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3 years ago

7

If sock type A is pulled first, sock type B second, and sock type C third, the fourth sock type must match one of A, B, or C.

1 answer:

alexandr1967 [171]3 years ago

5 0

Answer:

a

Explanation:

sock type a is first then other sock types

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A sample of gas is held at 100oc at a volume of 20 L.if the volume is increased to 40 L what is the new temperature of the gas i

ElenaW [278]

Answer:

470 °C

Explanation:

This looks like a case where we can use Charles’ Law:

$\dfrac{V_{1}}{T_{1}} =\dfrac{V_{2}}{T_{2}}$

Data:

V₁ = 20 L; T₁ = 100 °C

V₂ = 40 L; T₂ = ?

Calculations:

(a) Convert the temperature to kelvins

T₁ = (100 + 273.15) K = 373.15 K

(b) Calculate the new temperature

$\begin{array}{rcl}\dfrac{V_{1}}{T_{1}}& =&\dfrac{V_{2}}{T_{2}}\\\\ \dfrac{\text{20 L}}{\text{373.15 K}} &=&\dfrac{\text{40 L}}{T_{2}}\\\\{\text{15 000 K}} & = & 20T_{2}\\T_{2} & = &\dfrac{\text{15 000 K}}{20 }\\\\T_{2} & = & \textbf{750 K}\\\end{array}$

Note: The answer can have only two significant figures because that is all you gave for the volumes.

(c) Convert the temperature to Celsius

T₂ = (750 – 273.15) °C = 470 °C

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2 years ago

Acetylene gas, C2H2, releases large quantities of heat when it burns, making it ideal for welding applications. This gas is gene

Karo-lina-s [1.5K]

Answer:

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Explanation:

The computation of the number of kg need to ordered is shown below:

As we know that

$CaC_2 + 2H_2O \rightarrow Ca(OH)^2 + C_2H_2$

Now as we know that

1 mole of $C_2H_2$ generated from 1 mole of $CaC_2$

Now

26g of $C_2H_2$ generated from 64g of $CaC_2$

And,

26kg of $C_2H_2$ generated from

= $\frac{64g\times26Kg}{26g}$

= 64kg $CaC_2$

Hence, the number of kg that required for ordering the calcium carbide is 64 kg

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3 years ago

Electron configuration worksheet

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Answer:

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2 years ago

Heat is added to a chemical system. Which energy will increase?

dmitriy555 [2]

Answer:

the kinetic energy of the reactant molecules(C)

Explanation: i hope this is the correct answer if this is wrong or incorrect please let me know

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2 years ago

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"survival of the fittest" best means that an organism is

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The answer is: Survival of the form that will leave the most copies of itself in successive generations.

"Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory.

This is example of natural selection and adaptation.

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The environment is constantly changing and different alleles are favored.

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3 years ago