All categories

3 years ago

The blades of a wind turbine are at rest until the movement of air causes the blades to spin.

Chemistry

1 answer:

Finger [1]3 years ago

8 0

Answer:

Explanation:

First there is no chemicals involved so cross out B and D. Wind turbines are made to create energy not to convert it so A is crossed out as well. The remaining answer is C.

You might be interested in

Robert leaves a chocolate bar in his car while attending school all day. When he goes to his car in the afternoon, the bar has c

attashe74 [19]

Substance change.
solid to a liquid
melting state when heat was applied.

3 0

3 years ago

Calculate the molarity of sodium ion in a solution made

Arada [10]

Answer:

0.1035 M

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Sodium chloride will furnish Sodium ions as:

$NaCl\rightarrow Na^{+}+Cl^-$

Given :

For Sodium chloride :

Molarity = 0.288 M

Volume = 3.58 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 3.58×10⁻³ L

Thus, moles of Sodium furnished by Sodium chloride is same the moles of Sodium chloride as shown below:

$Moles =0.288 \times {3.58\times 10^{-3}}\ moles$

Moles of sodium ions by sodium chloride = 0.00103104 moles

Sodium sulfate will furnish Sodium ions as:

$Na_2SO_4\rightarrow 2Na^{+}+SO_4^{2-}$

Given :

For Sodium sulfate :

Molarity = 0.001 M

Volume = 6.51 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 6.51 ×10⁻³ L

Thus, moles of Sodium furnished by Sodium sulfate is twice the moles of Sodium sulfate as shown below:

$Moles =2\times 0.001 \times {6.51\times 10^{-3}}\ moles$

Moles of sodium ions by Sodium sulfate = 0.00001302 moles

Total moles = 0.00103104 moles + 0.00001302 moles = 0.00104406 moles

Total volume = 3.58 ×10⁻³ L + 6.51 ×10⁻³ L = 10.09 ×10⁻³ L

Concentration of sodium ions is:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

$Molarity_{Na^+}=\frac{0.00104406}{10.09\times 10^{-3}}$

The final concentration of sodium anion = 0.1035 M

4 0

3 years ago

These are all chemistry questions please help

SpyIntel [72]

Answer:

cant read the questions...

Explanation:

4 0

3 years ago

Use complete sentences to differentiate between acids and bases on the basis of taste. Give an example of each type.

worty [1.4K]

Answer:

bases are sour in taste whereas acids are not.

Explanation:

hope this helps ✌️

5 0

2 years ago

Benzoyl chloride, C6H5COCl, reacts with water to form benzoic acid, C6H5COOH, and hydrochloric acid. This first-order reaction i

djyliett [7]

Answer: The time required for the conversion of benzoyl chloride to benzoic acid is 390 seconds.

Explanation:

The expression for the rate law of first order kinetics is given as:

$\ln \frac{N}{N_o}=e^{-kt}$ ......(1)

where,

$N_o$ = initial mass of isotope = 100 g

N = mass of the parent isotope left after the time = 100 - 25 = 75 g

t = time taken = 26 s

k = rate constant = ?

Putting values in above equation, we get:

$\ln \frac{75}{100}=e^{-k\times 26}\\\\k=0.011065s^{-1}$

Now, we need to find the time when 99 % of the reaction is complete. Using equation 1 again, we get:

$N_o$ = initial mass of isotope = 100 g

N = mass of the parent isotope left after the time = 100 - 99 = 1 g

t = time taken = ? s

k = rate constant = $0.011065s^{-1}$

Putting values in above equation, we get:

$\ln \frac{1}{100}=e^{-0.011065\times t}\\\\t=416s$

Time required for the conversion of benzoyl chloride to benzoic acid = 416 - 26 = 390 s

8 0

3 years ago