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2 years ago

Purpose of tanning in the leather industry is to

Chemistry

1 answer:

larisa [96]2 years ago

3 0

Answer:

d) Make it flexible

Step-by-step explanation:

Raw hides dry out to form a hard material that can decay with an offensive smell when they become wet.

Tanning converts the protein of the raw hide into a stable material that will stay flexible and not decompose when it gets wet.

a) is wrong. The purpose of tanning is to soften the leather.

b) is wrong. You smooth the leather manually with fine sandpaper.

c) is wrong. Tanning does not impart water resistance. It prevents the leather from putrefying when it does get wet.

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A saturated solution of baso4 has a concentration of 0.5mol/l. a 55ml sample is taken by you. what is the mass of baso4 in the s

SIZIF [17.4K]

Answer:

6.4 g BaSO₄

Explanation:

You have been given the molarity and the volume of the solution. To find the mass of the solution, you need to (1) find the moles BaSO₄ (via the molarity ratio) and then (2) convert moles BaSO₄ to grams BaSO₄ (via the molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 2 sig figs to reflect the sig figs of the given values.

Molarity (mol/L) = moles / volume (L)

(Step 1)

55 mL / 1,000 = 0.055 L

Molarity = moles / volume <----- Molarity ratio

0.5 (mol/L) = moles / 0.055 L <----- Insert values

0.0275 = moles <----- Multiply both sides by 0.055

(Step 2)

Molar Mass (BaSO₄): 137.33 g/mol + 32.065 g/mol + 4(15.998 g/mol)

Molar Mass (BaSO₄): 233.387 g/mol

0.0275 moles BaSO₄ 233.387 g
--------------------------------- x ------------------- = 6.4 g BaSO₄
1 mole

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1 year ago

Periodic table fill in the box :)

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Answer:

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Explanation:

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2 years ago

Which of the following questions is outside the scope of science?

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A. How religion and philosophy different
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2 years ago

When the pressure that a gas exerts on a sealed container changes from 1100 bar to 75.5 bar, the temperature changes from k to 2

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substituting the values in the equation
$\frac{1100 bar}{T} = \frac{75.5 bar}{298 K}$
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3 years ago

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Explanation:

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