted to equalize the pressure in the graduated cylinder with the atmospheric pressure.

We discovered that when the water level within the graduated cylinder is higher than the water level outside, the gases inside the graduated cylinder have a lower pressure than the atmospheric pressure. It would then be possible to equalize pressure by changing the graduated cylinder's water level to match the water level outside.

Therefore last option or 3rd option is the correct choice.

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Explanation:

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3 years ago
Which Best Desribes The Relationship Between Earth Layers?
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