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zysi [14]
3 years ago
14

What’s the difference of dawling paper and offset paper?

Chemistry
1 answer:
Karolina [17]3 years ago
6 0
Dowling paper also known as the “dao ling paper," was originally produced by the United States Dowling (Dowling), which is a kind of more advanced paper. The wood is the raw material of Dowling paper. According to the paper whether have luster or not, it is divided into rough dowling paper and smooth dowling paper. The formal name of Dowling paper is glazed paper or glazed printing paper, which is a special paper for glazed printing and also suitable for letterpress printing. Glazed printing paper is suitable for printing and making Monochrome or polychromatic book covers, more advanced text and the insert or pictures (such as various medical journals - China social medical journal), all kinds of colorful illustrated, map paper, Commercial paper or public welfare propaganda, color trademark and all kinds of packaging paper and so on. The glazed printing paper technology is complex, so the requirement of paper quality of printing paper is high. Glazed printing paper is made by  bleached chemical pulp, bamboo pulp, rag and straw pulp and it is also needed to add some padding (Talcum powder, clay,) and mucilage (chemical agent such as surface sizing agent ). It is made on   the long wire paper machine, and calender , finally form paper into storage.<span>
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There are ________ σ bonds and ________ π bonds in h3c-ch2-ch=ch-ch2-c≡ch.
FrozenT [24]
The number of sigma and pi bonds are,

          Sigma Bonds  =  16

          Pi Bonds         =   3

Explanation:
                   Every first bond formed between two atoms is sigma. Pi bond is formed when already a sigma bond is there. While in case of Alkyne (triple Bond) there is one sigma and one pi bond already present, so the third bond is formed by second side-to-side overlap of orbitals, hence, a second pi bond is formed.
Below all black bonds are sigma bonds, while in alkene there is one pi bond and in alkyne there are two pi bonds.

6 0
3 years ago
What is the boiling point of water at sea level ??​
TEA [102]

Answer:

212 °F

Explanation:

4 0
3 years ago
Read 2 more answers
What is the mass, in grams, of a sample of 6.98 × 1024 atoms of magnesium (Mg)?
monitta
N=6.98*10²⁴
Nₐ=6.022*10²³ mol⁻¹

n(Mg)=N/Nₐ

m(Mg)=n(Mg)M(Mg)=M(Mg)N/Nₐ

m(Mg)=24.3g/mol*6.98*10²⁴/(6.022*10²³mol⁻¹)=281.7 g
5 0
3 years ago
A chemical plant produces ammonia using the following reaction at a very high temperature and pressure. Which design issue is mo
Lorico [155]

Answer:

D. The equipment needed to accommodate the high temperature and pressure will be expensive to produce.​

Explanation:

Hello!

In this case, for the considered reaction, it is clear it is an exothermic reaction because it produces energy; and therefore, the higher the temperature the more reactants are yielded as the reverse reaction is favored. Moreover, since the effect of pressure is verified as favoring the side with fewer moles; in this case the products side (2 moles of ammonia).

In such a way, the high pressure favors the formation of ammonia whereas the high temperature the formation of hydrogen and nitrogen and therefore, option A is ruled out. Since the high pressure shifts the reaction rightwards and the high temperature leftwards, we would not be able to know whether the reaction has ended or not because it will be a "go and come back" process, that is why B is also discarded. Now, since hydrogen and nitrogen would be the "wastes", we discard C because they are not toxic. That is why the most accurate answer would be D. because it is actually true that such equipment is quite expensive.

Best regards!

6 0
2 years ago
Complete the balanced dissociation equation Cs2CO3
MaRussiya [10]

The balanced dissociation equation for Cs₂CO₃ is:

Cs₂CO₃(aq) —> Cs⁺(aq) + CO₃²¯(aq)

A dissociation equation is an equation showing the available ions present in a solution.

To obtain the dissociation equation, the compound must be dissolved in water to produce an aqueous solution.

The dissociation equation for Cs₂CO₃ can be written as follow

Cs₂CO₃(aq) —> Cs⁺(aq) + CO₃²¯(aq)

Learn more about dissociation equation: brainly.com/question/1903354

3 0
2 years ago
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