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Lelechka [254]
3 years ago
14

Silicones can be oils or rubber-like materials depending on ________. Select one: A. the silicon-to-oxygen ratio B. the length o

f the chain and degree of cross-linking C. the percentage of carbon in the chain D. the oxidation state of silicon in the chain E. the percentage of sulfur in the chain
Chemistry
1 answer:
Luba_88 [7]3 years ago
6 0

Answer: B-- the length of the chain and degree of cross-linking.

Explanation: Silicones can be oils or rubber-like materials depending on ___the length of the chain and degree of cross-linking.____

Silicone rubber is an elastomer which is composed of silicone containing silicon together with carbon, hydrogen, and oxygen. silicone rubber can be found in a wide variety of products because of its ability to withstand very high temperatures and pressures. eg cooking and food storage products; clothing apparels , automotive devices etc   while

Silicone oil is a linear chain siloxane repeating units Si--0 with radical side group as such as methyl, phenyl etc  bonded to it. They are oils because of they are  viscose  and have ability to  repel. Silicone oils are mostly employed in medicine for surgical tools.

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Complete and balance the following neutralization reaction Ca(OH)2 + H2SO4
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Answer: Ca(OH)2 (aq) + H2SO4 (aq) ---------->  CaSO4(aq) + 2H2O(l)

Explanation:

Since this is a neutralization reaction, the end product would be salt and water. In this equation Calcium will displace hydrogen from the acid because it is more reactive, resulting in the formation of CaSO4 (salt), while the displaced H2 molecule combines with OH molecules to form water.

The equation of the reaction is thus;

Ca(OH)2 (aq) + H2SO4 (aq) ---------->  CaSO4(aq) + H2O(l), in other to balance it, we add ''2'' to the water molecule in the right hand side of the equation.

Balance equation is  

Ca(OH)2 (aq) + H2SO4 (aq) ---------->  CaSO4(aq) + 2H2O(l)

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3 years ago
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Answer:

Explanation:

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2 years ago
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ZanzabumX [31]

<u>Answer:</u> The acceleration of the object is 2m/s^2. If net force increases, acceleration will also increase and if mass increases, the acceleration will decrease.

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