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3 years ago

What is an internal cost of driving a domestic car?

Chemistry

1 answer:

Nataly_w [17]3 years ago

3 0

Answer:

The correct option is: Cost of materials used in manufacture

Explanation:

There are two types of costs of an object: the internal costs and the external costs.

The internal cost of an object is the direct monetized cost. It refers to the cost involved in the <u>production or manufacturing of a given objec</u>t. Example: labor, <u>material required</u>, equipment, energy, and overhead expenses.

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Will mark branliest. Calculating percent yield: For the reaction Cu + 2AgNO3 → Cu(NO3)2 + 2 Ag, adding 127 grams of copper to lo

pishuonlain [190]

Percent yield = (Actual Yield/ Theoretical Yield) x 100

Given, Actual Yield of silver = 410 grams

Given, mass of copper = 127 g

Atomic mass of copper = 63.546 amu

Formula: Moles = mass / atomic mass

Moles of copper = 127 g/ 63.546 amu = 1.998 mol

Based on the given balanced chemical reaction, the molar ratio between Cu: Ag is 1:2

So 1.998 mol of copper should yield (2 mol Ag/ 1 mol Cu) x 1.998 mol of Cu = 3.996 mol

Calculated mol of Ag = 3.996 mol

Atomic mass of silver = 107.8682 amu

Mass of silver = moles x atomic mass = 3.996 mol x 107.8682 amu = 431 g

Based on the math, the theoretical yield = 431 g

Percent yield of silver = (410g/431g) x 100 = 95. 13%

The answer is 95. 13%

8 0

4 years ago

If 24.6 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 301 Kelvin and 1.01 atmosph

andreev551 [17]

Answer: 43.3 l

Explanation:

1) Chemical equation:
2 Li(s) + 2 H₂O (l) → 2LiOH(aq) + H₂ (g)

2) Mole ratios:

2 mol Li : 2 mol H₂O : 2 mol LiOH : 1 mol H₂

3) Number of moles of Li that react

n = mass in grams / atomic mass = 24.6g / 6.941 g/mol = 3.54 moles

4) Yield

Proportion:

2 mol Li / 1 mol H₂ = 3.54 mol Li/ x

⇒ x = 3.54 mol Li × 1 mol H / 2 mol Li = 1.77 mol H₂

4) Ideal gas equation

PV = nRT ⇒ V = nRT / P

V = 1.77 mol × 0.0821 [atm×l / (mol×K)] × 301 K / 1.01 atm = 43.3 l

V = 43.3 l ← answer

7 0

4 years ago

What is the meant by world pad?

Rama09 [41]

Answer:

WordPad (also referred to as its description name WordPad MFC Application) is the basic word processor that has been included with almost all versions of Microsoft Windows from Windows 95 on. It is more advanced than Microsoft Notepad, and simpler than Microsoft Word and Microsoft Works (last updated in 2007)

5 0

3 years ago

A 2.0 L container of oxygen had a pressure of 3.2 atm. What volume would be necessary to decrease the pressure to 1.0 atm?

MatroZZZ [7]

Answer:

V= 6.4 L

Explanation:

P1V1= P2V2

(3.2)(2)=(1)V2

V2= 6.4 L

8 0

2 years ago

Read 2 more answers

If a reaction mixture is initially 0.35 m in x, what is the concentration of x after 190 seconds? if a reaction mixture is initi

3241004551 [841]

According to the second-order rate constant formula:

K t = 1/[At] - 1/[Ao]

when k is the rate constant = 0.035 (given missing in your question)

and t is the time = 190 sec

Ao is the initial concentration of X = 0.35 m

by substitution:

0.035 * 190 sec = 1/[At] - 1/0.35

∴ [At] = 0.11 m

∴ the concentration after 190 sec = 0.11 m

8 0

3 years ago