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I am Lyosha [343]
4 years ago
9

What is controlled variable in dry ice experiment

Chemistry
2 answers:
PtichkaEL [24]4 years ago
8 0
The controlled variable is the variable the you control, so if you are investigating the affect of changing the amount (mass) of CO₂, then mass is your variable.
xenn [34]4 years ago
4 0
Dry ice creates smoke like people use it for scary haunted houses and stuff 
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How is carbon the element used
patriot [66]
Carbon can be used in fuel
6 0
4 years ago
Bronze contains 90 to 95 percent copper and 5 to 10 percent tin. Because these percentages can vary, bronze is classified as
Gennadij [26K]
<span>Answer: a mixture.


</span><span>Justification:</span>
<span /><span>
</span><span>1) Pure substances have a definite chemical formula: the same kind of atoms with the same fixed ratios and chemical bonds. Therefore, the percents of each element do not varye.
</span>
<span /><span /><span>
2) Elements and compounds are pure substaces. For example, Fe, Mg, Ti, are elements, and CO₂, CO, H₂CO₃ are compounds. Each of them will have always the same kind of atoms, in the same ratio and with the same chemcial bonds. Therefore the percents of the elements do not varye.
</span><span />

<span>3) Mixtures are formed by the physical combination (not chemical bonds) of different elements or compounds in variable proportions. As indicated, this describes the material bronze, in virtue of the variation of its composition. Other examples of mixtures are solutions (like brines), air, ocean water, and milk: different brines, different oceans and different milk have different contents of elements or compounds.
</span><span>
</span>


8 0
4 years ago
Read 2 more answers
What is called the powerhouse of a cell because it breaks down nutrients to help make the major energy source of the cell?.
Lisa [10]
MITOCHONDRIA.
The powerhouse of a cell is Mitochondria, don’t you even forget this.
6 0
3 years ago
Last trivia hehe
loris [4]
Pluto
Explanation:
As it is dwarf lol lol to small what a normie like get bigger smh like why so small
3 0
3 years ago
Read 2 more answers
Identify the type of reaction and the products. AlP -&gt;
Harman [31]

Answer:

Decomposition and Al and P

they might be looking for thermal decompositioin as this one happens at 2000 degrees

Explanation:

3 0
3 years ago
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