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Vaselesa [24]
3 years ago
15

1.20×10−8s to nanoseconds

Chemistry
1 answer:
AveGali [126]3 years ago
7 0

Answer:

There are 12 nanoseconds in 1.2\times 10^{-8}\ s.

Explanation:

We need to convert 1.2\times 10^{-8}\ s to nanoseconds.

We know that,

1\ s=10^9\ ns

Now using unitary method to solve it such that,

1.2\times 10^{-8}\ s=1.2\times 10^{-8}\ \times 10^9\\\\=1.2\times 10\\\\=12\ ns

So, there are 12 nanoseconds in 1.2\times 10^{-8}\ s.

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The answer is selenium which is D
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A 57.9 g sample of glass is cooled by 27.0°C. How much heat does it release?
liberstina [14]

Explanation:

A 57.9 g sample of glass is cooled by 2.70'C how much heat does it release

1560

3 0
3 years ago
In the following reaction, how many grams of nitroglycerin C3H5(NO3)3 will decompose to give 25 grams of CO2?
gogolik [260]

4C₃H₅(NO₃)₃_{(l)} ------> 12CO₂_{(g)} + 6N₂_{(g)} +  10H₂O_{(g)}  +  O₂_{(g)}

mol of CO₂  =  \frac{mass}{molar mass}

                    =  \frac{25g}{44.01 g/mol}

mol ratio of  CO₂ :  C₃H₅(NO₃)₃

                    12    :     4

∴  if  mole of CO₂  =  0.568 mol

then   "       "   C₃H₅(NO₃)₃  =  \frac{0.568 mol}{12}  *  4

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∴ mass of nitroglycerin  =  mole  *  Mr

                                       =  0.189 mol  *  227.0995 g / mol

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8 0
3 years ago
During bromination using NBS, the addition product is not observed because the rate of addition is _______than the rate of the c
Alecsey [184]

Answer:

slower

Explanation:

NBS is used in place of Br2 during bromination because the use of Br2 tends to result in the formation of a large concentration of the addition product.  This is because, the Br2 interacts with the double bond to yield only the dibromide (addition product).

The usefulness of NBS lies in the fact that it provides a lower concentration of Br2, and such that the rate addition is slower than the chain propagation steps. Only the monobromination product is observed

The low concentration of Br2 allows the free-radical reaction to out-compete the alkene addition reaction.

3 0
3 years ago
For each pair of salts, determine which of the salts, if any, would be expected to be more soluble in acidic solution than in pu
gogolik [260]

Answer:

AgNO2

Explanation:

The question asks to know which of these two insoluble salts is expected to be more soluble in acidic solution than in pure water.

To answer this question specifically, we need to know if the anions contained in the insoluble salt is a conjugate of a weak acid or that of a weak base.

Generally, the solubility of insoluble salts that contain anions which are conjugates of weak acids increases in the presence of an acidic solution than in water. While, the solubility of insoluble salts that contain anions which are conjugates of strong acids decreases in the presence of an acidic solution.

Having said this, AgNO2 contains NO2 which is the conjugate base of the Trioxonitrate iii acid which is a weak acid. Hence, it is expected to be stronger in acidic solution than in water.

4 0
3 years ago
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