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andrew-mc [135]

2 years ago

15

Pinky put her wet clothes inside the room for drying. But her mom told her to put it under the sun. Give reason why her mom told

her to put it out in the sun instead of indoors.

1 answer:

bulgar [2K]2 years ago

5 0

so it doesn't get smaller

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Explain preparation of alkanes C--C from industrial source for industrial preparation of alkane

Dmitrij [34]

Alkanes can be prepared from carboxylic acid via the removal of carbon dioxide. This process is known as decarboxylation. It produces alkane with a carbon atom lesser than that present in the carboxylic acid.

4 0

2 years ago

Which occurs at a larger a wavenumber

pav-90 [236]

Answer:

The C-O stretch of phenol

Explanation:

Electron delocalization causes the of the phenol to have partial double bond character, whereas the of the cyclohexanol is a pure single bond. Again, we know as the bond order or bond strength increases the absorption occurs at larger wave number. So, the stretch of the phenol occurs at larger wave number.

8 0

3 years ago

When a 7.00 g7.00 g sample of KBrKBr is dissolved in water in a calorimeter that has a total heat capacity of 2.72 kJ⋅K−1,2.72 k

algol13

Answer : The molar heat of solution of KBr is 19.9 kJ/mol

Explanation :

Mass of KBr = 7.00 g

Molar mass of KBr = 119 g/mole

Heat capacity = 2.72 kJ/K

Change in temperature = 0.430 K

First we have to calculate the moles of KBr.

$\text{ Moles of }KBr=\frac{\text{ Mass of }KBr}{\text{ Molar mass of }KBr}=\frac{7.00g}{119g/mole}=0.0588moles$

Now we have to calculate the heat of the reaction.

$q=c\times \Delta T$

where,

q = amount of heat = ?

$c$ = heat capacity = $2.72kJ/K$

$\Delta T$ = change in temperature = 0.430 K

Now put all the given values in the above formula, we get:

$q=2.72kJ/K\times 0.430K$

$q=1.17kJ$

Now we have to calculate the molar heat of solution of KBr.

$\text{Molar heat of solution of }KBr=\frac{q}{n}$

where,

n = number of moles of KBr

$\text{Molar heat of solution of }KBr=\frac{1.17kJ}{0.0588moles}=19.9kJ/mol$

Therefore, the molar heat of solution of KBr is 19.9 kJ/mol

4 0

4 years ago

How many moles are in 68.5g of KOH?

Dafna11 [192]

Answer: It has to be 56.10564

Explanation:1 grams KOH to mol = 0.01782 mol

10 grams KOH to mol = 0.17824 mol

20 grams KOH to mol = 0.35647 mol

30 grams KOH to mol = 0.53471 mol

40 grams KOH to mol = 0.71294 mol

50 grams KOH to mol = 0.89118 mol

100 grams KOH to mol = 1.78235 mol

200 grams KOH to mol = 3.5647

8 0

3 years ago

Read 2 more answers

Three blocks are shown: Three blocks are shown. Block A has mass 3 kilograms, length 6 centimeters, height 4 centimeters, and wi

dsp73

Answer:

Block A has the greatest density.

Explanation:

Three blocks are shown: Three blocks are shown.

Block A has mass 3 kilograms, length 6 centimeters, height 4 centimeters, and width 2 centimeters.

Block B has mass 1 kilograms, length 6 centimeters, height 2 centimeters, and width 4 centimeters.

Block C has mass 2 kilograms, length 2 centimeters, height 6 centimeters, and width 4 centimeters.

Which statement is correct?

- Block A has the greatest density.

- Block B has the greatest density.

- The density of Block A is equal to the density of Block B.

- The density of Block B is equal to the density of Block C

4 0

1 year ago