Why shampoo is a weak base?

Chemistry

1 answer:

SVEN [57.7K]3 years ago

5 0

Answer:

Shampoos are in fact, slightly acidic (around pH 5.5). ... (It also contains a buffer so that the pH remains constant but that's another story) We make shampoo acidic because, under acidic conditions, the scales on a hair follicle lie flat, making the hair feel smooth and look shiny.

Explanation:

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The specific heat of aluminum is 0.88 J/g°C. How many joules will it take to make the temperature of a 50. g nugget go up from 2

AlladinOne [14]

Answer:

2200J

Explanation:

Given parameters:

Specific heat of aluminum = 0.88J/g°C

Mass of nugget = 50g

Initial temperature = 20°C

Final temperature = 70°C

Unknown:

Quantity of heat required for the heating = ?

Solution:

To solve this problem, we use the expression below;

H = m c Δt

H is the quantity of heat

m is the mass

c is the specific heat capacity

Δt is the change in temperature

H = 50 x 0.88 x (70 - 20) = 2200J

3 0

3 years ago

find the total pressure of a gas that initially occupied 27 L at 32 degrees Celsius and 2.5 atm, if the final conditions are 12

yawa3891 [41]

Answer: Total pressure of the gas will be 0.716atm.

Explanation: We are given a gas having initial conditions as

V = 27L

T = 32°C = 305K

P = 2.5atm

As the gas remains same, number of moles of a gas will also be same for initial and final conditions. To calculate the number of moles, we use ideal gas equation, which is,

$PV=nRT$ .......(1)