3 years ago

How much does REAL carbon fiber cost ? lets say as big as a piece of paper

Chemistry

1 answer:

coldgirl [10]3 years ago

8 0

Answer:

Today, the average total production cost of “standard modulus” carbon fiber is in the range of $7-9 per pound.

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How many moles are there in 545g of <img src="https://tex.z-dn.net/?f=" id="TexFormula1" title="" alt="" align="absmiddle" class

Pachacha [2.7K]

answer: 3.40625 moles

Explanation: see the attached pics

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3 years ago

What is the volume in liters of hydrogen gas that would be produced by the reaction of 40.0 g of Al with excess HCl at STP accor

DaniilM [7]

The volume in liters of Hydrogen gas = 49.28 L

<h3>Further explanation </h3>

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products

Reaction

2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

mol Al :

$\tt mol=\dfrac{mass}{Ar}=\dfrac{40}{27}=1.481$

mol H₂ :

$\tt \dfrac{3}{2}\times 1.481=2.2$

At STP, 1 mol =22.4 L

so the volume of hydrogen :

$\tt 2.2 \times 22.4=49.28~L$

8 0

3 years ago

Read 2 more answers

How many grams of fluorine must be reacted with excess lithium iodide to produce 10.0 grams of lithium fluoride?

rewona [7]

Answer:
7.32 g of F₂

Solution:
The equation is as follow,

2 LiI + F₂ → 2 LiF + I₂

According to equation,

51.88 g (2 mole) of LiF is produced from = 37.99 g (1 mole) F₂
So,
10 g of LiF will be produced by = X g of F₂

Solving for X,
X = (10 g × 37.99 g) ÷ 51.88 g

X = 7.32 g of F₂

8 0

4 years ago

A simple definition of cells

Stolb23 [73]

Answer:

Cells are the basic structural and functional unit of life.

5 0

3 years ago

Whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive ma

miskamm [114]

Answer: Thomson

Explanation: It verified J. J. Thomson's work on the atomic structure.