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3 years ago

Carbon fiber is an example of a ( n )

Chemistry

1 answer:

N76 [4]3 years ago

7 0

Answer:

C extended structure

Explanation:

Carbon fibers or carbon fibres (alternatively CF, graphite fiber or graphite fibre) are fibers about 5 to 10 micrometers (0.00020–0.00039 in) in diameter and composed mostly of carbon atoms. Carbon fibers have several advantages including high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion. These properties have made carbon fiber very popular in aerospace, civil engineering, military, and motorsports, along with other competition sports. However, they are relatively expensive when compared with similar fibers, such as glass fibers or plastic fibers.

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Which elements make up a water molecule?

shutvik [7]

Answer:

Hydrogen and Oxygen

Explanation:

also it can be written as H2O

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3 years ago

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Calcium oxide or quicklime (CaO) is used in steelmaking, cement manufacture, and pollution control. It is prepared by the therma

Elena-2011 [213]

Answer:

The yearly release of $CO_2$ into the atmosphere is $6.73\times 10^{10} kg$ .

Explanation:

$CaCO_3(s)\rightarrow CaO(s) + CO_2(g)$

Annual production of CaO = $8.6\times 10^{10} kg=8.6\times 10^{13} g$

Moles of CaO :

$\frac{8.6\times 10^{13} g}{56 g/mol}=1.53\times 10^{12} moles$

According to reaction, 1 mole of CaO is produced along with 1 mole of carbon-dioxide.

Then along with $1.53\times 10^{12} moles$ of CaO moles of carbon-dioxide moles produced will be:

$\frac{1}{1}\times 1.53\times 10^{12} moles=1.53\times 10^{12} moles$ of carbon-dioxide

Mass of $1.53\times 10^{12}$ moles of carbon-dioxide:

$1.53\times 10^{12}mol\times 44 g/mol=6.73\times 10^{13} g =6.73\times 10^{10} kg$

The yearly release of $CO_2$ into the atmosphere is $6.73\times 10^{10} kg$ .

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3 years ago

Which is best illustrated by Watson and Crick's ball and stick model of dna

professor190 [17]

Answer:

Here is your Answer.......

Explanation:

The Watson and Crick's ball-and-stick model of DNA best illustrates the role of creativity in scientific discovery

3 0

3 years ago

4. What is the main hydrocarbon component of natural gas? A. ethane

KIM [24]

Answer:

Q.4) C. Methane

Q.7) A. False

Q.8) A. True

7 0

3 years ago

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a car jack with a mechanical advantage of 6 needs to produceand output force of 600 N to raise a car. what inout force is requir

poizon [28]

Answer:

$\large \boxed{\text{100 N}}$

Explanation:

The mechanical advantage (MA) is the ratio of the output force to the applied force.

$\begin{array}{rcl}MA &=& \dfrac{F_{\text{o}}}{F_{\text{a}}}\\\\6 &=& \dfrac{\text{600 N}}{F_{\text{a}}}\\\\6F_{\text{a}} & = &\text{600 N}\\\end{array}\\$

$\begin{array}{rcl}F_{\text{a}} & = & \dfrac{\text{600 N}}{6}\\\\& = & \textbf{100 N}\\\end{array}\\$

The input force required is 100 N.

4 0

4 years ago